The climate in Grevená during September can be summarized as warm and reasonably dry.
September is in the fall / autumn in Grevená and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 25°C (77°F), whilst at night 12°C (53°F) is normal.
| Daytime temperature | 25.2°C 77.3°F |
|---|---|
| Nightly temperature | 11.9°C 53.3°F |
| Average temperature | 18.5°C 65.3°F |
| Daily sunshine | 9.8 hrs |
| Avg rainfall | 40 mm 1.6 ins |
| Rainy days | 6 days |
| Sea temperature | 24.1°C 75.4°F |
| Humidity | 60% |
| Windspeed | 3.6kph 2 mph |
On average September is the 4th driest month of the year in Grevená with around 40mm 1.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.8 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Grevená in September 2025.
Best places to visit in September
| Hottest month: | July | 29.1°C 84.4°F |
|---|---|---|
| Driest month: | August | 27mm 1.1ins |
| Sunniest month: | July | 12.7hrs |
| Coldest month: | January | 6.2°C 43.2°F |
| Wettest month: | December | 104mm 4.1ins |