Measurements:
°C
°F
CURRENT WEATHER
23:08
Portsmouth
20°F
E 13 mph
Feels like: 10°F
Precip: 0%
World Resorts USA Portsmouth Weather

7 Day Weather Forecast

12.12
fri
DAY
26°F
E 19 mph
precip
0%
NIGHT
20°F
E 13 mph
precip
0%
12.13
sat
DAY
30°F
NE 11 mph
precip
0%
NIGHT
28°F
NE 8 mph
precip
0%
12.14
sun
DAY
28°F
SE 9 mph
precip
0%
NIGHT
16°F
SE 16 mph
precip
0%
12.15
mon
DAY
24°F
SE 16 mph
precip
0%
NIGHT
20°F
E 9 mph
precip
66%
12.16
tue
DAY
28°F
E 12 mph
precip
0%
NIGHT
24°F
NE 8 mph
precip
0%
12.17
wed
DAY
36°F
NE 16 mph
precip
0%
NIGHT
36°F
E 9 mph
precip
0%
12.18
thu
DAY
36°F
N 4 mph
precip
100%
NIGHT
40°F
E 14 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 7.5°F. The maximum and minimum values were 5.8°F and 8.8°F respectively.

Portsmouth on the Weather Map

Best Time to Visit Portsmouth
The most sunny months:
November 16 days
October 14 days
September 13 days
The most warm months:
July 81.7 °F
August 80.0 °F
June 75.2 °F
Warmest sea temperature:
August 66.7 °F
July 64.8 °F
September 63.6 °F
The most cold months:
January 31.4 °F
February 32.4 °F
December 37.5 °F
The most rainy months:
July 3 days
December 3 days
April 3 days
The most windy months:
March 9 mph
January 9 mph
February 9 mph
more details