Please click on any column to get detailed information about Portsmouth weather in that particular month. You will get daily weather information for that month for the last several years.
Day & Night air temperature, °F
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
13
26
39
52
65
78
91
104
38.7
49.3
59.8
70.1
76.6
78.0
72.2
62.6
50.5
42.9
34.2
33.2
32.5
39.7
49.7
58.3
64.7
66.3
60.0
50.5
40.8
32.9
26.3
26.7
| Day temperature | Night temperature |
The warmest month in Portsmouth is july. The average daily temp is 78.0°F. The average nightly temp is 66.3°F.
Sea water temperature, °F
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
11
22
33
44
55
66
77
88
45.8
51.3
57.2
62.4
65.4
63.4
57.5
49.6
42.9
39.7
39.1
41.7
The warmest sea temperature usually observed in August. Average daily sea water temperature during this month is 65.4°F.
Precipitation total, in.
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.3
0.6
0.9
1.3
1.6
1.9
2.2
1.5
0.9
1.2
0.9
1.3
1.8
1
0.9
1.5
1.2
0.9
1.2
Number of rainy days
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
4
3
2
2
2
2
3
2
2
3
2
2
3
This chart shows averages for the last three years. It shows medium and heavy rains only, it doesn't show light rains.
Wind speed, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
1
2
3
4
5
6
7
8
9
10
11
9.3
9.3
7.6
7.2
6.5
6.7
7.1
8.1
9.1
9.7
9.6
9.7
Sunny, partly cloudy and cloudy days
1
2
3
4
5
6
7
8
9
10
11
12
0
5
10
15
20
25
30
35
11
6
10
8
9
10
10
9
14
13
11
13
9
9
9
8
13
11
10
10
9
9
9
9
11
15
12
13
9
10
10
12
7
9
9
10
| Cloudy days | Partly cloudy days | Sunny days |
Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
1
2
3
4
5
6
7
8
9
4.6
6.3
6.1
7.1
7.6
8
7.9
8.2
5.9
6
5.3
4.7
Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.
* Charts above show average data for the last 3 years.
sea water
temperature
temperature
| Portsmouth |
14 days
forecast
forecast
| Portsmouth |
current
weather
weather
| Portsmouth |
7 days
forecast
forecast
| Portsmouth |
Best time for vacation in Portsmouth
Portsmouth on a weather map
Leaflet | Tiles © Esri
Places in USA:
Name
°F
24 Hours Forecast
Portsmouth
Local time: 12:39
April 05, saturday
1500
37°F
NW
9 mph
9 mph
1800
36°F
NW
8 mph
8 mph
2100
36°F
NW
8 mph
8 mph
April 06, sunday
0000
37°F
NW
8 mph
8 mph
0300
36°F
W
2 mph
2 mph
0600
36°F
SE
3 mph
3 mph
0900
39°F
E
3 mph
3 mph
1200
45°F
E
4 mph
4 mph
