Current Sea Water Temperature:
+45.8°F
| Maximum Sea Water Temperature in February: | 47.8°F |
| Minimum Sea Water Temperature in February: | 42.8°F |
| Average water temperature in February: | 45.2°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| February 13 | 45.8°F | February 08 | 45.4°F |
| February 12 | 45.6°F | February 07 | 45.4°F |
| February 11 | 45.4°F | February 06 | 45.2°F |
| February 10 | 45.4°F | February 05 | 45.0°F |
| February 09 | 45.4°F | February 04 | 45.0°F |
When is the Warmest Sea for Belfast?
According to our data for the last three years for Belfast the highest average sea water temperature was in August, September and July.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Belfast was 62.2°F. The maximum and minimum values were 59.6°F and 64.2°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Belfast was 59.7°F. The maximum and minimum values were 57.8°F and 62.2°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Belfast was 60.6°F. The maximum and minimum values were 58.6°F and 63.4°F respectively.
United Kingdom Resorts:
NAME
F°
| Bath |  |
+34 |
| Belfast |  |
+26 |
| Bournemouth |  |
+36 |
| Brighton | |
+38 |
| Bristol | |
+34 |
| Edinburgh |  |
+28 |
| Gibraltar | |
+50 |
| Glasgow | |
+26 |
| Liverpool | |
+32 |
| London | |
+36 |
| Middlesbrough | |
+32 |
| Plymouth | |
+36 |
| Scarborough | |
+36 |
| Torquay |  |
+34 |
| York | |
+32 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Belfast
Local time: 21:18
14 feb, saturday
| 0000 |  |
24°F | E 6 mph |
| 0300 | |
26°F | E 6 mph |
| 0600 |  |
26°F | E 6 mph |
| 0900 |  |
28°F | E 6 mph |
| 1200 |  |
38°F | NE 6 mph |
| 1500 |  |
38°F | N 6 mph |
| 1800 | |
34°F | N 7 mph |
| 2100 |  |
34°F | N 14 mph |