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.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Caernarfon's climate page.

Caernarfon Temperature in January

Min Temperature 4°C (39°F)  

Max Temperature 9°C (48°F)  

Chance of Rain 70%  

Precipitation 125 mm (4.9 in)  

Rainy days 21 days  

Sunshine 33 hours *  

Percentage Sunshine *  

* Data from: Bala, the United Kingdom (51 KM, 32 Miles).

What to Wear in Caernarfon in January

Cold weather calls for smart layering in January. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Prepare for significant rainfall with proper waterproof clothing and shoes. With limited sunshine expected, sunglasses aren't a priority for packing.

What To Do in Caernarfon in January

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

4/10

Cycling

4/10

Walking

4/10

Camping

3/10

Outdoor sports

4/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Caernarfon's climate page.

More climate data for Caernarfon

Temperature Rainfall Sunshine

See the full Caernarfon climate overview or explore weather in the United Kingdom.