World Resorts USA Portsmouth

Portsmouth Monthly Weather Averages

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 78.0°F. The average nightly temp is 66.3°F.

Sea water temperature, °F

The warmest sea temperature usually observed in August. Average daily sea water temperature during this month is 65.4°F.

Precipitation total, in.

September is the month with least precipitations during the year. The average precipitation totals for this month is 0.9 in. The month with most precipitation total is July.

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.

Best time for vacation in Portsmouth

Sunniest months:
November 15 days
September 13 days
October 12 days
Warmest months:
July 78.0 °F
August 76.6 °F
June 72.2 °F
Warmest sea temp:
August 65.3 °F
July 63.4 °F
September 62.4 °F
Coldest months:
January 33.8 °F
February 34.6 °F
December 39.4 °F
Rainiest months:
December 3 days
July 3 days
April 3 days
Windiest months:
March 10.0 mph
February 9.5 mph
December 9.4 mph

Portsmouth on a weather map

Portsmouth
+46°F
SW 14 mph
Feels like: +39°F
Precip.: 0%
Places in USA:
Name
°F
+46°F
+50°F
+75°F
+75°F
+45°F
+57°F
+75°F
+70°F
+46°F
+54°F
+55°F
+70°F
+68°F
+66°F
+34°F
24 Hours Forecast
Portsmouth
Local time: 13:14
November 21, thursday
1500
45°F
SW
17 mph
1800
45°F
SW
16 mph
2100
45°F
SW
17 mph
November 22, friday
0000
45°F
W
19 mph
0300
45°F
W
23 mph
0600
46°F
W
21 mph
0900
48°F
N
14 mph
1200
48°F
N
10 mph
Units of measurement: °C / °F