Llanelli Weather in September
What's the weather like in Llanelli (Wales) in September 2024?
The climate in Llanelli during September can be summarized as mild and wet.
September is in the fall / autumn in Llanelli and is typically the 4th 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 | 16.9°C 62.3°F |
|---|---|
| Nightly temperature | 10.2°C 50.3°F |
| Average temperature | 13.5°C 56.3°F |
| Daily sunshine | 4.8 hrs |
| Avg rainfall | 130 mm 5.1 ins |
| Rainy days | 16 days |
| Sea temperature | 15.9°C 60.6°F |
| Humidity | 88% |
| Windspeed | 18.7kph 12 mph |
On average September is the 5th wettest month of the year in Llanelli with around 130mm 5.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.8 hours of sunshine per day.
September temperatures in Llanelli
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 Llanelli in September 2024.
Other monthly averages
Best places to visit in September
Llanelli weather stats
| Hottest month: | July | 19.1°C 66.4°F |
|---|---|---|
| Driest month: | April | 84mm 3.3ins |
| Sunniest month: | May | 6.9hrs |
| Coldest month: | February | 7°C 44.6°F |
| Wettest month: | December | 164mm 6.5ins |
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