Treviglio Weather in September
What's the weather like in Treviglio (Lombardy) in September 2025?
The climate in Treviglio during September can be summarized as warm and a little damp.
September is in the fall / autumn in Treviglio and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 24°C (75°F), whilst at night 14°C (57°F) is normal.
| Daytime temperature | 23.8°C 74.8°F |
|---|---|
| Nightly temperature | 13.7°C 56.6°F |
| Average temperature | 18.7°C 65.7°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 89 mm 3.5 ins |
| Rainy days | 10 days |
| Sea temperature | 22.4°C 72.3°F |
| Humidity | 73% |
| Windspeed | 3.2kph 2 mph |
On average September is the 5th driest month of the year in Treviglio with around 89mm 3.5 inches of rain making it a a little damp 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 7 hours of sunshine per day.
September temperatures in Treviglio
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 Treviglio in September 2025.
Other monthly averages
Best places to visit in September
Treviglio weather stats
| Hottest month: | July | 28°C 82.4°F |
|---|---|---|
| Driest month: | December | 59mm 2.3ins |
| Sunniest month: | July | 9.7hrs |
| Coldest month: | January | 5°C 41°F |
| Wettest month: | May | 119mm 4.7ins |
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