
Updated Nov 13, 2026 10:59 AM EST · By Emma Jackob
The best time to visit Greece is late May to mid June, or September to early October. Athens averages highs of 74 to 86 F in those weeks, the islands are open, and you skip July and August, when highs pass 90 F and crowds peak. Orthodox Easter falls on 2 May in 2027.
Late spring and early fall win: warm enough for the beach, cool enough for the Acropolis, and quieter than high summer. Here's each month, using the National Observatory of Athens averages for central Athens.
| Month | Average high in Athens | Rain in Athens | What's happening | Our verdict |
|---|---|---|---|---|
| January | 55 F (12.9 C) | 45 mm, 13 days | Quiet; many island hotels closed | Athens only |
| February | 56 F (13.6 C) | 48 mm, 13 days | Cool and quiet | Athens only |
| March | 61 F (16.0 C) | 43 mm, 11 days | Independence Day on 25 March | Good for Athens |
| April | 69 F (20.3 C) | 28 mm, 10 days | Mild; islands still waking up | Good for the mainland |
| May | 78 F (25.3 C) | 17 mm, 7 days | Easter on 2 May 2027; island season starts late in the month | Great from the last week |
| June | 86 F (29.8 C) | 10 mm, 5 days | Islands open, long days, crowds building | Best, first half |
| July | 91 F (32.6 C) | 4 mm, 2 days | Heat waves, meltemi winds, peak crowds | Hot and busy |
| August | 90 F (32.3 C) | 5 mm, 2 days | 15 August holiday rush; strongest winds | Hardest month to go |
| September | 84 F (28.9 C) | 12 mm, 3 days | Hot early on, crowds thin out | Best |
| October | 74 F (23.1 C) | 48 mm, 9 days | Mild; island services thin out late in the month | Great to mid month |
| November | 65 F (18.6 C) | 51 mm, 11 days | Rain returns; free Acropolis Sundays start | Athens and Crete |
| December | 58 F (14.7 C) | 67 mm, 13 days | Wettest month in Athens | Athens only |
These are 1961 to 1990 averages, the most recent long-term table the National Observatory of Athens publishes, and recent summers have run hotter. Check the Greek weather service (emy.gr) for forecasts before you book.
Our advice: if you can pick only one window, take the first two weeks of September. The islands are still fully open, Athens still averages 84 F, and the August crowds have gone home.
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Go to the islands between late May and early October. Many island hotels, shops and beach clubs close for winter and reopen in late May, according to To Vima. Ferries run all year on the main routes, but with fewer sailings outside summer.
One traveler on the Rick Steves forum who has gone to Greece every October since 2010 says shops and tavernas stay open for locals then, and recommends a car on Crete because buses run less often. That's one person's experience, but it matches what we'd expect from the season.
The meltemi is a strong northerly summer wind across the Aegean, at its strongest in July and August. The National Observatory of Athens station on Tinos averages 17 days with gusts of 50 km/h or more in July and 19 in August. Summer 2025 had 61 such days from June to August, the most in 17 years.
When it blows hard, ferries stop. On 14 August 2026, a sailing ban kept ships in port at Rafina and Lavrio, and several Cyclades services from Piraeus were canceled, Proto Thema reported.
Our advice: in July and August, don't plan a ferry for the day before your flight home. Leave a free day, or take the last island hop by plane.
Athens averages a high of 91 F (32.6 C) in July and 90 F (32.3 C) in August, and heat waves push well past that. On 8 and 9 July 2025, the Ministry of Culture closed the Acropolis from 1 to 5 p.m. as temperatures neared 104 F (40 C), iefimerida reported.
In summer the Acropolis opens at 8 a.m. Book the first timed slot, carry water, and save the afternoon for a museum or the beach.
July and August are the peak. Greece had 7.47 million foreign arrivals in August 2025 alone, out of nearly 26 million from January to August, according to Bank of Greece data reported by GTP. Two Greek fees also rise in the busy months.
| Fee | Busy season | Quieter season | Off season |
|---|---|---|---|
| Cruise fee, Santorini and Mykonos, per passenger | €20, June to September | €12, April, May and October | €4, November to March |
| Climate fee, 3-star hotel, per room per night | €5, April to October | €5, April to October | €1.50, November to March |
| Climate fee, 5-star hotel, per room per night | €15, April to October | €15, April to October | €4, November to March |
The climate resilience fee is set by Greek law and paid at your hotel; the cruise fee is charged per passenger at each port. Fees change, so confirm with your hotel or cruise line before you travel.
Santorini feels the cruise crowds most. It averaged 7,000 to 8,000 cruise passengers a day, and up to 15,000, on an island of about 25,000 people, Afar reported in 2024. If Santorini is on your list, go in late May or late September and stay at least one night, so you have the island early and late in the day.
A few holidays change what's open and how busy ferries get. Build your dates around them.
Winter suits Athens, not the islands. Athens averages highs of 55 to 58 F (12.9 to 14.7 C) from December to February, with December the wettest month at 67 mm. From November to March the Acropolis closes at 5 p.m., and it's free on the first and third Sunday of each month.
Hotels cost you less in fees too: the climate fee drops to €1.50 a night at a 3-star hotel. Crete and Rhodes are the best island picks for a winter trip, with year-round services.
US citizens don't need a visa for stays under 90 days, according to the US State Department, which recommends six months of passport validity remaining. Greece is in the Schengen area, so your first arrival in Europe now includes the Entry/Exit System's fingerprint and photo check, running since April 2026.
Check your passport's expiry date before you book, not after. The State Department and the Greek embassy update entry rules, so look again a few weeks before you fly. Flights from the US land at Athens International Airport (ATH), and schedules change by season, so check flight times on the airline's website or app for your dates.
Related: How long a US passport takes · New York to Athens flights
About this page
Written and fact-checked by the Flyingscanner team, last updated 13 November 2026. The facts in this post were checked on 13 November 2026. Airline fees and rules change, so confirm the details for your own trip with the airline before you pay. About Flyingscanner