World Resorts USA Portsmouth Weather

Portsmouth weather in December

Weather in Portsmouth: December

Average day temperature: 39.4°F
Average night temperature: 33.2°F
Sea water temperature: 45.9°F
Number of sunny days: 10 days
Day length: 9.0 - 9.2 hours
Number of rainy days: 3 days
Precipitation totals: 1.8 in.

Air temperature in December, °F

Show year:
2023
2022
2021

The highest day temperature during December of 2023 was 55°F. At the same time the lowest night temperature was 23°F. Day and night temperature averages during December were 40.7°F and 35.8°F.

Sea water temperature in Portsmouth in December, °F

Show year:
2023
2022
2021

The average sea water temperature in December of 2023 was 46.0°F. The highest and lowest sea temperatures during the month were 48.9°F and 42.8°F.

Sunny, partly cloudy and cloudy days

Number of sunny, partly cloudy and cloudy days in December is almost equal.

Precipitation total in December, in.

Precipitation total value in Portsmouth in December is 1.8 in. Other months of the year show relatively similar values.

Wind speed in December, mph

The average wind speed value in December is 9.4 mph It makes December one of the most windy months of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 4.4.

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: 13:26
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