Weather in Ionian Islands for September 2025
Until now, September 2025 in Ionian Islands is slightly cooler than the historical average by -1.2 °C.
Expect cooler weather in the next days in Ionian Islands with the forecast suggesting a temperature of 24.1 °C, lower than the historical average.
In general, the average temperature in Ionian Islands at the beginning of September is 27 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.7 °C by the end of September.
Ionian Islands in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 83.3 mm.
Is September a good time to visit Ionian Islands? check out the best time to travel to Ionian Islands page.
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Ionian Islands Weather September
What’s the Weather Like in Ionian Islands This September?
Temperatures trend during September in Ionian Islands
September weather in Ionian Islands day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 27° /22° | 0.2 mm | 7 | |
| 2 Sept. | Sunny | 27° /22° | 2.8 mm | 7 | |
| 3 Sept. | Sunny | 27° /23° | 0.1 mm | 7 | |
| 4 Sept. | Sunny | 27° /22° | 3.9 mm | 6 | |
| 5 Sept. | Sunny | 27° /22° | 0.2 mm | 7 | |
| 6 Sept. |  Patchy rain possible | 27° /22° | 7.1 mm | 6 | |
| 7 Sept. | Sunny | 27° /22° | 0.8 mm | 7 | |
| 8 Sept. | Sunny | 27° /22° | 0.1 mm | 7 | |
| 9 Sept. |  Moderate or heavy rain shower | 27° /21° | 5.8 mm | 6 | |
| 10 Sept. | Sunny | 26° /21° | 6.4 mm | 6 | |
| 11 Sept. | Patchy rain possible | 26° /22° | 1.3 mm | 6 | |
| 12 Sept. | Sunny | 26° /21° | 2.4 mm | 6 | |
| 13 Sept. | Sunny | 26° /21° | 4 mm | 7 | |
| 14 Sept. | Sunny | 26° /21° | 0.7 mm | 6 | |
| 15 Sept. | Sunny | 26° /20° | 1.7 mm | 7 | |
| 16 Sept. | Sunny | 26° /23° | 0 mm | 1.6 | |
| 17 Sept. | Sunny | 26° /23° | 0 mm | 1.5 | |
| 18 Sept. | Sunny | 26° /23° | 0 mm | 1.6 | |
| 19 Sept. | Sunny | 25° /22° | 0 mm | 1.5 | |
| 20 Sept. | Sunny | 25° /22° | 0 mm | 1.8 | |
| 21 Sept. | Sunny | 25° /22° | 0 mm | 6 | |
| 22 Sept. | Sunny | 25° /22° | 0 mm | 6 | |
| 23 Sept. | Sunny | 25° /22° | 0 mm | 6 | |
| 24 Sept. | Patchy rain possible | 25° /21° | 1.4 mm | 5 | |
| 25 Sept. | Patchy rain possible | 24° /22° | 0.4 mm | 5 | |
| 26 Sept. | Patchy rain possible | 22° /19° | 0.3 mm | 5 | |
| 27 Sept. | Sunny | 21° /18° | 0 mm | 5 | |
| 28 Sept. | Sunny | 21° /18° | 0 mm | 5 | |
| 29 Sept. | Patchy rain possible | 22° /19° | 1 mm | 5 | |
| 30 Sept. |  Heavy rain at times | 24° /20° | 1.4 mm | 6 | |
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Ionian Islands weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Sunny | Sunny | Sunny |
| Temperatures | 28°/24° | 25°/21° | 22°/18° |
| Rainfall | 32 mm | 83 mm | 130 mm |
| Wind | 15.2 km/h | 15.7 km/h | 14.1 km/h |
| Humidity | 65% | 64% | 65% |
| Rainy days | 7 days | 19 days | 21 days |
| Dry days | 24 days | 11 days | 10 days |
Planning a trip to Ionian Islands? Discover the best time to visit
Ionian Islands in September - FAQ
Ionian Islands water temperatures in September
The average water temperature of the Mediterranean Sea near Ionian Islands in September is 23.1 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in Ionian Islands in September?
- The average water temperature in Ionian Islands in September is 23.1 °C.
- Can you swim in Ionian Islands in September?
- Comfortably warm for most people. Sensitive swimmers might prefer a light rash-guard, but wetsuits are rarely needed.
What to pack to Ionian Islands in September?
As you prepare for your trip to Ionian Islands in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Ionian Islands, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Ionian Islands
UV exposure in Ionian Islands during September
Quick links
Where is Ionian Islands?Get accurate weather forecasts for Ionian Islands, located at latitude 39.624 and longitude 19.92. Stay updated with localized weather information tailored for Ionian Islands.