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
January 6 days
March 6 days
Warmest months:
July 64.8 °F
August 64.3 °F
June 61.6 °F
Warmest sea temp:
August 59.7 °F
September 58.9 °F
July 58.8 °F
Coldest months:
January 44.9 °F
February 46.5 °F
December 46.6 °F
Rainiest months:
June 6 days
December 6 days
November 5 days
Windiest months:
December 13.9 mph
February 13.8 mph
January 12.9 mph

Dublin on a weather map

Current weather
10:46
Dublin
+48°F
NW 22 mph
Feels like: +41°F
Precip.: 100%
Places in Ireland:
Name
°F
Dublin
+48°F
Killarney
+45°F
Cork
+46°F
Limerick
+45°F
24 Hours Forecast
Dublin
Local time: 10:46
December 20, saturday
1200
48°F
NW
22 mph
1500
48°F
NW
21 mph
1800
45°F
NW
19 mph
2100
45°F
NW
19 mph
December 21, sunday
0000
43°F
N
13 mph
0300
43°F
N
12 mph
0600
43°F
N
8 mph
0900
41°F
NW
9 mph
Units of measurement: °C / °F