Bethesda Weather in September
What's the weather like in Bethesda (Wales) in September 2024?
The climate in Bethesda during September can be summarized as mild and wet.
September is in the fall / autumn in Bethesda and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 17°C (62°F), whilst at night 10°C (50°F) is normal.
| Daytime temperature | 16.5°C 61.6°F |
|---|---|
| Nightly temperature | 10°C 49.9°F |
| Average temperature | 13.2°C 55.8°F |
| Daily sunshine | 4.5 hrs |
| Avg rainfall | 121 mm 4.8 ins |
| Rainy days | 17 days |
| Sea temperature | 15.1°C 59.2°F |
| Humidity | 86% |
| Windspeed | 19.1kph 12 mph |
On average September is the 5th wettest month of the year in Bethesda with around 121mm 4.8 inches of rain making it a wet 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 4.5 hours of sunshine per day.
September temperatures in Bethesda
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 Bethesda in September 2024.
Other monthly averages
Best places to visit in September
Bethesda weather stats
| Hottest month: | July | 18.3°C 64.9°F |
|---|---|---|
| Driest month: | May | 79mm 3.1ins |
| Sunniest month: | May | 6.7hrs |
| Coldest month: | February | 6.9°C 44.4°F |
| Wettest month: | November | 161mm 6.3ins |
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