World Resorts Ireland Killarney Weather

Killarney sea water temperature

Current sea water temperature:
+48.4°F
Minimum sea water temperature in March: 50.7°F
Maximum sea water temperature in March: 45.3°F
Average sea water temperature in March: 47.7°F

Sea water temperature for the last 10 days:

March 17 48.4°F March 12 48.7°F
March 16 48.4°F March 11 48.6°F
March 15 48.6°F March 10 48.7°F
March 14 48.0°F March 9 48.0°F
March 13 48.2°F March 8 48.0°F

When is the warmest sea in Killarney?

Based on the data about daily sea water temperature for the last three years the warmest sea in Killarney was noticed in August, July and September.

Monthly Sea Temperatures in Killarney, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 63.2°F. The highest and lowest sea temperatures during the month were 64.9°F and 61.5°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 62.7°F. The highest and lowest sea temperatures during the month were 63.3°F and 61.7°F.

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.

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 45.4 °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

Killarney
+50°F
N 10 mph
Feels like: +46°F
Precip.: 100%
Places in Ireland:
Name
°F
+54°F
+50°F
+52°F
+55°F
24 Hours Forecast
Killarney
Local time: 11:23
March 17, tuesday
1200
50°F
N
10 mph
1500
50°F
NE
5 mph
1800
48°F
N
3 mph
2100
48°F
N
2 mph
March 18, wednesday
0000
48°F
NW
2 mph
0300
48°F
NW
4 mph
0600
46°F
NW
5 mph
0900
50°F
W
5 mph
Units of measurement: °C / °F