Killarney, Ireland: Annual Weather Averages
July is the hottest month in Killarney with an average temperature of 61°F (16°C) and the coldest is January at 45°F (7°C) 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 63°F (17°C).
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 |