Current Sea Water Temperature:
+68.4°F
| Maximum Sea Water Temperature in July: | 68.4°F |
| Minimum Sea Water Temperature in July: | 56.8°F |
| Average water temperature in July: | 62.0°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| July 13 | 68.4°F | July 08 | 64.8°F |
| July 12 | 68.4°F | July 07 | 64.6°F |
| July 11 | 67.4°F | July 06 | 63.6°F |
| July 10 | 66.2°F | July 05 | 64.0°F |
| July 09 | 64.8°F | July 04 | 63.6°F |
When is the Warmest Sea for Plymouth?
According to our data for the last three years for Plymouth 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 Plymouth was 64.8°F. The maximum and minimum values were 62.6°F and 66.0°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Plymouth was 62.8°F. The maximum and minimum values were 60.2°F and 65.2°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Plymouth was 63.7°F. The maximum and minimum values were 60.8°F and 65.4°F respectively.
United Kingdom Resorts:
NAME
F°
| Bath |  |
+58 |
| Belfast | |
+50 |
| Bournemouth | |
+62 |
| Brighton |  |
+62 |
| Bristol |  |
+58 |
| Edinburgh | |
+48 |
| Gibraltar | |
+74 |
| Glasgow | |
+46 |
| Liverpool | |
+56 |
| London | |
+62 |
| Middlesbrough | |
+56 |
| Plymouth | |
+68 |
| Scarborough | |
+58 |
| Torquay | |
+60 |
| York | |
+50 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Plymouth
Local time: 03:40
14 jul, tuesday
| 0600 |  |
62°F | SW 17 mph |
| 0900 | |
72°F | W 17 mph |
| 1200 | |
78°F | W 17 mph |
| 1500 | |
80°F | NW 12 mph |
| 1800 | |
78°F | NW 9 mph |
| 2100 | |
70°F | W 1 mph |
15 jul, wednesday
| 0000 |  |
68°F | SW 6 mph |
| 0300 | |
70°F | W 9 mph |