The climate in Adria during September can be summarized as warm and reasonably dry.
September is in the fall / autumn in Adria and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 24°C (76°F), whilst at night 15°C (58°F) is normal.
| Daytime temperature | 24.2°C 75.6°F |
|---|---|
| Nightly temperature | 14.6°C 58.3°F |
| Average temperature | 19.4°C 66.9°F |
| Daily sunshine | 7.2 hrs |
| Avg rainfall | 65 mm 2.6 ins |
| Rainy days | 9 days |
| Sea temperature | 23.2°C 73.8°F |
| Humidity | 74% |
| Windspeed | 4.3kph 3 mph |
On average September is the 5th wettest month of the year in Adria with around 65mm 2.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.2 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 Adria in September 2025.
Best places to visit in September
| Hottest month: | July | 27.8°C 82°F |
|---|---|---|
| Driest month: | February | 53mm 2.1ins |
| Sunniest month: | July | 10.3hrs |
| Coldest month: | January | 5.5°C 41.9°F |
| Wettest month: | November | 86mm 3.4ins |