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Athens gets more sunshine than almost any other European capital.
That sounds like an unqualified selling point until you're standing on the Acropolis at 2 PM in August, the marble reflecting 38°C of heat back at you, with no shade for another 200 meters in any direction. Sunshine is one thing. What that sunshine does to you at different times of year is another matter entirely.
This guide breaks down Athens weather by month with practical detail — not just temperature averages, but what each month actually feels like for a visitor walking the streets, climbing to sites, eating outdoors, and deciding what to pack. Because the difference between visiting Athens in May versus August isn't just 8 degrees on a thermometer — it's the difference between a comfortable trip and an endurance test.
For country-wide weather patterns including the islands, see Greece Weather by Month.
For broader trip timing guidance, see Best Time to Travel to Greece.
January
Temperature: 6–13°C (43–55°F)
Rainfall: 50–60 mm across 10–12 rainy days
Sea temperature: 16°C (too cold for swimming)
Daylight: ~10 hours
Sunshine: 4–5 hours daily average
January is Athens at its quietest. The city belongs to locals — no cruise ships, no tour groups at the Acropolis, no lines at restaurants. Temperatures are mild by Northern European standards: you'll need a jacket and layers, but you're unlikely to face anything close to a New York or London winter. Snow in central Athens happens roughly once every 5–10 years and melts within hours.
Rain comes in periodic bursts — overcast days with showers rather than all-day downpours. Between the rain, you get clear, bright winter days with excellent visibility that make the Acropolis views some of the sharpest all year.
What to wear: Warm jacket, layers, waterproof shoes. An umbrella is essential.
Sightseeing impact: Museums are uncrowded and indoor attractions shine. Outdoor sites are comfortable temperature-wise but check forecasts for rain days.
Crowds and costs: Rock-bottom. Hotels run 40–60% below summer rates. Restaurants and cafes are local-only.
Best for: Museum lovers, budget travelers, anyone who wants Athens without any tourist infrastructure. Combine with Thessaloniki for a winter mainland trip.
February
Temperature: 7–14°C (45–57°F)
Rainfall: 40–50 mm across 8–10 rainy days
Sea temperature: 15°C
Daylight: ~11 hours
Sunshine: 5–6 hours daily average
February is marginally warmer than January and slightly drier — you'll notice longer daylight and the first hints of spring in the city's parks and lemon trees. The Carnival season (Apokries) brings street celebrations, parades, and festive energy, particularly in the final weeks before Lent.
Athens starts to feel like it's waking up from its winter pause. Some outdoor cafes begin setting up terrace seating on warmer afternoons. The almond trees bloom in the National Garden.
What to wear: Same as January — warm layers, waterproof jacket, umbrella.
Sightseeing impact: Comfortable for outdoor sites on dry days. The Acropolis is essentially empty of tourists.
Crowds and costs: Still very low. One of the cheapest months to visit.
Best for: Carnival festivities, budget travel, combining with a winter Greece itinerary.
March
Temperature: 9–17°C (48–63°F)
Rainfall: 40–50 mm across 8–10 rainy days
Sea temperature: 15°C
Daylight: ~12 hours
Sunshine: 6–7 hours daily average
March is the transition month. Some days feel properly spring-like — warm sunshine, blue skies, comfortable t-shirt weather in the afternoon. Other days revert to winter rain and jacket conditions. The unpredictability is the defining feature.
By late March, the city's orange trees are in bloom, filling the streets of Plaka with scent. Orthodox Easter sometimes falls in March (date varies annually), transforming the city with processions, midnight services, and celebratory feasts.
What to wear: Layers you can add and remove. Light jacket for evenings and rainy days. Sunglasses for the bright days.
Sightseeing impact: Good for outdoor sites — comfortable temperatures and manageable crowds. Rain interrupts occasionally.
Crowds and costs: Starting to pick up slightly. Still well below summer levels. Good hotel deals remain.
Best for: Travelers who don't mind weather variability in exchange for low crowds and good prices. Orthodox Easter if it falls in March.
