Measurements:
°C
°F
CURRENT WEATHER
05:11
Portsmouth
8°F
SE 12 mph
Feels like: -10°F
Precip: 0%
World Resorts USA Portsmouth Weather

7 Day Weather Forecast

12.22
sun
DAY
16°F
SE 8 mph
precip
0%
NIGHT
10°F
SE 5 mph
precip
0%
12.23
mon
DAY
16°F
NE 6 mph
precip
0%
NIGHT
22°F
NE 8 mph
precip
0%
12.24
tue
DAY
28°F
SE 6 mph
precip
0%
NIGHT
22°F
S 7 mph
precip
0%
12.25
wed
DAY
28°F
S 6 mph
precip
0%
NIGHT
26°F
SE 4 mph
precip
0%
12.26
thu
DAY
32°F
E 4 mph
precip
0%
NIGHT
26°F
NW 6 mph
precip
0%
12.27
fri
DAY
32°F
SW 11 mph
precip
26%
NIGHT
26°F
S 9 mph
precip
0%
12.28
sat
DAY
30°F
S 7 mph
precip
0%
NIGHT
26°F
S 7 mph
precip
0%

Portsmouth Sea Water Temperature in December, °F

Select Year: 2024 2023 2022

The average sea surface temperature in December 2024 for Portsmouth was 8.1°F. The maximum and minimum values were 7.2°F and 8.8°F respectively.

Portsmouth on the Weather Map

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
more details