Weather in Greece for September 2025
So far, September 2025 in Greece is slightly warmer than the historical average by 1 °C.
Expect cooler weather in the next days in Greece with the forecast suggesting a temperature of 27.8 °C, lower than the historical average.
In general, the average temperature in Greece at the beginning of September is 30.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 27.7 °C by the end of September.
With an average of 4 rainy days, Greece experiences minimal rainfall in September.
Is September a good time to visit Greece? check out the best time to travel to Greece page.
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Greece Weather September
What’s the Weather Like in Greece This September?
Temperatures trend during September in Greece
September weather in Greece day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 32° /21° | 0 mm | 8 | |
| 2 Sept. |  Partly cloudy | 32° /22° | 0 mm | 8 | |
| 3 Sept. | Sunny | 31° /22° | 0.3 mm | 8 | |
| 4 Sept. | Sunny | 31° /20° | 0.1 mm | 7 | |
| 5 Sept. | Partly cloudy | 29° /20° | 7.3 mm | 7 | |
| 6 Sept. | Sunny | 30° /20° | 4.1 mm | 7 | |
| 7 Sept. | Sunny | 29° /20° | 0.1 mm | 7 | |
| 8 Sept. | Sunny | 28° /19° | 0 mm | 7 | |
| 9 Sept. | Sunny | 29° /19° | 0.6 mm | 7 | |
| 10 Sept. | Sunny | 29° /20° | 0.4 mm | 7 | |
| 11 Sept. | Sunny | 30° /20° | 0.6 mm | 7 | |
| 12 Sept. | Partly cloudy | 30° /20° | 0.1 mm | 7 | |
| 13 Sept. | Sunny | 30° /19° | 0 mm | 7 | |
| 14 Sept. | Sunny | 30° /20° | 0 mm | 7 | |
| 15 Sept. | Sunny | 30° /20° | 0 mm | 8 | |
| 16 Sept. | Sunny | 31° /21° | 0 mm | 1.7 | |
| 17 Sept. | Sunny | 31° /21° | 0 mm | 1.7 | |
| 18 Sept. | Sunny | 25° /19° | 0 mm | 1.6 | |
| 19 Sept. | Sunny | 25° /18° | 0 mm | 1.6 | |
| 20 Sept. | Sunny | 25° /18° | 0 mm | 2 | |
| 21 Sept. | Sunny | 27° /18° | 0 mm | 6 | |
| 22 Sept. | Sunny | 29° /18° | 0 mm | 6 | |
| 23 Sept. | Sunny | 28° /19° | 0 mm | 6 | |
| 24 Sept. | Sunny | 28° /19° | 0 mm | 6 | |
| 25 Sept. | Sunny | 30° /19° | 0 mm | 6 | |
| 26 Sept. | Sunny | 28° /18° | 0 mm | 6 | |
| 27 Sept. | Sunny | 27° /18° | 0 mm | 6 | |
| 28 Sept. | Sunny | 28° /20° | 0 mm | 6 | |
| 29 Sept. |  Patchy rain possible | 27° /19° | 0.2 mm | 5 | |
| 30 Sept. | Sunny | 26° /17° | 0 mm | 7 | |
| Next | |||||
Greece weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Sunny | Sunny | Sunny |
| Temperatures | 34°/23° | 29°/20° | 23°/15° |
| Rainfall | 17 mm | 30 mm | 22 mm |
| Wind | 20.4 km/h | 18.5 km/h | 18.4 km/h |
| Humidity | 39% | 49% | 57% |
| Rainy days | 5 days | 4 days | 5 days |
| Dry days | 26 days | 26 days | 26 days |
Planning a trip to Greece? Discover the best time to visit
Guide for Greece in September
In September, Greece experiences pleasant weather with warm temperatures and plenty of sunshine. At the beginning of the month, the weather in Greece is still quite hot, especially in popular tourist destinations such as Athens, Santorini, and Mykonos.
The average temperature in Athens at the start of September is around 28°, while the islands may experience slightly higher temperatures, reaching around 30°.
As the month progresses, the weather begins to transition towards autumn, with slightly cooler temperatures and a refreshing breeze. By the end of September, the average temperature in Athens drops to around 25°, providing comfortable conditions for outdoor activities and sightseeing.
The islands also experience milder temperatures, with an average of around 26° towards the end of the month.
Overall, September is an excellent time to visit Greece, as the weather is still warm enough for beach activities and swimming, yet not as scorching hot as the peak summer months.
Additionally, the sea temperatures remain inviting, making it ideal for enjoying the beautiful beaches and crystal-clear waters.
Greece in September - FAQ
Greece water temperatures in September
The average water temperature of the Mediterranean Sea near Greece in September is 24 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in Greece in September?
- The average water temperature in Greece in September is 24 °C.
- Can you swim in Greece in September?
- Ideal conditions for families and casual swimmers. You can stay in for long swims or reef explorations with no thermal protection required.
What to pack to Greece in September?
As you prepare for your trip to Greece 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 Greece, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Footwear
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
September rainfall patterns in Greece
UV exposure in Greece during September
Quick links
Where is Greece?Get accurate weather forecasts for Greece, located at latitude 37.984 and longitude 23.728. Stay updated with localized weather information tailored for Greece.