26.02
thu
thu
Day
39°F
E 11 mph
Precip.
0%
0%
Night
25°F
SE 7 mph
Precip.
0%
0%
27.02
fri
fri
Day
36°F
N 5 mph
Precip.
0%
0%
Night
32°F
NE 7 mph
Precip.
0%
0%
28.02
sat
sat
Day
36°F
N 14 mph
Precip.
0%
0%
Night
36°F
E 9 mph
Precip.
0%
0%
01.03
sun
sun
Day
34°F
SE 9 mph
Precip.
0%
0%
Night
18°F
SE 7 mph
Precip.
0%
0%
02.03
mon
mon
Day
21°F
SE 6 mph
Precip.
0%
0%
Night
14°F
E 6 mph
Precip.
0%
0%
03.03
tue
tue
Day
30°F
NE 10 mph
Precip.
0%
0%
Night
28°F
NE 9 mph
Precip.
47%
47%
04.03
wed
wed
Day
39°F
E 13 mph
Precip.
51%
51%
Night
32°F
E 7 mph
Precip.
0%
0%
sea water
temperature
temperature
| Portsmouth |
monthly
weather
weather
| Portsmouth |
current
weather
weather
| Portsmouth |
14 days
forecast
forecast
| Portsmouth |
Sea water temperature in February, °F
Show year:
2026
2025
2024
The average sea water temperature in February of 2026 was 36.9°F. The highest and lowest sea temperatures during the month were 38.7°F and 34.3°F.
Sea water temperature in March, °F
Show year:
2025
2024
2023
The average sea water temperature in March of 2025 was 38.3°F. The highest and lowest sea temperatures during the month were 39.9°F and 36.7°F.
Air temperature in Portsmouth, °F
Precipitation total in Portsmouth, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Portsmouth
Portsmouth on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Portsmouth
Local time: 16:26
February 26, thursday
1800
34°F
E
7 mph
7 mph
2100
27°F
SE
6 mph
6 mph
February 27, friday
0000
25°F
SE
7 mph
7 mph
0300
25°F
SE
4 mph
4 mph
0600
19°F
S
2 mph
2 mph
0900
25°F
E
2 mph
2 mph
1200
36°F
N
5 mph
5 mph
1500
41°F
NE
6 mph
6 mph
