The best months to visit Mykonos are April, May, June, September and October, when average highs sit in the comfortable low-to-high twenties and rain is rare — May reaches 22.3 °C with just 4 rain days, while September hits 26 °C with only 1 rain day and 11.7 hours of sunshine a day. July and August are peak season, with the hottest highs of 28.5 °C and 28.2 °C drawing school-holiday crowds and packed streets. Winter is the quiet low season, cool and breezy with 11 rain days in January and far fewer visitors around Mykonos Town.
Best months AprilMayJuneSeptemberOctober
Mykonos month by month
Average highs and lows (°C), 2016–2025. Highlighted bars are the best months.
| Month | High | Low | Rain days | Sun / day |
|---|---|---|---|---|
| January | 14.1 °C | 10.6 °C | 11 | 7.4 h |
| February | 14.6 °C | 11 °C | 7 | 8.7 h |
| March | 16 °C | 12 °C | 7 | 10 h |
| April | 18.8 °C | 14.2 °C | 4 | 11.4 h |
| May | 22.3 °C | 17.3 °C | 4 | 12.5 h |
| June | 26.5 °C | 21.7 °C | 2 | 13.8 h |
| July | 28.5 °C | 24.1 °C | 0 | 13.7 h |
| August | 28.2 °C | 24.2 °C | 1 | 12.9 h |
| September | 26 °C | 22.1 °C | 1 | 11.7 h |
| October | 22.2 °C | 18.7 °C | 4 | 9.9 h |
| November | 19.1 °C | 15.5 °C | 7 | 8.8 h |
| December | 15.7 °C | 12.4 °C | 10 | 7.6 h |
How the months are picked.A month qualifies when its average high sits in the comfortable 20–28 °C band (scored down towards 9 °C and 37 °C), rain days are few and sunshine hours are high — at least 78 % of the city's best-scoring month. July and August are then set aside as peak season (school-holiday crowds and prices) whenever at least three other months qualify; where summer is the only comfortable window they stay. Figures are ten-year averages (2016-01-01 to 2025-12-31) from ERA5 reanalysis data via Open-Meteo (CC BY 4.0) for the city centre coordinates.
When to go, and what to expect
Spring (Mar–May)
Ideal for walking, beaches and calm town evenings before the rush.
Summer (Jun–Aug)
June is the sweet spot; July and August suit party-goers who accept crowds.
Autumn (Sep–Nov)
September and October offer warm seas and space — arguably the finest window.
Winter (Dec–Feb)
For a slow, local off-season stay rather than beaches and nightlife.
Notable events
- Spring (usually April or early May)
- Greek Orthodox Easter celebrations
- June to September
- Mykonos summer beach and club season
- August (15th)
- Feast of the Dormition of the Virgin (Assumption)
- Autumn (September–October)
- Grape harvest and autumn wine celebrations
Frequently asked
Is Mykonos too hot in August?
August is hot, with an average high of 28.2 °C and just 1 rain day. It is bearable thanks to the breeze, but it coincides with peak crowds — consider June or September for similar warmth with more space.
What is the rainiest month in Mykonos?
January is the wettest, with 11 rain days, followed by December with 10. The driest stretch is high summer, with 0 rain days in July and 1 in August.
Is winter worth visiting Mykonos?
Winter is quiet and cool — January highs reach 14.1 °C with 11 rain days and about 7.4 hours of sunshine a day. It suits travellers wanting a peaceful, local feel, but many beach and nightlife venues close.
Know when to go? Now decide where to stay — our Mykonos area guide →
Areas of Mykonos
Best time to visit near here
Sources
- Open-Meteo historical weather API — monthly climate normals, 2016–2025 (CC BY 4.0)
- ERA5 reanalysis (ECMWF / Copernicus) — the underlying temperature, precipitation and sunshine data
- ReasonStay methodology — how the best months are computed and checked
An independent guide to Mykonos — honest, verified, no invented data. Climate figures: ERA5 via Open-Meteo, 2016–2025 averages; the best months are computed from them, not opinion.