Caernarfon Weather in January

Caernarfon in January averages 9°C (48°F) during the day and 4°C (39°F) at night. This is part of the winter season, and quite a bit of rainfall is expected this month.

Rainfall in Caernarfon in January

You can typically expect 21 days of rain this month, averaging around 125 mm (4.9 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Caernarfon in January

Daytime temperatures in Caernarfon reach 9°C (48°F) in January, dropping to 4°C (39°F) at night. January is typically considered a winter month. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. With overnight lows of 4°C (39°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets. With temperatures often at their lowest, it is the coldest month of the year. Ideal for indoor activities, be sure to pack warm clothing.

Sunshine in Caernarfon in January

The city usually sees around 33 hours of sunlight, indicating fewer sunny days.

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