World Resorts Ireland Dublin Weather

Dublin Sea Temperature in December

Average sea water temperature in December:
+49.3°F
Minimum sea water temperature in December: 52.5°F
Maximum sea water temperature in December: 45.5°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 49.5°F. The highest and lowest sea temperatures during the month were 50.4°F and 48.6°F.

Monthly sea water temperature in Dublin, °F

Which Ireland resorts have warmest sea in December?

Place name December 2025 December 2024
Cork 50.7°F 50.9°F
Killarney 50.1°F 50.8°F
Dublin 49.5°F 48.9°F
Limerick 46.7°F 48.8°F

Best time for vacation in Dublin

Sunniest months:
April 7 days
September 6 days
March 6 days
Warmest months:
July 65.0 °F
August 64.4 °F
June 61.7 °F
Warmest sea temp:
August 59.9 °F
July 59.0 °F
September 58.9 °F
Coldest months:
January 44.8 °F
February 46.5 °F
December 46.6 °F
Rainiest months:
November 5 days
June 5 days
July 5 days
Windiest months:
December 13.8 mph
February 13.6 mph
January 12.9 mph

Dublin on a weather map

Current weather
04:38
Dublin
+57°F
NW 2 mph
Feels like: +57°F
Precip.: 73%
Places in Ireland:
Name
°F
Dublin
+57°F
Killarney
+55°F
Cork
+57°F
Limerick
+55°F
24 Hours Forecast
Dublin
Local time: 04:38
August 29, saturday
0600
57°F
NW
2 mph
0900
57°F
SW
2 mph
1200
59°F
S
3 mph
1500
59°F
SE
6 mph
1800
59°F
E
4 mph
2100
57°F
NE
5 mph
August 30, sunday
0000
55°F
NE
6 mph
0300
54°F
NE
5 mph
Units of measurement: °C / °F