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The weather in Ionian Islands in September is hot. The average temperatures are between 22°C and 26°C.
You can expect a few rainy days in Ionian Islands 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 Ionian Islands in September 2025.
If you’re planning to visit Ionian Islands in the near future, we highly recommend that you review the 14 day weather forecast for Ionian Islands before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 13° / 10° | 4 | 27 | 0 | 90 mm | Ok | Ionian Islands in January |
| February | 14° / 10° | 5 | 24 | 0 | 74 mm | Good | Ionian Islands in February |
| March | 15° / 11° | 3 | 28 | 0 | 58 mm | Good | Ionian Islands in March |
| April | 18° / 14° | 2 | 28 | 0 | 33 mm | Good | Ionian Islands in April |
| May | 22° / 17° | 2 | 29 | 0 | 25 mm | Good | Ionian Islands in May |
| June | 26° / 21° | 1 | 29 | 0 | 14 mm | Perfect | Ionian Islands in June |
| July | 29° / 24° | 0 | 31 | 0 | 5 mm | Good | Ionian Islands in July |
| August | 30° / 25° | 0 | 31 | 0 | 3 mm | Good | Ionian Islands in August |
| September | 26° / 22° | 2 | 28 | 0 | 46 mm | Perfect | Ionian Islands in September |
| October | 22° / 19° | 4 | 27 | 0 | 83 mm | Good | Ionian Islands in October |
| November | 19° / 16° | 4 | 26 | 0 | 100 mm | Good | Ionian Islands in November |
| December | 15° / 12° | 4 | 27 | 0 | 82 mm | Good | Ionian Islands in December |
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