Caernarfon weather live forecast

Today's maximum temperature in Caernarfon is expected to be 52°F. Select a day from the live weather forecast for Caernarfon, Wales, UK for more weather parameters.

Saturday
13th Dec
52

50

1

0
Sunday
14th Dec
54

52

0

0
Monday
15th Dec
52

50

0

0
Tuesday
16th Dec
50

43

2

0
Wednesday
17th Dec
52

43

1

0

5-day weather forecast updated at 04:06 on Friday 12th December 2025 GMT

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The 5-day weather forecast for Wales (Caernarfon) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Caernarfon weather forecast by day

Below are the detailed weather forecasts for Caernarfon for the next 5 days.

Caernarfon weather for Saturday 13th December 2025

Expect mostly cloudy with rain in Caernarfon, Wales with a maximum temperature of 52°F and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 61% chance of some rain and a strong breeze of 27 mph from the south-west.

52
°F maximum temperature
50
°F minimum temperature
mostly cloudy with rain
1
hour of sunshine
0
UV index (None)
61
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
27
mph wind from SW

Caernarfon weather for Sunday 14th December 2025

Expect cloudy with some rain in Caernarfon, Wales with a maximum temperature of 54°F and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 78% chance of some rain and a strong breeze of 28 mph from the south.

54
°F maximum temperature
52
°F minimum temperature
cloudy with some rain
0
hours of sunshine
0
UV index (None)
78
% chance of some rain
<20
mm of rainfall expected
54
°F wind chill
28
mph wind from S

Caernarfon weather for Monday 15th December 2025

Expect cloudy with some rain in Caernarfon, Wales with a maximum temperature of 52°F and no hours of bright sunshine. There are 30-40 mm of rainfall expected with 83% chance of some rain and a fresh breeze of 22 mph from the south.

52
°F maximum temperature
50
°F minimum temperature
cloudy with some rain
0
hours of sunshine
0
UV index (None)
83
% chance of some rain
<40
mm of rainfall expected
0
no heat & humidity
22
mph wind from S

Caernarfon weather for Tuesday 16th December 2025

Expect mostly cloudy with rain in Caernarfon, Wales with a maximum temperature of 50°F and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 39% chance of some rain and a gentle breeze of 11 mph from the north-west.

50
°F maximum temperature
43
°F minimum temperature
mostly cloudy with rain
2
hours of sunshine
0
UV index (None)
39
% chance of some rain
<10
mm of rainfall expected
45
°F wind chill
11
mph wind from NW

Caernarfon weather for Wednesday 17th December 2025

Expect mostly cloudy with rain in Caernarfon, Wales with a maximum temperature of 52°F and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 79% chance of some rain and a strong breeze of 26 mph from the south-west.