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The weather in Kalymnos in September is very hot. The average temperatures are between 23°C and 25°C, drinking water regularly is advisable.
You can expect a few rainy days in Kalymnos during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in Kalymnos in September 2025.
If you’re planning to visit Kalymnos in the near future, we highly recommend that you review the 14 day weather forecast for Kalymnos before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 15° / 12° | 10 | 21 | 0 | 72 mm | Ok | Kalymnos in January |
| February | 15° / 12° | 7 | 21 | 0 | 46 mm | Good | Kalymnos in February |
| March | 16° / 13° | 5 | 26 | 0 | 27 mm | Good | Kalymnos in March |
| April | 17° / 15° | 2 | 28 | 0 | 13 mm | Good | Kalymnos in April |
| May | 21° / 19° | 1 | 30 | 0 | 5 mm | Good | Kalymnos in May |
| June | 24° / 22° | 1 | 29 | 0 | 2 mm | Perfect | Kalymnos in June |
| July | 26° / 24° | 0 | 31 | 0 | 0 mm | Perfect | Kalymnos in July |
| August | 27° / 25° | 0 | 31 | 0 | 0 mm | Perfect | Kalymnos in August |
| September | 25° / 23° | 1 | 29 | 0 | 6 mm | Perfect | Kalymnos in September |
| October | 22° / 20° | 3 | 28 | 0 | 23 mm | Good | Kalymnos in October |
| November | 19° / 17° | 4 | 26 | 0 | 37 mm | Good | Kalymnos in November |
| December | 16° / 14° | 8 | 23 | 0 | 63 mm | Ok | Kalymnos in December |