Castleisland Weather in August
What's the weather like in Castleisland (Munster) in August 2025?
The climate in Castleisland during August can be summarized as mild and a little damp.
August is in the summer in Castleisland and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around 18°C (64°F), whilst at night 11°C (52°F) is normal.
| Daytime temperature | 17.9°C 64.2°F |
|---|---|
| Nightly temperature | 10.9°C 51.6°F |
| Average temperature | 14.4°C 57.9°F |
| Daily sunshine | 5 hrs |
| Avg rainfall | 95 mm 3.7 ins |
| Rainy days | 20 days |
| Sea temperature | 15.9°C 60.6°F |
| Humidity | 84% |
| Windspeed | 16.6kph 10 mph |
On average August is the 5th driest month of the year in Castleisland with around 95mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.
On the flip side this corresponds to an average of 5 hours of sunshine per day.
August temperatures in Castleisland
August rainfall
August 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 Castleisland in August 2025.
Other monthly averages
Best places to visit in August
Castleisland weather stats
| Hottest month: | July | 17.8°C 64°F |
|---|---|---|
| Driest month: | June | 73mm 2.9ins |
| Sunniest month: | May | 6.3hrs |
| Coldest month: | January | 7.7°C 45.9°F |
| Wettest month: | December | 160mm 6.3ins |
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