Weather in Swansea in December
In an average December, Swansea 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 | 5 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
2010-12-19
Low
Highest
13°C
2015-12-19
Lowest
-4°C
2010-12-25
Feels-like
Highest
13°C
2015-12-19
Lowest
-11°C
1981-12-13
Humidity
Highest
10.3 g/m³
2015-12-19
Lowest
3.4 g/m³
1981-12-12
Wind
Highest
75 km/h
1993-12-09
Lowest
7 km/h
2018-12-27
Gust
Highest
124 km/h
1994-12-08
Lowest
13 km/h
2018-12-27
Precip
Wettest
266 mm
2015
Driest
44 mm
2010
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