Weather in Portsmouth in December
In an average December, Portsmouth sees a daily high around 9°C and a low around 6°C, based on 1980–2026 of local climate records.
| Average high | 9°C |
|---|---|
| Typical high range | 5°C to 12°C |
| Average low | 6°C |
| Typical low range | 2°C to 10°C |
| Average daily precipitation | 3 mm |
December records
The most extreme December on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
14°C
1985-12-02
Lowest
0°C
2010-12-02
Low
Highest
13°C
2015-12-16
Lowest
-3°C
1981-12-12
Feels-like
Highest
13°C
2015-12-16
Lowest
-12°C
1981-12-13
Humidity
Highest
10.6 g/m³
1995-12-03
Lowest
3.4 g/m³
1985-12-28
Wind
Highest
73 km/h
2020-12-27
Lowest
5 km/h
2008-12-23
Gust
Highest
125 km/h
2013-12-24
Lowest
10 km/h
2008-12-23
Precip
Wettest
154 mm
2002
Driest
21 mm
2016
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