Portsmouth Weather in January

January in Portsmouth sees daytime temperatures around 1°C (34°F) and lows of -8°C (18°F) at night. As the driest month of the year.

Rainfall in Portsmouth in January

This is the driest month of the year, though the temperatures are on the cooler side. Past climate data indicates that roughly 12 days will see snow/rain, totalling around 86 mm (3.4 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Portsmouth in January

If you're visiting Portsmouth in January, expect highs of 1°C (34°F) and overnight lows around -8°C (18°F). Experience the winter season in January. Cold conditions tend to persist from morning through evening, so be prepared for winter weather. At -8°C (18°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. Prepare for the coldest month of the year by packing warm and cozy winter cloths.

Sunshine in Portsmouth in January

The month experiences a moderate amount of sunlight, with 162 hours of sunshine. This provides a nice balance between sunshine and clouds.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. September typically offers the best weather for Portsmouth.