Measurements:
°C
°F
Portsmouth
62°F
NW 4 mph
Feels like: 62°F
Precip: 0%
World Resorts USA Portsmouth Weather May Weather in Portsmouth

Portsmouth Weather: May

Average Day Temperature: 64.2°F
Average Night Temperature: 50.2°F
Sea Water Temperature: 49.2°F
Number of Sunny Days: 13 days
Sunshine Hours: 14.1 - 15.1 hours
Number of Rainy Days: 3 days
Precipitation Totals: 0.9 in

Air Temperature in May, °F

Select Year: 2023 2022 2021

The highest day temperature in May 2023 was 86°F. The lowest night temperature was 38°F. The average values for day and night temperatures during May were 65.8°F и 49.5°F respectivly.

Portsmouth Water Sea Temperature in May, °F

Select Year: 2023 2022 2021

The average sea surface temperature in May 2023 for Portsmouth was 50.2°F. The maximum and minimum values were 47.0°F and 54.4°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in May are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Portsmouth is 0.9 in. It makes may one of the least rainy months of the year.

Wind Speed in May, mph

The average wind speed in May is 8.5 mph.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Portsmouth in May is 8.5 hours.

Best Time to Visit Portsmouth
The most sunny months:
November 15 days
September 14 days
May 13 days
The most warm months:
July 80.7 °F
August 80.0 °F
June 74.2 °F
Warmest sea temperature:
August 67.3 °F
July 65.5 °F
September 64.2 °F
The most cold months:
January 32.1 °F
February 32.9 °F
December 38.3 °F
The most rainy months:
July 4 days
December 3 days
August 3 days
The most windy months:
March 10 mph
February 9 mph
December 9 mph

Portsmouth on the Weather Map

USA Resorts:
NAME
Boston +62
Chicago +62
Hawaii +76
Honolulu +76
Houston +78
Las Vegas +76
Los Angeles +68
Miami +80
New York +80
Orlando +86
San Diego +64
San Francisco +54
Sarasota +84
Tampa +84
Washington +88
24 Hours Weather Forecast
Portsmouth
Local time: 10:50
29 apr, monday
1200 62°F
NW
4 mph
1500 62°F
NW
6 mph
1800 56°F
NW
7 mph
2100 50°F
N
4 mph
30 apr, tuesday
0000 48°F
W
3 mph
0300 48°F
SW
7 mph
0600 46°F
W
7 mph
0900 48°F
W
9 mph