Weather in Portsmouth in January
In an average January, Portsmouth sees a daily high around 8°C and a low around 5°C, based on 1980–2026 of local climate records.
| Average high | 8°C |
|---|---|
| Typical high range | 4°C to 11°C |
| Average low | 5°C |
| Typical low range | 1°C to 9°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
13°C
2007-01-18
Lowest
-5°C
1987-01-12
Low
Highest
12°C
2007-01-09
Lowest
-6°C
1987-01-13
Feels-like
Highest
12°C
2007-01-09
Lowest
-16°C
1987-01-12
Humidity
Highest
9.5 g/m³
2022-01-01
Lowest
2.4 g/m³
1987-01-12
Wind
Highest
87 km/h
1990-01-25
Lowest
7 km/h
2000-01-26
Gust
Highest
135 km/h
1990-01-25
Lowest
12 km/h
2002-01-06
Precip
Wettest
191 mm
2014
Driest
25 mm
1992
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