Greece
Kos weather by month
Kos is warmest in August, with average highs of 30°C, and coolest in January at 15°C. The sea ranges from about 18°C to 27°C, warmest in August.
- WarmestAugust30°C average high
- CoolestJanuary15°C average high
- Warmest seaAugust27°C on average
- From Dublin≈ 4h 15mdirect, estimated
Kos through the year
Beach weather (highs of 25°C or more and fewer than seven rainy days) is most likely June to September. January is the wettest month, with rain on about 12 days.
Month by month
| Month | High | Low | Sea | Rainy days | Rain | Sky | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 15° | 11° | 19° | 12 | 172 mm | Often cloudy | 0% |
| February | 15° | 11° | 18° | 9 | 104 mm | Some cloud | 0% |
| March | 16° | 12° | 18° | 7 | 66 mm | Some cloud | 0% |
| April | 19° | 14° | 18° | 4 | 32 mm | Some cloud | 2% |
| May | 23° | 18° | 20° | 3 | 16 mm | Some cloud | 18% |
| June | 27° | 22° | 23° | 1 | 6 mm | Mostly clear | 71% |
| July | 29° | 24° | 26° | 0 | 0 mm | Mostly clear | 98% |
| August | 30° | 25° | 27° | 0 | 1 mm | Mostly clear | 100% |
| September | 27° | 23° | 26° | 1 | 16 mm | Mostly clear | 85% |
| October | 23° | 19° | 25° | 4 | 47 mm | Mostly clear | 21% |
| November | 20° | 16° | 23° | 7 | 103 mm | Some cloud | 1% |
| December | 16° | 13° | 21° | 10 | 160 mm | Often cloudy | 0% |
Shaded rows: beach weather (June to September). Rainy day = 2 mm or more. Sky = average cloud cover. How we measure
Flying time
Estimated from the distance for a direct flight. Real schedules vary, and many long-haul trips need a connection.
- From Dublin≈ 4h 15m
- From Cork≈ 4h 30m
- From Belfast≈ 4h 30m
- From London≈ 3h 45m
- From Manchester≈ 4h
- From Glasgow≈ 4h 15m
Similar weather
Air: ERA5 reanalysis via Open-Meteo, 2011–2025, for the grid point at 36.89, 27.29 (6 m). Sea: Copernicus Marine analysis via Open-Meteo, 2023–2025. Averages describe past weather, not a forecast.