Measurements:
°C
°F
CURRENT WEATHER
00:22
Killarney
40°F
E 6 mph
Feels like: 36°F
Precip: 72%
World Resorts Ireland Killarney Weather

7 Day Weather Forecast

05.17
sun
DAY
46°F
E 9 mph
precip
100%
NIGHT
42°F
NE 4 mph
precip
100%
05.18
mon
DAY
52°F
NW 7 mph
precip
100%
NIGHT
46°F
N 6 mph
precip
0%
05.19
tue
DAY
58°F
NE 15 mph
precip
77%
NIGHT
54°F
NE 11 mph
precip
100%
05.20
wed
DAY
58°F
NE 11 mph
precip
100%
NIGHT
54°F
N 6 mph
precip
100%
05.21
thu
DAY
62°F
N 8 mph
precip
76%
NIGHT
50°F
NW 6 mph
precip
44%
05.22
fri
DAY
60°F
N 6 mph
precip
81%
NIGHT
48°F
NE 4 mph
precip
0%
05.23
sat
DAY
66°F
NE 4 mph
precip
0%
NIGHT
48°F
NE 2 mph
precip
0%

Killarney Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Killarney was 12.2°F. The maximum and minimum values were 11.7°F and 12.7°F respectively.

Killarney on the Weather Map

Best Time to Visit Killarney
The most sunny months:
April 5 days
May 4 days
March 4 days
The most warm months:
July 66.2 °F
August 65.5 °F
June 63.3 °F
Warmest sea temperature:
August 62.4 °F
July 61.8 °F
September 60.0 °F
The most cold months:
January 44.8 °F
December 46.6 °F
February 46.8 °F
The most rainy months:
December 9 days
January 9 days
November 8 days
The most windy months:
February 11 mph
December 11 mph
January 10 mph
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