Bolton Weather in September
What's the weather like in Bolton (England) in September 2025?
The climate in Bolton during September can be summarized as mild and damp.
September is in the fall / autumn in Bolton and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 16°C (61°F), whilst at night 9°C (49°F) is normal.
| Daytime temperature | 16.2°C 61.1°F |
|---|---|
| Nightly temperature | 9.3°C 48.7°F |
| Average temperature | 12.7°C 54.9°F |
| Daily sunshine | 4.1 hrs |
| Avg rainfall | 115 mm 4.5 ins |
| Rainy days | 17 days |
| Sea temperature | 14.7°C 58.4°F |
| Humidity | 84% |
| Windspeed | 15.8kph 10 mph |
On average September is the 5th wettest month of the year in Bolton with around 115mm 4.5 inches of rain making it a damp time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.1 hours of sunshine per day.
September temperatures in Bolton
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 Bolton in September 2025.
Other monthly averages
Best places to visit in September
Bolton weather stats
| Hottest month: | July | 18.6°C 65.5°F |
|---|---|---|
| Driest month: | April | 75mm 3ins |
| Sunniest month: | May | 6.1hrs |
| Coldest month: | February | 5.6°C 42.1°F |
| Wettest month: | October | 131mm 5.2ins |
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