Southampton Weather in January

January in Southampton brings pleasant temperatures around 21°C (70°F) during the day, dropping to 17°C (63°F) at night, with quite a bit of rainfall expected, averaging around 115 mm (4.5 in) for the month.

Rainfall in Southampton in January

Historically, January sees about 13 days of rain, with a monthly average of 115 mm (4.5 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Southampton in January

If you're visiting Southampton in January, expect highs of 21°C (70°F) and overnight lows around 17°C (63°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights drop to around 17°C (63°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Southampton in January

The month brings about 144 hours of sunlight, offering a comfortable mix of sun and overcast.

If you're looking for dry conditions and comfortable temperatures, January may not be the ideal month to visit Southampton. Our weather planner can help you explore destinations with more pleasant weather conditions.