April
Temperature: 12–21°C (54–70°F)
Rainfall: 25–30 mm across 6–8 rainy days
Sea temperature: 17°C (still cool for swimming)
Daylight: ~13.5 hours
Sunshine: 8–9 hours daily average
April is when Athens transforms. Rainfall drops sharply, temperatures climb into the comfortable 18–22°C range by mid-month, and the city is genuinely beautiful — wildflowers on the ancient sites, long golden evenings, cafe culture in full swing.
This is one of the best months for sightseeing. You can walk the Acropolis, the Ancient Agora, and the Plaka neighborhoods comfortably at any time of day — no heat management needed. Early April can still throw an occasional rainy day, but by mid-to-late April, consecutive sunny days become the norm.
Orthodox Easter frequently falls in April and is the most important celebration in the Greek calendar. If your visit coincides with it, you'll experience midnight church services, fireworks, and the Sunday lamb roast — an unforgettable cultural moment.
What to wear: Light layers. T-shirt during the day, light jacket for evenings. Occasional rain gear early in the month.
Sightseeing impact: Excellent. Comfortable temperatures all day. Sites are pleasantly uncrowded on weekdays.
Crowds and costs: Moderate. Shoulder-season pricing — 20–30% below summer peaks. Accommodation is readily available.
Best for: Sightseeing-focused visitors, history enthusiasts, photography (spring light is exceptional).
May
Temperature: 17–26°C (63–79°F)
Rainfall: 15–20 mm across 4–6 rainy days
Sea temperature: 19–20°C (brave swimmers can enjoy it)
Daylight: ~14.5 hours
Sunshine: 10–11 hours daily average
May is many locals' and repeat visitors' pick for the single best month to visit Athens. Warm, sunny, long days — the kind of weather that makes outdoor dining at 9 PM feel natural. Rain is rare. Temperatures are warm without being oppressive. The Athenian Riviera beaches start filling up on weekends.
Everything is open and operating at full capacity: ferry schedules to the islands are running, outdoor cinemas have started their summer season, and the rooftop bars with Acropolis views are serving cocktails at sunset. But the July–August crush hasn't started yet.
Midday temperatures can touch 28–30°C on warm days, particularly late May — warm but manageable for outdoor sightseeing with a hat and water.
What to wear: Summer clothes. Sunscreen and a hat for daytime sightseeing. A light layer for evening (it cools to 17–19°C after dark).
Sightseeing impact: Excellent to perfect. Early morning visits are comfortable but not yet necessary for heat management.
Crowds and costs: Growing but not overwhelming. Late May sees the first wave of summer tourists. Prices are 10–20% below peak.
Best for: The best overall month for Athens. Warm weather, manageable crowds, good prices, everything open.
June
Temperature: 22–31°C (72–88°F)
Rainfall: 5–10 mm across 2–3 rainy days
Sea temperature: 22–23°C (comfortable swimming)
Daylight: ~15 hours
Sunshine: 12+ hours daily average
June splits into two halves. Early June (1st–15th) is effectively a warm extension of May — beautiful, not too hot, excellent for sightseeing. Late June (16th–30th) is the beginning of real summer heat, with regular days above 33°C and the first need for heat-management strategies at outdoor sites.
Rain is essentially nonexistent — a few drops, maybe, once or twice the entire month. The Athenian Riviera is in full summer mode: beach bars, swimming, sunset drinks along the coast from Glyfada to Vouliagmeni.
What to wear: Full summer. Sunscreen is non-negotiable. Hat and sunglasses for all outdoor sightseeing. Light, breathable fabrics.
Sightseeing impact: Good in early June, more challenging late June. Begin shifting outdoor site visits to morning (before 10 AM) or late afternoon (after 4 PM) by mid-month.
Crowds and costs: Summer season in effect. Prices at or near peak. Advance booking for hotels becomes important.
Best for: Beach and sightseeing combination. Early June in particular offers an ideal balance.
July
Temperature: 25–34°C (77–93°F), with frequent spikes to 38–40°C
Rainfall: Essentially zero (1–3 mm for the entire month)
Sea temperature: 25°C
Daylight: ~15 hours
Sunshine: 12+ hours daily
July is hot. Not "warm and pleasant" hot — genuinely, physically demanding hot. Athens is a concrete-heavy city in a natural basin that traps heat, and on days when the thermometer hits 38–40°C, the Acropolis and other shadeless archaeological sites become uncomfortable to dangerous at midday.
