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Best time to visit Kos: month by month
Short answer
May, June and September are the best months, with highs of about 23-28°C, a warm sea and fewer crowds. July and August are hot (about 31°C), busy and windy with the meltemi. Many hotels close from November to April.
Month by month
| Month | High | Low | Rainy days | Crowds |
|---|---|---|---|---|
| Jan | 15°C | 11°C | 15 | low |
| Feb | 15°C | 10°C | 7 | low |
| Mar | 15°C | 10°C | 9 | low |
| Apr | 19°C | 14°C | 5 | low |
| May | 23°C | 17°C | 4 | medium |
| Jun | 27°C | 21°C | 1 | high |
| Jul | 31°C | 24°C | 0 | very high |
| Aug | 31°C | 25°C | 1 | very high |
| Sep | 28°C | 23°C | 1 | high |
| Oct | 24°C | 19°C | 2 | medium |
| Nov | 21°C | 16°C | 12 | low |
| Dec | 17°C | 14°C | 10 | low |
Temperatures and rainy days: Copernicus ERA5 averages, 2021–2023. Crowd levels are our estimate.
Season by season
Spring (Mar–May)
About 15°C in March rising to 23°C in May; green landscapes and quiet beaches, sea still cool until late May.
Summer (Jun–Aug)
Hot and dry, 27-31°C by day and 21-25°C at night, almost no rain; the meltemi wind blows in July and August.
Autumn (Sep–Nov)
About 28°C in September and 24°C in October with the warmest sea; November brings rain and closures.
Winter (Dec–Feb)
Mild, about 15-17°C by day and 10-14°C at night, with frequent rain; most tourist businesses are closed.
Events worth planning around
- Greek Orthodox Easter, March, April or May (dates vary)
- Hippocratia Festival, summer cultural events in Kos Town
- Feast of the Assumption (Panagia), 15 August
- Ochi Day, 28 October
When to avoid
Mid-July to late August is the busiest and most expensive time, with strong winds on some days. From November to April, many hotels, restaurants and boat trips stop.
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Common questions
What is the best month to visit Kos?
June or September for warm sea and fewer crowds; May is lovely but the sea is cooler.
Is Kos windy?
Yes, in July and August the meltemi wind can blow strongly, which cools the heat but roughens the sea.
Is Kos open in winter?
Kos Town stays alive, but most hotels and beach businesses close from November to April.