Weather in Portsmouth in December
In an average December, Portsmouth sees a daily high around 8°C and a low around 3°C, based on 1980–2026 of local climate records.
| Average high | 8°C |
|---|---|
| Typical high range | 3°C to 12°C |
| Average low | 3°C |
| Typical low range | -1°C to 9°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
15°C
2021-12-29
Lowest
-2°C
1981-12-12
Low
Highest
13°C
2015-12-26
Lowest
-11°C
1981-12-12
Feels-like
Highest
13°C
2015-12-26
Lowest
-21°C
1981-12-13
Humidity
Highest
10.5 g/m³
2015-12-16
Lowest
2.6 g/m³
1981-12-12
Wind
Highest
57 km/h
2013-12-24
Lowest
5 km/h
2024-12-26
Gust
Highest
129 km/h
2013-12-24
Lowest
10 km/h
1988-12-31
Precip
Wettest
122 mm
2000
Driest
12 mm
2016
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