Current sea water temperature:
+50.0°F
| Minimum sea water temperature in December: | 52.2°F |
| Maximum sea water temperature in December: | 47.3°F |
| Average sea water temperature in December: | 50.1°F |
| more information | |
14 days
forecast
forecast
| Killarney |
monthly
weather
weather
| Killarney |
Sea water temperature for the last 10 days:
| December 18 | 50.0°F | December 13 | 50.2°F |
| December 17 | 50.2°F | December 12 | 50.4°F |
| December 16 | 50.2°F | December 11 | 50.4°F |
| December 15 | 50.5°F | December 10 | 50.5°F |
| December 14 | 50.2°F | December 9 | 50.4°F |
Monthly sea water temperature, °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.
current
weather
weather
| Killarney |
weather in
December
December
| Killarney |
Best time for vacation in Killarney
Killarney on a weather map
24 Hours Forecast
Killarney
Local time: 19:54
December 18, thursday
2100
43°F
NE
20 mph
20 mph
December 19, friday
0000
45°F
E
19 mph
19 mph
0300
43°F
E
17 mph
17 mph
0600
43°F
NE
12 mph
12 mph
0900
41°F
NE
12 mph
12 mph
1200
45°F
NE
10 mph
10 mph
1500
46°F
NE
9 mph
9 mph
1800
45°F
N
7 mph
7 mph
