Measurements:
°C
°F
CURRENT WEATHER
08:27
Portsmouth
18°F
SW 9 mph
Feels like: 8°F
Precip: 61%
World Resorts USA Portsmouth Weather

7 Day Weather Forecast

02.21
sat
DAY
20°F
SW 4 mph
precip
61%
NIGHT
24°F
S 6 mph
precip
0%
02.22
sun
DAY
30°F
SW 12 mph
precip
0%
NIGHT
30°F
SW 19 mph
precip
0%
02.23
mon
DAY
20°F
S 26 mph
precip
100%
NIGHT
22°F
SE 12 mph
precip
100%
02.24
tue
DAY
28°F
SE 11 mph
precip
0%
NIGHT
16°F
E 10 mph
precip
0%
02.25
wed
DAY
28°F
NE 9 mph
precip
70%
NIGHT
30°F
NE 10 mph
precip
0%
02.26
thu
DAY
34°F
NE 2 mph
precip
100%
NIGHT
32°F
SW 9 mph
precip
100%
02.27
fri
DAY
30°F
SW 16 mph
precip
100%
NIGHT
28°F
NE 18 mph
precip
100%

Portsmouth Sea Water Temperature in February, °F

Select Year: 2026 2025 2024

The average sea surface temperature in February 2026 for Portsmouth was 2.7°F. The maximum and minimum values were 1.3°F and 3.7°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 30.9 °F
February 32.4 °F
December 36.4 °F
The most rainy months:
July 3 days
April 3 days
August 2 days
The most windy months:
March 9 mph
January 9 mph
February 9 mph
more details