Caernarfon weather live forecast

Today's maximum temperature in Caernarfon is expected to be 13°C. Select a day from the live weather forecast for Caernarfon, Wales, UK for more weather parameters.

Friday
17th Apr
13

10

4

3
Saturday
18th Apr
12

7

4

3
Sunday
19th Apr
13

5

9

4
Monday
20th Apr
13

4

10

3
Tuesday
21st Apr
13

5

8

3

5-day weather forecast updated at 04:13 on Friday 17th April 2026 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 17th April 2026

Expect mostly cloudy with light rain in Caernarfon, Wales with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 57% chance of some rain and a fresh breeze of 36 kph from the south-west.

13
°C maximum temperature
10
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
3
UV index (Moderate)
57
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
36
kph wind from SW

Caernarfon weather for Saturday 18th April 2026

Expect broken clouds in Caernarfon, Wales with a maximum temperature of 12°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the west.

12
°C maximum temperature
7
°C minimum temperature
broken clouds
4
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
25
kph wind from W

Caernarfon weather for Sunday 19th April 2026

Expect scattered clouds in Caernarfon, Wales with a maximum temperature of 13°C, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the north.

13
°C maximum temperature
5
°C minimum temperature
scattered clouds
9
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
18
kph wind from N

Caernarfon weather for Monday 20th April 2026

Expect scattered clouds in Caernarfon, Wales with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the north-east.

13
°C maximum temperature
4
°C minimum temperature
scattered clouds
10
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
13
°C wind chill
18
kph wind from NE

Caernarfon weather for Tuesday 21st April 2026

Expect broken clouds in Caernarfon, Wales with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the north-east.