Portsmouth Weather: December
 |
Average Day Temperature: | 37.5°F |
|
Average Night Temperature: | 30.5°F |
|
Sea Water Temperature: | 45.4°F |
|
Number of Sunny Days: | 11 days |
| Sunshine Hours: | 9.0 - 9.2 hours | |
|
Number of Rainy Days: | 3 days |
| Precipitation Totals: | 1.5 in | |
| detailed information | ||
forecast
| Portsmouth |
Temperature
| Portsmouth |
Air Temperature in December, °F
| Day Temperature | Night Temperature |
The highest day temperature in December 2024 was 50°F. The lowest night temperature was 7°F. The average values for day and night temperatures during December were 34.5°F и 27.4°F respectivly.
Portsmouth Water Sea Temperature in December, °F
The average sea surface temperature in December 2024 for Portsmouth was 45.0°F. The maximum and minimum values were 41.6°F and 47.6°F respectively.
| Sunny days | |
| Cloudy days | |
| Gloomy days |
You can expect various weather conditions during December. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in December, in
Precipitation total in December for Portsmouth is 1.5 in. It makes december one of the most rainy months of the year.
The average wind speed in December is 9.3 mph.
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 December is 4.6 hours.
Portsmouth on the Weather Map
| Boston |  |
+44 |
| Chicago |  |
+56 |
| Hawaii |  |
+76 |
| Honolulu | |
+76 |
| Houston | |
+74 |
| Las Vegas |  |
+60 |
| Los Angeles | |
+56 |
| Miami | |
+76 |
| New York | |
+48 |
| Orlando | |
+70 |
| San Diego | |
+60 |
| San Francisco | |
+50 |
| Sarasota | |
+64 |
| Tampa | |
+68 |
| Washington | |
+52 |
| 0300 |  |
40°F | E 7 mph |
| 0600 |  |
40°F | SE 4 mph |
| 0900 |  |
50°F | E 5 mph |
| 1200 | |
58°F | NE 8 mph |
| 1500 |  |
62°F | NE 12 mph |
| 1800 | |
60°F | NE 11 mph |
| 2100 | |
56°F | NE 11 mph |
| 0000 | |
54°F | NE 11 mph |