Caernarfon weather live forecast

Today's maximum temperature in Caernarfon is expected to be 11°C. Select a day from the live weather forecast for Caernarfon, Wales, UK for more weather parameters.

Monday
15th Dec
11

7

0

0
Tuesday
16th Dec
9

6

3

0
Wednesday
17th Dec
11

7

0

0
Thursday
18th Dec
11

8

0

0
Friday
19th Dec
10

8

3

0

5-day weather forecast updated at 04:04 on Monday 15th 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 Monday 15th December 2025

Expect overcast with light rain in Caernarfon, Wales with a maximum temperature of 11°C and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 86% chance of some rain and a fresh breeze of 35 kph from the north.

11
°C maximum temperature
7
°C minimum temperature
overcast with light rain
0
hours of sunshine
0
UV index (None)
86
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
35
kph wind from N

Caernarfon weather for Tuesday 16th December 2025

Expect broken clouds in Caernarfon, Wales with a maximum temperature of 9°C and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the south.

9
°C maximum temperature
6
°C minimum temperature
broken clouds
3
hours of sunshine
0
UV index (None)
0
mm of rainfall expected
5
°C wind chill
23
kph wind from S

Caernarfon weather for Wednesday 17th December 2025

Expect cloudy with some rain in Caernarfon, Wales with a maximum temperature of 11°C and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 96% chance of some rain and a strong breeze of 44 kph from the south.

11
°C maximum temperature
7
°C minimum temperature
cloudy with some rain
0
hours of sunshine
0
UV index (None)
96
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
44
kph wind from S

Caernarfon weather for Thursday 18th December 2025

Expect overcast with light rain in Caernarfon, Wales with a maximum temperature of 11°C and no hours of bright sunshine. There are 20-30 mm of rainfall expected with 89% chance of some rain and a fresh breeze of 32 kph from the south-west.

11
°C maximum temperature
8
°C minimum temperature
overcast with light rain
0
hours of sunshine
0
UV index (None)
89
% chance of some rain
<30
mm of rainfall expected
0
no heat & humidity
32
kph wind from SW

Caernarfon weather for Friday 19th December 2025

Expect broken clouds in Caernarfon, Wales with a maximum temperature of 10°C and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 35 kph from the south-west.