Click on a day for an hourly weather forecast
The weather in Kos in August is very hot. The average temperatures are between 25°C and 27°C, drinking water regularly is advisable.
As it is almost never rain during August in Kos the weather is perfect for hanging out outside and exploring all that Kos has to offer.
Our weather forecast can give you a great sense of what weather to expect in Kos in August 2025.
If you’re planning to visit Kos in the near future, we highly recommend that you review the 14 day weather forecast for Kos before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 14° / 12° | 8 | 23 | 0 | 195 mm | Ok | Kos in January |
| February | 15° / 13° | 6 | 22 | 0 | 129 mm | Good | Kos in February |
| March | 15° / 13° | 4 | 27 | 0 | 89 mm | Good | Kos in March |
| April | 18° / 16° | 2 | 28 | 0 | 48 mm | Good | Kos in April |
| May | 21° / 19° | 2 | 29 | 0 | 36 mm | Good | Kos in May |
| June | 24° / 22° | 1 | 29 | 0 | 20 mm | Perfect | Kos in June |
| July | 26° / 24° | 0 | 31 | 0 | 3 mm | Perfect | Kos in July |
| August | 27° / 25° | 0 | 31 | 0 | 2 mm | Perfect | Kos in August |
| September | 25° / 23° | 1 | 29 | 0 | 30 mm | Perfect | Kos in September |
| October | 22° / 20° | 4 | 27 | 0 | 92 mm | Good | Kos in October |
| November | 19° / 17° | 4 | 26 | 0 | 116 mm | Good | Kos in November |
| December | 16° / 14° | 7 | 24 | 0 | 176 mm | Ok | Kos in December |