Southampton is typically cool in January.

Maximum temperatures go down compared to the previous month from +9°C to +8°C. The minimum temperature also goes down from +4°C to +3°C.

Pack a sweater and a jacket as there will be cooler temperatures.

January is the coldest month in Southampton, here is the comparison with other months:

January typically has worse weather conditions compared to December. It’s getting colder in January. From +9°C in the day, the average maximum temperature lowers to +8°C. As January arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 80 mm to 72 mm. It feels drier, as humidity decreases from 88% to 87%. Winds are stronger in comparison to December, going up from 4 m/s to 5 m/s on average. The amount of sunny days stay about the same, averaging 2 sunny days during the month.

But maybe it is worth considering traveling in February as the weather gets better.

The climate in Southampton in January 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.

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.