Current sea water temperature:
+40.8°F
| Minimum sea water temperature in December: | 50.5°F |
| Maximum sea water temperature in December: | 40.1°F |
| Average sea water temperature in December: | 45.4°F |
| more information | |
14 days
forecast
forecast
| Plymouth |
monthly
weather
weather
| Plymouth |
Sea water temperature for the last 10 days:
| December 27 | 40.8°F | December 22 | 41.2°F |
| December 26 | 41.0°F | December 21 | 41.4°F |
| December 25 | 41.2°F | December 20 | 41.4°F |
| December 24 | 40.8°F | December 19 | 41.0°F |
| December 23 | 40.6°F | December 18 | 41.9°F |
Monthly sea water temperature, °F
When is the warmest sea in Plymouth?
Based on the data about daily sea water temperature for the last three years the warmest sea in Plymouth was noticed in August, July and September.
Monthly Sea Temperatures in Plymouth, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 67.4°F. The highest and lowest sea temperatures during the month were 70.9°F and 64.9°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 66.9°F. The highest and lowest sea temperatures during the month were 72.3°F and 63.5°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 64.5°F. The highest and lowest sea temperatures during the month were 68.0°F and 61.9°F.
current
weather
weather
| Plymouth |
weather in
January
January
| Plymouth |
Best time for vacation in Plymouth
Plymouth on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Plymouth
Local time: 21:17
December 28, sunday
0000
16°F
E
5 mph
5 mph
0300
16°F
E
5 mph
5 mph
0600
14°F
E
6 mph
6 mph
0900
21°F
E
6 mph
6 mph
1200
34°F
E
5 mph
5 mph
1500
37°F
NE
6 mph
6 mph
1800
36°F
NE
6 mph
6 mph
2100
36°F
NE
9 mph
9 mph
