Weather in Portsmouth in January
In an average January, Portsmouth sees a daily high around 7°C and a low around 2°C, based on 1980–2026 of local climate records.
| Average high | 7°C |
|---|---|
| Typical high range | 3°C to 11°C |
| Average low | 2°C |
| Typical low range | -3°C to 8°C |
| Average daily precipitation | 3 mm |
January records
The most extreme January on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total January accumulation.
High
Highest
14°C
2022-01-01
Lowest
-7°C
1987-01-12
Low
Highest
12°C
2007-01-09
Lowest
-10°C
1987-01-12
Feels-like
Highest
12°C
2007-01-09
Lowest
-18°C
1987-01-12
Humidity
Highest
10.1 g/m³
2022-01-01
Lowest
2.1 g/m³
1987-01-12
Wind
Highest
69 km/h
1990-01-25
Lowest
6 km/h
1987-01-25
Gust
Highest
138 km/h
1990-01-25
Lowest
10 km/h
1987-01-25
Precip
Wettest
154 mm
2014
Driest
15 mm
1997
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