This page presents a long range weather forecast for Portsmouth in December as well as other months. You can quickly get a brief overview of the weather to expect in December on a daily basis.
The Portsmouth extended forecast data provided is based on the average values of previous years.
Select a month and click on a day for more information:
Sunday
Dec 1
13° / 6°
Monday
Dec 2
14° / 8°
Tuesday
Dec 3
15° / 9°
Wednesday
Dec 4
13° / 7°
Thursday
Dec 5
13° / 7°
Friday
Dec 6
14° / 8°
Saturday
Dec 7
10° / 7°
Sunday
Dec 8
11° / 6°
Monday
Dec 9
12° / 7°
Tuesday
Dec 10
16° / 9°
Wednesday
Dec 11
15° / 8°
Thursday
Dec 12
11° / 7°
Friday
Dec 13
13° / 8°
Saturday
Dec 14
12° / 6°
Sunday
Dec 15
12° / 5°
Monday
Dec 16
14° / 6°
Tuesday
Dec 17
15° / 8°
Wednesday
Dec 18
12° / 6°
Thursday
Dec 19
8° / 2°
Friday
Dec 20
8° / 2°
Saturday
Dec 21
9° / 4°
Sunday
Dec 22
10° / 5°
Monday
Dec 23
11° / 3°
Tuesday
Dec 24
11° / 3°
Wednesday
Dec 25
12° / 4°
Thursday
Dec 26
11° / 5°
Friday
Dec 27
11° / 6°
Saturday
Dec 28
12° / 8°
Sunday
Dec 29
14° / 8°
Monday
Dec 30
14° / 8°
Tuesday
Dec 31
13° / 8°
Portsmouth 30 days weather forecast
Check out our estimated 30 days weather forecast for Portsmouth, this data is based on the average weather in Portsmouth in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Portsmouth next to the desired date.