Measurements:
°C
°F
Plymouth
58°F
SE 11 mph
Feels like: 54°F
Precip: 6%
World Resorts USA Plymouth Weather

Plymouth Sea Water Temperature

Current Sea Water Temperature:
+55.6°F
Maximum Sea Water Temperature in October: 65.4°F
Minimum Sea Water Temperature in October: 55.2°F
Average water temperature in October: 60.5°F

Sea Water Temperature for the Last 10 Days:

October 26 55.6°F October 21 57.2°F
October 25 55.8°F October 20 57.4°F
October 24 56.2°F October 19 58.2°F
October 23 56.6°F October 18 59.2°F
October 22 57.0°F October 17 60.8°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, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Plymouth was 70.3°F. The maximum and minimum values were 67.2°F and 73.2°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Plymouth was 68.9°F. The maximum and minimum values were 64.6°F and 72.0°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Plymouth was 66.0°F. The maximum and minimum values were 61.2°F and 70.2°F respectively.

Best Time to Visit Plymouth
The most sunny months:
November 15 days
December 13 days
June 13 days
The most warm months:
July 82.6 °F
August 81.1 °F
June 76.6 °F
Warmest sea temperature:
August 69.9 °F
July 69.4 °F
September 66.8 °F
The most cold months:
January 34.1 °F
February 35.3 °F
December 39.6 °F
The most rainy months:
April 3 days
October 3 days
July 2 days
The most windy months:
March 11 mph
January 11 mph
December 10 mph

Plymouth on the Weather Map

USA Resorts:
NAME
F°
Boston +58
Chicago +58
Hawaii +80
Houston +74
Las Vegas +64
Los Angeles +74
Maui +72
Miami +82
New York +62
Panama City Beach +64
San Diego +74
San Francisco +60
Santa Monica +72
Tampa +72
Washington +58
24 Hours Weather Forecast
Plymouth
Local time: 00:48
27 oct, tuesday
0300 52°F
S
11 mph
0600 50°F
SW
9 mph
0900 50°F
SW
11 mph
1200 50°F
SW
9 mph
1500 50°F
SW
7 mph
1800 44°F
W
5 mph
2100 42°F
N
4 mph
28 oct, wednesday
0000 40°F
NE
4 mph