This is why many Athenians leave the city in July, heading to the islands or mountains. The tourists who replace them fill the Plaka and Monastiraki areas but often underestimate the heat's impact on sightseeing capacity.
That said: July evenings are spectacular. Temperatures drop to 25–27°C after sunset, and the city comes alive — outdoor cinemas, rooftop bars, taverna dining under stars. The Athens and Epidaurus Festival brings world-class performances to ancient theaters, including the Odeon of Herodes Atticus below the Acropolis.
What to wear: Lightest possible clothing. High-SPF sunscreen. Hat. Carry water constantly. Comfortable walking shoes that breathe.
Sightseeing impact: Midday outdoor sightseeing is inadvisable. Strict early-morning (8–10 AM) or late-afternoon (5–7 PM) schedule for the Acropolis and outdoor sites. Museums and indoor attractions become your midday refuge.
Crowds and costs: Peak everything. Highest prices, biggest crowds, longest lines at the Acropolis.
Best for: Night culture, festivals, combining a short Athens stay with island time. Not ideal as a primary sightseeing visit.
August
Temperature: 25–35°C (77–95°F), frequent spikes to 38–42°C
Rainfall: Essentially zero
Sea temperature: 26°C (warmest of the year)
Daylight: ~14 hours
Sunshine: 12+ hours daily
August is July but hotter, and the city feels it. Athens empties of locals — many businesses close for a 1–2 week summer break in mid-August, particularly around the Assumption of the Virgin Mary (August 15), Greece's most important summer holiday. The tourists who remain often describe mid-August Athens as a ghost town with pockets of tourist activity.
The heat in August 2023 and 2024 brought multiple days above 42°C and temporary closures of outdoor archaeological sites including the Acropolis. Climate change is making extreme August heat events more frequent and more severe.
What to wear: Same as July. Hydration is critical — drink 3+ liters of water daily.
Sightseeing impact: The most challenging month for outdoor sightseeing. Many experienced travelers avoid Athens in August entirely, heading straight to the islands where sea breezes provide relief.
Crowds and costs: Peak pricing but an odd mix — Athens feels less crowded than July because Greeks are on vacation, but tourist sites remain busy.
Best for: If your schedule forces an August visit, spend minimal time in Athens and maximize island time. Early morning Acropolis visits only.
September
Temperature: 22–31°C (72–88°F), cooling to 19–27°C by late month
Rainfall: 10–15 mm across 2–4 rainy days
Sea temperature: 25°C (still perfect for swimming)
Daylight: ~12.5 hours
Sunshine: 10–11 hours daily
September is the comeback month. The crushing heat breaks — sometimes dramatically, with a first rain shower that locals greet with relief. Early September still feels like summer (30°C+ days are common), but by mid-to-late September, temperatures settle into the 24–28°C range that's ideal for sightseeing.
Athenians return from vacation, the city regains its local energy, and the tourist crowds thin week by week. The sea is still warm enough for excellent swimming along the Riviera. Late September light — warm, golden, angled — is arguably the most beautiful of the year for photography.
What to wear: Summer clothes through mid-September. Light layers for evenings by late September. One light rain jacket for the occasional shower.
Sightseeing impact: Excellent. Comfortable temperatures for all-day outdoor exploration by mid-month. No heat management needed.
Crowds and costs: Declining from peak. Late September is significantly quieter and cheaper than August. Hotels drop 15–25% from peak.
Best for: The best combination of warm weather, swimmable seas, declining crowds, and falling prices. Rival to May as Athens' best month.
October
Temperature: 16–24°C (61–75°F)
Rainfall: 50–60 mm across 6–8 rainy days
Sea temperature: 23°C (still swimmable)
Daylight: ~11.5 hours
Sunshine: 7–8 hours daily
October is Athens' hidden gem. Temperatures are perfect for sightseeing — warm enough for t-shirts during the day, cool enough for comfortable walking. Rain returns but intermittently — you might get 2–3 rainy days spread across the month, with long sunny stretches between them. Many travelers are surprised to find that the sea is still 23°C and perfectly swimmable into mid-October.
