Measurements:
°C
°F
CURRENT WEATHER
22:14
Killarney
50°F
SE 9 mph
Feels like: 48°F
Precip: 22%
World Resorts Ireland Killarney Weather

7 Day Weather Forecast

09.08
tue
DAY
56°F
SE 16 mph
precip
30%
NIGHT
48°F
E 4 mph
precip
15%
09.09
wed
DAY
60°F
NE 6 mph
precip
17%
NIGHT
52°F
N 6 mph
precip
48%
09.10
thu
DAY
58°F
N 6 mph
precip
49%
NIGHT
54°F
E 5 mph
precip
31%
09.11
fri
DAY
60°F
E 4 mph
precip
17%
NIGHT
50°F
N 6 mph
precip
19%
09.12
sat
DAY
62°F
NE 9 mph
precip
52%
NIGHT
58°F
E 6 mph
precip
38%
09.13
sun
DAY
64°F
NE 4 mph
precip
16%
NIGHT
62°F
N 4 mph
precip
31%
09.14
mon
DAY
70°F
NE 9 mph
precip
8%
NIGHT
62°F
N 6 mph
precip
42%

Killarney Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Killarney was 15.4°F. The maximum and minimum values were 14.4°F and 16.8°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 66.6 °F
August 65.5 °F
June 63.4 °F
Warmest sea temperature:
August 62.6 °F
July 62.1 °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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