Killarney, Ireland: Annual Weather Averages

July is the hottest month in Killarney with an average temperature of 16°C (61°F) and the coldest is January at 7°C (45°F) with the most daily sunshine hours at 7 in June. The wettest month is October with an average of 133mm of rain. The best month to swim in the sea is in August when the average sea temperature is 17°C (63°F).

Average Temperature: Killarney

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7 8 9 9 12 14 16 16 14 12 10 8
°F 45 46 48 48 54 57 61 61 57 54 50 46

Average High/Low Temperature: Killarney

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High °C 9 10 11 12 15 16 18 18 17 14 12 10
High °F 48 50 52 54 59 61 64 64 63 57 54 50
Low °C 5 5 6 6 8 11 13 13 11 9 7 6
Low °F 41 41 43 43 46 52 55 55 52 48 45 43

Average Rainfall: Killarney

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 127 103 84 81 59 72 75 77 87 133 121 112
Days 24 20 23 21 20 20 23 22 20 23 22 22

Average Daily Sunshine Hours: Killarney

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hours 3 4 5 6 5 7 4 4 4 4 3 3

Average Sea Temperature: Killarney

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 11 10 10 11 12 14 16 17 16 14 13 11
°F 52 50 50 52 54 57 61 63 61 57 55 52

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