Measurements:
°C
°F
CURRENT WEATHER
14:01
Portsmouth
56°F
NW 11 mph
Feels like: 52°F
Precip: 74%
World Resorts USA Portsmouth Weather

14 Day Weather Forecast

05.14
thu
DAY
58°F
NW 13 mph
precip
0%
NIGHT
50°F
W 14 mph
precip
100%
05.15
fri
DAY
48°F
SW 13 mph
precip
100%
NIGHT
46°F
E 5 mph
precip
0%
05.16
sat
DAY
68°F
NE 7 mph
precip
0%
NIGHT
60°F
NE 11 mph
precip
0%
05.17
sun
DAY
78°F
SE 12 mph
precip
0%
NIGHT
54°F
SW 4 mph
precip
0%
05.18
mon
DAY
66°F
NW 7 mph
precip
0%
NIGHT
56°F
N 6 mph
precip
0%
05.19
tue
DAY
86°F
NE 10 mph
precip
0%
NIGHT
72°F
NE 8 mph
precip
0%
05.20
wed
DAY
84°F
E 12 mph
precip
24%
NIGHT
64°F
E 11 mph
precip
0%
05.21
thu
DAY
68°F
E 13 mph
precip
0%
NIGHT
50°F
NE 4 mph
precip
0%
05.22
fri
DAY
56°F
W 9 mph
precip
28%
NIGHT
46°F
SW 16 mph
precip
100%
05.23
sat
DAY
46°F
SW 16 mph
precip
100%
NIGHT
46°F
S 8 mph
precip
100%
05.24
sun
DAY
58°F
SW 14 mph
precip
0%
NIGHT
44°F
NE 2 mph
precip
0%
05.25
mon
DAY
68°F
NE 2 mph
precip
0%
NIGHT
60°F
SE 4 mph
precip
0%
05.26
tue
DAY
68°F
N 3 mph
precip
0%
NIGHT
60°F
E 5 mph
precip
0%
05.27
wed
DAY
64°F
N 5 mph
precip
100%
NIGHT
54°F
N 4 mph
precip
100%

Portsmouth Sea Water Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Portsmouth was 48.6°F. The maximum and minimum values were 42.4°F and 52.6°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 32.1 °F
December 36.4 °F
The most rainy months:
July 3 days
August 2 days
October 2 days
The most windy months:
January 9 mph
March 9 mph
November 9 mph
more details
USA Resorts:
NAME
F°
Boston +56
Chicago +56
Hawaii +78
Honolulu +78
Houston +98
Las Vegas +102
Los Angeles +76
Maui +72
Miami +90
Miami Beach +92
New York +70
San Diego +72
San Francisco +72
Sarasota +96
Tampa +96
all resorts
24 Hours Weather Forecast
Portsmouth
Local time: 14:01
14 may, thursday
1500 56°F
NW
11 mph
1800 54°F
W
10 mph
2100 52°F
W
9 mph
15 may, friday
0000 50°F
W
14 mph
0300 48°F
W
12 mph
0600 48°F
W
9 mph
0900 48°F
SW
11 mph
1200 48°F
SW
13 mph