World Resorts

USA

Portsmouth Weather

Portsmouth 14 Days Forecast

26.02
thu

Day

39°F

E 11 mph

Precip.
0%

Night

25°F

E 7 mph

Precip.
0%

27.02
fri

Day

34°F

NE 2 mph

Precip.
0%

Night

30°F

NE 7 mph

Precip.
0%

28.02
sat

Day

37°F

N 15 mph

Precip.
0%

Night

37°F

E 7 mph

Precip.
0%

01.03
sun

Day

34°F

SE 6 mph

Precip.
100%

Night

16°F

SE 9 mph

Precip.
0%

02.03
mon

Day

21°F

SE 5 mph

Precip.
0%

Night

14°F

SE 6 mph

Precip.
0%

03.03
tue

Day

30°F

NE 11 mph

Precip.
0%

Night

27°F

NE 9 mph

Precip.
0%

04.03
wed

Day

36°F

E 7 mph

Precip.
100%

Night

34°F

E 7 mph

Precip.
0%

05.03
thu

Day

43°F

NW 6 mph

Precip.
0%

Night

23°F

SW 14 mph

Precip.
0%

06.03
fri

Day

25°F

W 12 mph

Precip.
0%

Night

28°F

N 6 mph

Precip.
100%

07.03
sat

Day

36°F

N 3 mph

Precip.
100%

Night

36°F

N 5 mph

Precip.
69%

08.03
sun

Day

54°F

NE 14 mph

Precip.
24%

Night

43°F

E 8 mph

Precip.
0%

09.03
mon

Day

52°F

NW 2 mph

Precip.
0%

Night

55°F

NE 11 mph

Precip.
0%

10.03
tue

Day

66°F

E 12 mph

Precip.
56%

Night

43°F

W 12 mph

Precip.
100%

11.03
wed

Day

36°F

SW 9 mph

Precip.
100%

Night

37°F

NW 4 mph

Precip.
100%

sea water
temperature

Portsmouth

monthly
weather

Portsmouth

current
weather

Portsmouth

7 days
forecast

Portsmouth

January
February
March
April

May
June
July
August

September
October
November
December

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.

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.