Monza Weather in September
What's the weather like in Monza (Lombardy) in September 2025?
The climate in Monza during September can be summarized as warm and a little damp.
September is in the fall / autumn in Monza and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 24°C (74°F), whilst at night 13°C (56°F) is normal.
| Daytime temperature | 23.5°C 74.2°F |
|---|---|
| Nightly temperature | 13.2°C 55.7°F |
| Average temperature | 18.3°C 64.9°F |
| Daily sunshine | 6.8 hrs |
| Avg rainfall | 95 mm 3.8 ins |
| Rainy days | 10 days |
| Sea temperature | 22.4°C 72.3°F |
| Humidity | 74% |
| Windspeed | 3.2kph 2 mph |
On average September is the 6th driest month of the year in Monza with around 95mm 3.8 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 6.8 hours of sunshine per day.
September temperatures in Monza
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 Monza in September 2025.
Other monthly averages
Best places to visit in September
Monza weather stats
| Hottest month: | July | 27.8°C 82°F |
|---|---|---|
| Driest month: | December | 63mm 2.5ins |
| Sunniest month: | July | 9.6hrs |
| Coldest month: | January | 5°C 41°F |
| Wettest month: | May | 125mm 4.9ins |
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