The climate in Killarney during October can be summarized as cool and reasonably dry.
October is in the fall / autumn in Killarney and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 12°C (53°F), whilst at night -1°C (31°F) is normal.
Daytime temperature | 11.6°C 52.8°F |
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Nightly temperature | -0.6°C 31°F |
Average temperature | 5.5°C 41.9°F |
Daily sunshine | 5.8 hrs |
Avg rainfall | 32 mm 1.3 ins |
Rainy days | 5 days |
Sea temperature | 9.9°C 49.8°F |
Humidity | 70% |
Windspeed | 17.6kph 11 mph |
On average October is the 6th driest month of the year in Killarney with around 32mm 1.3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.8 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 Killarney in October 2025.
Best places to visit in October
Hottest month: | July | 25.9°C 78.6°F |
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Driest month: | November | 20mm 0.8ins |
Sunniest month: | July | 11hrs |
Coldest month: | January | -11.3°C 11.7°F |
Wettest month: | June | 90mm 3.5ins |