World Resorts Ireland Killarney Weather

Killarney Sea Temperature in September

Average sea water temperature in September:
+59.0°F
Minimum sea water temperature in September: 64.4°F
Maximum sea water temperature in September: 55.8°F

Daily sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 59.7°F. The highest and lowest sea temperatures during the month were 62.2°F and 57.9°F.

Monthly sea water temperature in Killarney, °F

Which Ireland resorts have warmest sea in September?

Place name September 2025 September 2024
Cork 60.1°F 59.4°F
Dublin 59.9°F 58.7°F
Limerick 59.7°F 60.2°F
Killarney 59.7°F 59.4°F

Best time for vacation in Killarney

Sunniest months:
May 4 days
March 4 days
April 4 days
Warmest months:
July 64.5 °F
August 64.0 °F
June 62.0 °F
Warmest sea temp:
August 61.2 °F
July 60.7 °F
September 59.0 °F
Coldest months:
January 45.4 °F
December 46.9 °F
February 47.1 °F
Rainiest months:
December 9 days
January 9 days
November 8 days
Windiest months:
February 11.6 mph
December 11.1 mph
January 10.1 mph

Killarney on a weather map

Current weather
16:11
Killarney
+63°F
S 6 mph
Feels like: +63°F
Precip.: 0%
Places in Ireland:
Name
°F
Dublin
+57°F
Killarney
+63°F
Cork
+64°F
Limerick
+63°F
24 Hours Forecast
Killarney
Local time: 16:11
April 27, monday
1800
61°F
S
6 mph
2100
52°F
S
4 mph
April 28, tuesday
0000
45°F
S
3 mph
0300
43°F
SW
2 mph
0600
43°F
SW
3 mph
0900
55°F
SW
4 mph
1200
61°F
W
5 mph
1500
64°F
W
6 mph
Units of measurement: °C / °F