Trilj Weather in September
What's the weather like in Trilj (Split-Dalmatia) in September 2025?
The climate in Trilj during September can be summarized as warm and reasonably dry.
September is in the fall / autumn in Trilj and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 24°C (75°F), whilst at night 13°C (55°F) is normal.
| Daytime temperature | 23.7°C 74.6°F |
|---|---|
| Nightly temperature | 12.6°C 54.6°F |
| Average temperature | 18.1°C 64.6°F |
| Daily sunshine | 8.3 hrs |
| Avg rainfall | 76 mm 3 ins |
| Rainy days | 10 days |
| Sea temperature | 23.1°C 73.7°F |
| Humidity | 68% |
| Windspeed | 7.2kph 5 mph |
On average September is the 4th driest month of the year in Trilj with around 76mm 3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.3 hours of sunshine per day.
September temperatures in Trilj
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 Trilj in September 2025.
Other monthly averages
Best places to visit in September
Trilj weather stats
| Hottest month: | July | 27.2°C 81°F |
|---|---|---|
| Driest month: | July | 51mm 2ins |
| Sunniest month: | July | 11.2hrs |
| Coldest month: | January | 6.7°C 44.1°F |
| Wettest month: | November | 145mm 5.7ins |
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