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
The warmest month in Portsmouth is july. The average daily temp is 77.7°F. The average nightly temp is 66.4°F.
Sea water temperature, °F
The warmest sea temperature usually observed in August. Average daily sea water temperature during this month is 65.6°F.
Precipitation total, in.
Number of rainy days
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
Sunny, partly cloudy and cloudy days
Average sunny hours
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
Places in USA:
Name
°F
24 Hours Forecast
Portsmouth
Local time: 07:17
May 15, wednesday
0900
59°F
NE
4 mph
4 mph
1200
61°F
NE
5 mph
5 mph
1500
61°F
NE
3 mph
3 mph
1800
61°F
NE
2 mph
2 mph
2100
57°F
E
1 mph
1 mph
May 16, thursday
0000
55°F
N
3 mph
3 mph
0300
55°F
N
1 mph
1 mph
0600
55°F
W
2 mph
2 mph
