29.06
mon
mon
Day
81°F
W 7 mph
Precip.
3%
3%
Night
63°F
NE 6 mph
Precip.
7%
7%
30.06
tue
tue
Day
82°F
N 6 mph
Precip.
2%
2%
Night
73°F
NE 11 mph
Precip.
6%
6%
01.07
wed
wed
Day
91°F
E 11 mph
Precip.
10%
10%
Night
70°F
SW 1 mph
Precip.
43%
43%
02.07
thu
thu
Day
90°F
N 1 mph
Precip.
9%
9%
Night
77°F
E 5 mph
Precip.
7%
7%
03.07
fri
fri
Day
91°F
SE 7 mph
Precip.
3%
3%
Night
73°F
SE 4 mph
Precip.
10%
10%
04.07
sat
sat
Day
82°F
N 6 mph
Precip.
36%
36%
Night
79°F
E 7 mph
Precip.
7%
7%
05.07
sun
sun
Day
84°F
SE 9 mph
Precip.
4%
4%
Night
63°F
N 3 mph
Precip.
15%
15%
sea water
temperature
temperature
| Portsmouth |
monthly
weather
weather
| Portsmouth |
current
weather
weather
| Portsmouth |
14 days
forecast
forecast
| Portsmouth |
Sea water temperature in June, °F
Show year:
2026
2025
2024
The average sea water temperature in June of 2026 was 60.5°F. The highest and lowest sea temperatures during the month were 66.2°F and 51.6°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 63.1°F. The highest and lowest sea temperatures during the month were 67.8°F and 60.6°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: 18:14
June 29, monday
2100
68°F
N
5 mph
5 mph
June 30, tuesday
0000
63°F
NE
6 mph
6 mph
0300
61°F
E
5 mph
5 mph
0600
61°F
NE
4 mph
4 mph
0900
73°F
NE
6 mph
6 mph
1200
82°F
N
6 mph
6 mph
1500
82°F
N
9 mph
9 mph
1800
81°F
N
7 mph
7 mph
