Caernarfon weather live forecast

Today's maximum temperature in Caernarfon is expected to be 14°C. Select a day from the live weather forecast for Caernarfon, Wales, UK for more weather parameters.

Thursday
7th May
14

6

5

4
Friday
8th May
15

8

5

4
Saturday
9th May
17

9

3

4
Sunday
10th May
15

7

10

4
Monday
11th May
16

7

2

4

5-day weather forecast updated at 04:03 on Thursday 7th May 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 Thursday 7th May 2026

Expect broken clouds in Caernarfon, Wales with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the south.

14
°C maximum temperature
6
°C minimum temperature
broken clouds
5
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
14
°C wind chill
23
kph wind from S

Caernarfon weather for Friday 8th May 2026

Expect broken clouds in Caernarfon, Wales with a maximum temperature of 15°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north-east.

15
°C maximum temperature
8
°C minimum temperature
broken clouds
5
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
15
°C wind chill
16
kph wind from NE

Caernarfon weather for Saturday 9th May 2026

Expect mostly cloudy with light rain in Caernarfon, Wales with a maximum temperature of 17°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 39% chance of some rain and a moderate breeze of 27 kph from the north-east.

17
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
4
UV index (Moderate)
39
% chance of some rain
<2
mm of rainfall expected
17
°C wind chill
27
kph wind from NE

Caernarfon weather for Sunday 10th May 2026

Expect sunshine and showers in Caernarfon, Wales with a maximum temperature of 15°C, maximum UV of 4 (Moderate) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 17% chance of some rain and a moderate breeze of 24 kph from the north-east.

15
°C maximum temperature
7
°C minimum temperature
sunshine and showers
10
hours of sunshine
4
UV index (Moderate)
17
% chance of some rain
<2
mm of rainfall expected
15
°C wind chill
24
kph wind from NE

Caernarfon weather for Monday 11th May 2026

Expect broken clouds in Caernarfon, Wales with a maximum temperature of 16°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the north.