The climate in Follonica during September can be summarized as warm, humid and reasonably dry.
September is in the fall / autumn in Follonica and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (78°F), whilst at night 16°C (61°F) is normal.
Daytime temperature | 25.5°C 77.9°F |
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Nightly temperature | 16.1°C 61°F |
Average temperature | 20.8°C 69.4°F |
Daily sunshine | 7.7 hrs |
Avg rainfall | 59 mm 2.3 ins |
Rainy days | 9 days |
Sea temperature | 23.1°C 73.5°F |
Humidity | 72% |
Windspeed | 8.3kph 5 mph |
On average September is the 6th wettest month of the year in Follonica with around 59mm 2.3 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 7.7 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 Follonica in September 2025.
Best places to visit in September
Hottest month: | July | 28.7°C 83.7°F |
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Driest month: | July | 19mm 0.7ins |
Sunniest month: | July | 10.5hrs |
Coldest month: | January | 11.3°C 52.3°F |
Wettest month: | November | 88mm 3.5ins |