Caernarfon weather live forecast

Today's maximum temperature in Caernarfon is expected to be 10°C. Select a day from the live weather forecast for Caernarfon, Wales, UK for more weather parameters.

Friday
12th Dec
10

7

3

0
Saturday
13th Dec
11

10

1

0
Sunday
14th Dec
12

11

0

0
Monday
15th Dec
11

10

0

0
Tuesday
16th Dec
10

6

2

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 Friday 12th December 2025

Expect sunshine and showers in Caernarfon, Wales with a maximum temperature of 10°C and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 20% chance of some rain and a moderate breeze of 22 kph from the south-west.

10
°C maximum temperature
7
°C minimum temperature
sunshine and showers
3
hours of sunshine
0
UV index (None)
20
% chance of some rain
<10
mm of rainfall expected
7
°C wind chill
22
kph wind from SW

Caernarfon weather for Saturday 13th December 2025

Expect mostly cloudy with rain in Caernarfon, Wales with a maximum temperature of 11°C 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 44 kph from the south-west.

11
°C maximum temperature
10
°C 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
44
kph wind from SW

Caernarfon weather for Sunday 14th December 2025

Expect cloudy with some rain in Caernarfon, Wales with a maximum temperature of 12°C 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 45 kph from the south.

12
°C maximum temperature
11
°C minimum temperature
cloudy with some rain
0
hours of sunshine
0
UV index (None)
78
% chance of some rain
<20
mm of rainfall expected
12
°C wind chill
45
kph wind from S

Caernarfon weather for Monday 15th 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 30-40 mm of rainfall expected with 83% chance of some rain and a fresh breeze of 36 kph from the south.

11
°C maximum temperature
10
°C 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
36
kph wind from S

Caernarfon weather for Tuesday 16th December 2025

Expect mostly cloudy with rain in Caernarfon, Wales with a maximum temperature of 10°C 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 17 kph from the north-west.