Southampton in December: Weather, Average temperature and Climate
Weather in Southampton in December 2026
- December is usually the wettest month of the year in Southampton;
Average weather
Average temperature in Southampton in December
The expected average maximum temperature in December is +10°C with a maximum of +14°C and a minimum of -2°C.
The average maximum temperature goes up 50% by the end of the month, compared with the beginning of the month, from +3°C to +11°C.
Is Southampton warm or cold in December?
Southampton is typically cool in December.
Maximum temperatures go down compared to the previous month from +11°C to +9°C. The minimum temperature also goes down from +6°C to +4°C.
Pack a sweater and a jacket as there will be cooler temperatures.
December is one of the coolest months in Southampton, here is the comparison with other months:
Climate in Southampton in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | +11°C | +9°C | +8°C | |||
| Min. temperature | -6°C | -10°C | -9°C | |||
| Max. temperature | +17°C | +15°C | +14°C | |||
| Rainfall | 78 mm | 80 mm | 72 mm | |||
| Wind | 4 m/s | 4 m/s | 5 m/s | |||
| Humidity | 87% | 88% | 87% | |||
| Air pressure | 1013 HPa | 1014 HPa | 1015 HPa | |||
☀️ | Sunny days | 3 | 2 | 2 | ||
☁️ | Cloudy days | 11 | 12 | 12 | ||
🌧️ | Rainy days | 16 | 15 | 16 | ||
❄️ | Snowy days | 0 | 1 | 1 | ||
| Our opinion | OK | OK | Bad | |||
December weather is still as ok as in November. It’s getting colder in December. From +11°C in the day, the average maximum temperature lowers to +9°C. Prepare for more rain. Average rainfall goes from 78 mm to 80 mm. Humidity rises from 87% to 88%. The average wind speed doesn’t change much during December, staying around 4 m/s. The days becoming less sunny, going from 3 sunny days in November to 2 in December.
Next month (January) brings a further decline in the weather.
Wind
The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Southampton is gradually increasing during December, going from 2 m/s to 4 m/s over the course of the month.
Rain
How was the weather last December in Southampton?
Climate Change over Years
The climate in Southampton in December has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+12°C) and the highest in 2022 (+16°C). The driest year was 1990 with only 529 mm of rainfall, and the wettest year was 2020 with 1617 mm.
FAQ
Is December a good time to visit Southampton?
Can you sunbathe in Southampton in December?
Is Southampton rainy in December?
Is it sunny in Southampton in December?
Other cities in United Kingdom
Monthly weather in Southampton
Source of the data
For this page, we’ve looked at the typical weather in Southampton, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
