Caernarfon weather live forecast

Today's maximum temperature in Caernarfon is expected to be 18°C. Select a day from the live weather forecast for Caernarfon, Wales, UK for more weather parameters.

Friday
12th Jun
18

13

5

5
Saturday
13th Jun
17

12

8

6
Sunday
14th Jun
18

11

3

3
Monday
15th Jun
21

13

1

5
Tuesday
16th Jun
19

14

1

3

5-day weather forecast updated at 04:04 on Friday 12th June 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 12th June 2026

Expect mostly cloudy with light rain in Caernarfon, Wales with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 13% chance of some rain and a fresh breeze of 31 kph from the south-west.

18
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
5
UV index (Moderate)
13
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
31
kph wind from SW

Caernarfon weather for Saturday 13th June 2026

Expect broken clouds in Caernarfon, Wales with a maximum temperature of 17°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 27 kph from the west.

17
°C maximum temperature
12
°C minimum temperature
broken clouds
8
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
17
°C wind chill
27
kph wind from W

Caernarfon weather for Sunday 14th June 2026

Expect broken clouds in Caernarfon, Wales with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the north.

18
°C maximum temperature
11
°C minimum temperature
broken clouds
3
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
15
kph wind from N

Caernarfon weather for Monday 15th June 2026

Expect overcast skies in Caernarfon, Wales with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south.

21
°C maximum temperature
13
°C minimum temperature
overcast skies
1
hour of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
18
kph wind from S

Caernarfon weather for Tuesday 16th June 2026

Expect mostly cloudy with light rain in Caernarfon, Wales with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 42% chance of some rain and a moderate breeze of 23 kph from the south-west.