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 61.6 °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:
June 6 days
November 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
17:29
Dublin
+57°F
S 7 mph
Feels like: +55°F
Precip.: 76%
Places in Ireland:
Name
°F
Dublin
+57°F
Killarney
+59°F
Cork
+57°F
Limerick
+59°F
24 Hours Forecast
Dublin
Local time: 17:29
April 27, monday
1800
57°F
S
7 mph
2100
48°F
SW
4 mph
April 28, tuesday
0000
43°F
S
4 mph
0300
45°F
SW
7 mph
0600
46°F
W
8 mph
0900
48°F
W
11 mph
1200
48°F
SW
11 mph
1500
52°F
W
12 mph
Units of measurement: °C / °F