Tolmin Weather in September
What's the weather like in Tolmin (Slovenia) in September 2025?
The climate in Tolmin during September can be summarized as mild and wet.
September is in the fall / autumn in Tolmin and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 16°C (61°F), whilst at night 7°C (44°F) is normal.
| Daytime temperature | 15.9°C 60.5°F |
|---|---|
| Nightly temperature | 6.6°C 43.8°F |
| Average temperature | 11.2°C 52.2°F |
| Daily sunshine | 6.8 hrs |
| Avg rainfall | 161 mm 6.3 ins |
| Rainy days | 14 days |
| Sea temperature | 22.7°C 72.9°F |
| Humidity | 80% |
| Windspeed | 9.4kph 6 mph |
On average September is the 3rd wettest month of the year in Tolmin with around 161mm 6.3 inches of rain making it a wet time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.8 hours of sunshine per day.
September temperatures in Tolmin
September rainfall
September hourly sunshine
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 Tolmin in September 2025.
Other monthly averages
Best places to visit in September
Tolmin weather stats
| Hottest month: | July | 19.2°C 66.6°F |
|---|---|---|
| Driest month: | February | 99mm 3.9ins |
| Sunniest month: | August | 8.2hrs |
| Coldest month: | January | -0.1°C 31.8°F |
| Wettest month: | November | 192mm 7.6ins |
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