The Acropolis without summer crowds, warm-but-comfortable temperatures, and shoulder-season hotel prices make October arguably the smartest month to plan an Athens-focused trip. Combine with a late-season island visit — Crete, Rhodes, and Naxos are still warm and operational through October.
What to wear: Light layers. T-shirt plus light jacket. Rain jacket for occasional showers. Comfortable walking shoes.
Sightseeing impact: Ideal. Walk any site at any time of day comfortably. Museums are uncrowded.
Crowds and costs: Low to moderate. Hotels are 20–40% below peak. Flights are at their cheapest.
Best for: Sightseeing-focused travelers, budget-conscious visitors, couples, anyone who wants Athens at its most comfortable.
November
Temperature: 12–18°C (54–64°F)
Rainfall: 55–70 mm across 8–10 rainy days
Sea temperature: 20°C (cool but still possible for the brave)
Daylight: ~10 hours
Sunshine: 5–6 hours daily
November is autumn arriving properly. Temperatures drop noticeably from October, rain becomes more frequent, and the last traces of summer disappear. The city transitions to its winter rhythm — indoor dining replaces terrace culture, and the streets empty after dark by 10 PM instead of midnight.
But November Athens has its own charm. The ancient sites look dramatic under moody autumn skies. The National Archaeological Museum, Benaki Museum, and Museum of Cycladic Art are at their most enjoyable when you're not rushing through them to get back to the beach. Restaurant prices drop, and you eat where locals eat because there aren't enough tourists to sustain tourist-trap establishments.
What to wear: Warm layers, waterproof jacket, umbrella. Evenings require a proper jacket.
Sightseeing impact: Good for sites on dry days. Rain can disrupt outdoor plans 2–3 days per week. Plan museum days as backup.
Crowds and costs: Very low. Some of the year's best hotel rates.
Best for: Museum-focused trips, budget travel, combining with Thessaloniki or Nafplio.
December
Temperature: 8–14°C (46–57°F)
Rainfall: 55–70 mm across 10–12 rainy days
Sea temperature: 17°C
Daylight: ~9.5 hours
Sunshine: 4–5 hours daily
December in Athens is mild winter — think London temperatures with slightly more sunshine and far less grey. Days average 12–14°C, which is jacket weather but not miserable. Rain is the most frequent of any month, but it comes in bursts rather than all-day drizzle.
Athens' Christmas celebrations have grown significantly in recent years. Syntagma Square hosts a large Christmas tree and holiday market. The Stavros Niarchos Foundation Cultural Center runs a major festive program. New Year's Eve brings fireworks over the Acropolis — one of the most scenic midnight celebrations in Europe.
What to wear: Warm jacket, scarf, umbrella. Layers for variable temperatures.
Sightseeing impact: Outdoor sites are manageable on dry days. Short daylight hours limit afternoon sightseeing. Museums are your primary focus.
Crowds and costs: Very low outside the Christmas/New Year holiday week, which sees a brief spike. Otherwise, among the cheapest months to visit.
Best for: Christmas/New Year in Athens, budget travel, combining with a winter mainland Greece itinerary.
Quick-reference weather table
Month | Avg High | Avg Low | Rain (mm) | Rain Days | Sea Temp | Rating
Jan | 13°C / 55°F | 6°C / 43°F | 55 | 11 | 16°C | ★★☆☆☆
Feb | 14°C / 57°F | 7°C / 45°F | 45 | 9 | 15°C | ★★☆☆☆
Mar | 17°C / 63°F | 9°C / 48°F | 45 | 9 | 15°C | ★★★☆☆
Apr | 21°C / 70°F | 12°C / 54°F | 28 | 7 | 17°C | ★★★★☆
May | 26°C / 79°F | 17°C / 63°F | 18 | 5 | 20°C | ★★★★★
Jun | 31°C / 88°F | 22°C / 72°F | 8 | 2 | 23°C | ★★★★☆
Jul | 34°C / 93°F | 25°C / 77°F | 2 | 1 | 25°C | ★★★☆☆
Aug | 35°C / 95°F | 25°C / 77°F | 2 | 1 | 26°C | ★★☆☆☆
Sep | 31°C / 88°F | 22°C / 72°F | 12 | 3 | 25°C | ★★★★★
Oct | 24°C / 75°F | 16°C / 61°F | 55 | 7 | 23°C | ★★★★★
Nov | 18°C / 64°F | 12°C / 54°F | 60 | 9 | 20°C | ★★★☆☆
Dec | 14°C / 57°F | 8°C / 46°F | 65 | 11 | 17°C | ★★☆☆☆
★★★★★ = Ideal | ★★★★ = Very good | ★★★ = Good with caveats | ★★ = Manageable | ★ = Not recommended
What to pack for Athens by season
Spring (March–May): Layers are key. Light jacket, t-shirts, one warmer option for cool evenings. Sunscreen from April onward. Umbrella in March and early April.
