World Resorts Ireland Dublin Weather

Dublin Sea Temperature in September

Average sea water temperature in September:
+59.0°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:
2026
2025
2024

The average sea water temperature in September of 2026 was 61.8°F. The highest and lowest sea temperatures during the month were 62.4°F and 61.2°F.

Monthly sea water temperature in Dublin, °F

Which Ireland resorts have warmest sea in September?

Place name September 2026 September 2025
Limerick 62.3°F 59.7°F
Killarney 62.0°F 59.7°F
Cork 61.9°F 60.1°F
Dublin 61.8°F 59.9°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
11:08
Dublin
+54°F
N 9 mph
Feels like: +50°F
Precip.: 26%
Places in Ireland:
Name
°F
Dublin
+54°F
Killarney
+57°F
Cork
+55°F
Limerick
+55°F
24 Hours Forecast
Dublin
Local time: 11:08
September 18, friday
1200
54°F
N
9 mph
1500
57°F
NE
19 mph
1800
61°F
NE
16 mph
2100
59°F
NE
14 mph
September 19, saturday
0000
59°F
NE
13 mph
0300
61°F
NE
17 mph
0600
57°F
E
15 mph
0900
55°F
E
14 mph
Units of measurement: °C / °F