World Resorts Ireland Dublin Weather

Dublin Sea Temperature in September

Average sea water temperature in September:
+58.9°F
Minimum sea water temperature in September: 62.4°F
Maximum sea water temperature in September: 55.9°F

Daily sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 59.9°F. The highest and lowest sea temperatures during the month were 61.5°F and 58.5°F.

Monthly sea water temperature in Dublin, °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 Dublin

Sunniest months:
April 7 days
September 6 days
March 6 days
Warmest months:
July 64.8 °F
August 64.3 °F
June 61.7 °F
Warmest sea temp:
August 59.7 °F
September 58.9 °F
July 58.8 °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
17:59
Dublin
+66°F
SW 6 mph
Feels like: +66°F
Precip.: 3%
Places in Ireland:
Name
°F
Dublin
+66°F
Killarney
+72°F
Cork
+72°F
Limerick
+73°F
24 Hours Forecast
Dublin
Local time: 17:59
July 19, sunday
1800
66°F
SW
6 mph
2100
57°F
SW
2 mph
July 20, monday
0000
54°F
SE
5 mph
0300
52°F
SE
6 mph
0600
50°F
SE
6 mph
0900
59°F
S
9 mph
1200
66°F
S
10 mph
1500
68°F
SW
11 mph
Units of measurement: °C / °F