Measurements:
°C
°F
Plymouth
54°F
E 11 mph
Feels like: 52°F
Precip: 2%
World Resorts USA Plymouth Weather

Plymouth Sea Water Temperature

Current Sea Water Temperature:
+63.6°F
Maximum Sea Water Temperature in October: 65.4°F
Minimum Sea Water Temperature in October: 55.2°F
Average water temperature in October: 60.6°F

Sea Water Temperature for the Last 10 Days:

October 05 63.6°F September 30 61.2°F
October 04 64.8°F September 29 61.8°F
October 03 62.6°F September 28 62.0°F
October 02 60.0°F September 27 62.4°F
October 01 59.8°F September 26 62.6°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, 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:
October 4 days
April 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 +62
Hawaii +82
Houston +86
Las Vegas +92
Los Angeles +100
Maui +74
Miami +88
Myrtle Beach +70
New York +62
San Diego +84
San Francisco +66
Santa Monica +94
Sarasota +84
Washington +64
24 Hours Weather Forecast
Plymouth
Local time: 20:27
05 oct, monday
2100 54°F
E
11 mph
06 oct, tuesday
0000 48°F
E
8 mph
0300 44°F
E
11 mph
0600 42°F
E
12 mph
0900 46°F
SE
12 mph
1200 56°F
SE
11 mph
1500 60°F
SE
11 mph
1800 54°F
E
8 mph