Summer (June–August): Lightest clothing you own. High-SPF sunscreen. Hat — non-negotiable for site visits. Refillable water bottle. Sunglasses. Comfortable breathable walking shoes. One light layer for air-conditioned museums and restaurants.
Autumn (September–November): Similar to spring but in reverse. Start with summer clothes in September, add layers through November. Rain jacket from October.
Winter (December–February): Warm jacket, scarf, waterproof shoes, umbrella. Nothing extreme — you're not preparing for a Northern European winter. Athens rarely drops below 5°C.
FAQs about Athens weather
What is the best month to visit Athens for weather?
May and October are the two best months. May offers warm temperatures (17–26°C), long days, minimal rain, and everything open for the season. October offers comfortable sightseeing temperatures (16–24°C), still-swimmable seas, and significantly lower crowds and prices.
How hot does Athens get in summer?
Very hot. July and August regularly hit 35–40°C, with occasional spikes above 42°C. The Acropolis and outdoor sites have no shade and can be dangerously hot at midday. Limit outdoor sightseeing to early morning and late afternoon in peak summer.
Does it rain a lot in Athens?
Athens gets about 400 mm of rain per year — less than London, Paris, or New York. Almost all rain falls between October and March. June through September is essentially bone dry. Rain comes in periodic bursts rather than all-day drizzle.
Can you swim in Athens in October?
Yes. The sea temperature along the Athenian Riviera averages 23°C in October — comfortable for swimming, especially in early-to-mid October. The beaches at Glyfada, Vouliagmeni, and along the coast to Cape Sounion are excellent.
Is Athens worth visiting in winter?
Yes, with adjusted expectations. The museums are world-class and uncrowded, the food scene is year-round, and the mild temperatures (8–15°C) make comfortable walking days between rain showers. Hotels are 40–60% cheaper than summer. Skip the islands and focus on Athens, Thessaloniki, and the mainland.
What should I wear to the Acropolis?
Comfortable walking shoes with good grip (the marble is slippery). In summer: hat, sunscreen, light breathable clothing, and carry at least 1 liter of water. In spring and autumn: layers you can adjust. In winter: warm jacket and rain protection. There is virtually no shade at the Acropolis in any season.
Plan your Athens trip
- 3 Days in Athens — detailed Athens itinerary
- Greece Weather by Month — country-wide weather guide
- Best Time to Travel to Greece — timing your trip
- Flights to Greece from USA — getting to Athens
- Cheap Flights to Greece — best deals
Whenever you decide to go, compare flight deals to Athens across airlines on Kiwi.com for the best available fares.
- Is Greece Expensive? — cost breakdown
- How to Plan a Trip to Greece — complete planning guide
- Visiting Greece in Winter — winter travel guide
- Best Cities to Visit in Greece — mainland destinations
- Islands near Athens
Written by
Athens-born engineer · Coordinates a 5-expert Greek team · 50+ years combined field experience
I write every article on this site drawing on real, first-hand expertise — mine and that of four colleagues who live and work across Greece daily: a Peloponnese tour operator, a transfer specialist across Athens, Mykonos & Santorini, a Cretan hotel owner, and a Northern Greece hotel supplier. Nothing here comes from a single visit or desk research.
Informed by 5 Greek experts
Every destination we cover has been visited and vetted by at least one team member — not for a review, but as part of their daily work in Greek tourism.