Measurements:
°C
°F
CURRENT WEATHER
00:11
Killarney
54°F
NW 14 mph
Feels like: 50°F
Precip: 30%
World Resorts Ireland Killarney Weather

7 Day Weather Forecast

09.29
tue
DAY
62°F
NW 25 mph
precip
33%
NIGHT
52°F
N 11 mph
precip
44%
09.30
wed
DAY
56°F
NE 12 mph
precip
27%
NIGHT
48°F
N 6 mph
precip
41%
10.01
thu
DAY
54°F
N 11 mph
precip
43%
NIGHT
54°F
N 5 mph
precip
64%
10.02
fri
DAY
60°F
NE 6 mph
precip
21%
NIGHT
50°F
N 6 mph
precip
39%
10.03
sat
DAY
58°F
N 6 mph
precip
50%
NIGHT
52°F
SE 4 mph
precip
48%
10.04
sun
DAY
54°F
NE 8 mph
precip
20%
NIGHT
44°F
S 4 mph
precip
27%
10.05
mon
DAY
54°F
S 3 mph
precip
5%
NIGHT
44°F
NW 1 mph
precip
12%

Killarney Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Killarney was 16.5°F. The maximum and minimum values were 15.8°F and 17.3°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 60.2 °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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