Spring (March–May): Average 45–54°F, mild and rainy, with the most rainfall in March. Common activities: Hiking, exploring Killarney National Park. Recommended clothing: Waterproof jacket, warm layers, comfortable hiking shoes.
Summer (June–August): Average 57–60°F, warm and humid, with relatively less rainfall. Common activities: Boat trips, cycling, visiting Muckross House. Recommended clothing: Light and breathable clothing, rain gear.
Autumn (September–November): Average 53–56°F, cool and rainy, with more rainfall in September and November. Common activities: Sightseeing, visiting castles. Recommended clothing: Warm jacket, waterproof clothing.
Winter (December–February): Average 42–46°F, cold and humid, with moderate rainfall. Common activities: Indoor sightseeing, enjoying traditional Irish pubs. Recommended clothing: Thick coat, warm layers, waterproof boots.
Killarney climatological average
Annual average temperature: approx. 51.3°F / Annual rainfall: approx. 1424 mm / Summer humidity: 70%–80% / Rainiest month: March
Killarney monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
42.8°F
113.1
February
46.4°F
129.1
March
45.5°F
155.7
April
48.7°F
92.4
May
54.3°F
68.1
June
57.7°F
95.3
July
58.6°F
95.6
August
60.3°F
93.1
September
56.8°F
152.6
October
53.4°F
139.6
November
48.2°F
153.9
December
43°F
135.6
Killarney weather for the next seven days
5/4
Monday
Patchy rain nearby
55°F/39.2°F
5/5
Tuesday
Patchy rain nearby
52.3°F/37.6°F
5/6
Wednesday
Patchy rain nearby
55.6°F/42.9°F
5/7
Thursday
Patchy rain nearby
55.4°F/34.7°F
5/8
Friday
Patchy rain nearby
55.9°F/44.2°F
5/9
Saturday
Patchy rain nearby
49.5°F/44.2°F
5/10
Sunday
Patchy rain nearby
49.7°F/44°F
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