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:
April 5 days
May 4 days
March 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 45.5 °F
December 47.0 °F
February 47.1 °F
Rainiest months:
December 10 days
January 9 days
February 8 days
Windiest months:
February 11.8 mph
December 11.3 mph
January 10.3 mph

Killarney on a weather map

Current weather
09:40
Killarney
+48°F
NW 25 mph
Feels like: +41°F
Precip.: 100%
Places in Ireland:
Name
°F
Dublin
+45°F
Killarney
+48°F
Cork
+46°F
Limerick
+45°F
24 Hours Forecast
Killarney
Local time: 09:40
December 05, friday
1200
50°F
N
9 mph
1500
48°F
NE
13 mph
1800
46°F
NE
17 mph
2100
45°F
NE
3 mph
December 06, saturday
0000
46°F
NE
12 mph
0300
50°F
E
17 mph
0600
48°F
E
22 mph
0900
48°F
E
21 mph
Units of measurement: °C / °F