Measurements:
°C
°F
Portsmouth
48°F
NE 9 mph
Feels like: 44°F
Precip: 0%
World Resorts USA Portsmouth Weather

Portsmouth Sea Water Temperature

Current Sea Water Temperature:
+51.0°F
Maximum Sea Water Temperature in November: 57.2°F
Minimum Sea Water Temperature in November: 45.8°F
Average water temperature in November: 51.7°F

Sea Water Temperature for the Last 10 Days:

November 05 51.0°F October 31 54.4°F
November 04 51.8°F October 30 54.6°F
November 03 53.6°F October 29 54.8°F
November 02 54.4°F October 28 54.8°F
November 01 53.8°F October 27 55.8°F

When is the Warmest Sea for Portsmouth?

According to our data for the last three years for Portsmouth 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: 2024 2023 2022

The average sea surface temperature in August 2024 for Portsmouth was 65.9°F. The maximum and minimum values were 63.2°F and 68.4°F respectively.

Sea Water Temperature in July

Select Year: 2024 2023 2022

The average sea surface temperature in July 2024 for Portsmouth was 62.3°F. The maximum and minimum values were 57.8°F and 66.4°F respectively.

Sea Water Temperature in September

Select Year: 2024 2023 2022

The average sea surface temperature in September 2024 for Portsmouth was 62.4°F. The maximum and minimum values were 59.6°F and 66.6°F respectively.

Best Time to Visit Portsmouth
The most sunny months:
November 15 days
September 13 days
October 12 days
The most warm months:
July 81.1 °F
August 79.6 °F
June 74.7 °F
Warmest sea temperature:
August 67.0 °F
July 64.9 °F
September 63.8 °F
The most cold months:
January 32.1 °F
February 32.9 °F
December 38.3 °F
The most rainy months:
December 3 days
July 3 days
April 3 days
The most windy months:
March 10 mph
February 9 mph
December 9 mph

Portsmouth on the Weather Map

USA Resorts:
NAME
Boston +52
Chicago +64
Hawaii +80
Honolulu +80
Houston +80
Las Vegas +46
Los Angeles +62
Maui +74
Miami +82
New York +58
San Diego +56
San Francisco +58
Sarasota +74
Tampa +74
Washington +60
24 Hours Weather Forecast
Portsmouth
Local time: 07:26
05 nov, tuesday
0900 52°F
NE
9 mph
1200 62°F
NE
11 mph
1500 70°F
NE
11 mph
1800 66°F
NE
7 mph
2100 62°F
NE
11 mph
06 nov, wednesday
0000 60°F
NE
12 mph
0300 60°F
NE
13 mph
0600 60°F
NE
13 mph