The climate in Monmouth during September can be summarized as warm and a little damp.
September is in the fall / autumn in Monmouth and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 25°C (77°F), whilst at night 12°C (54°F) is normal.
Daytime temperature | 25.1°C 77.1°F |
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Nightly temperature | 12°C 53.5°F |
Average temperature | 18.5°C 65.3°F |
Daily sunshine | 8.2 hrs |
Avg rainfall | 97 mm 3.8 ins |
Rainy days | 9 days |
Sea temperature | 19.6°C 67.2°F |
Humidity | 73% |
Windspeed | 14.4kph 9 mph |
On average September is the 4th wettest month of the year in Monmouth with around 97mm 3.8 inches of rain making it a a little damp 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 8.2 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 Monmouth in September 2024.
Best places to visit in September
Hottest month: | July | 30°C 86°F |
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Driest month: | February | 36mm 1.4ins |
Sunniest month: | July | 10.6hrs |
Coldest month: | January | -0.9°C 30.4°F |
Wettest month: | July | 113mm 4.4ins |