Castlebar Weather in September
What's the weather like in Castlebar (Connaught) in September 2024?
The climate in Castlebar during September can be summarized as mild and damp.
September is in the fall / autumn in Castlebar 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 (48°F) is normal.
| Daytime temperature | 16°C 60.7°F |
|---|---|
| Nightly temperature | 8.7°C 47.6°F |
| Average temperature | 12.3°C 54.1°F |
| Daily sunshine | 3.6 hrs |
| Avg rainfall | 111 mm 4.4 ins |
| Rainy days | 21 days |
| Sea temperature | 14.6°C 58.2°F |
| Humidity | 88% |
| Windspeed | 18.4kph 11 mph |
On average September is the 5th wettest month of the year in Castlebar with around 111mm 4.4 inches of rain making it a damp time to visit. This rainfall is typically spread over 21 days, although this may vary considerably.
On the flip side this corresponds to an average of 3.6 hours of sunshine per day.
September temperatures in Castlebar
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 Castlebar in September 2024.
Other monthly averages
Best places to visit in September
Castlebar weather stats
| Hottest month: | July | 17.6°C 63.7°F |
|---|---|---|
| Driest month: | April | 66mm 2.6ins |
| Sunniest month: | May | 5.9hrs |
| Coldest month: | January | 7.3°C 45.1°F |
| Wettest month: | November | 134mm 5.3ins |
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