Caernarfon weather live forecast

Today's maximum temperature in Caernarfon is expected to be 17°C. Select a day from the live weather forecast for Caernarfon, Wales, UK for more weather parameters.

Thursday
1st Oct
17

12

6

2
Friday
2nd Oct
18

15

2

2
Saturday
3rd Oct
16

12

5

2
Sunday
4th Oct
18

11

5

1
Monday
5th Oct
19

14

2

2

5-day weather forecast updated at 04:03 on Thursday 1st October 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 1st October 2026

Expect broken clouds in Caernarfon, Wales with a maximum temperature of 17°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the south.

17
°C maximum temperature
12
°C minimum temperature
broken clouds
6
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
17
°C wind chill
26
kph wind from S

Caernarfon weather for Friday 2nd October 2026

Expect mostly cloudy with rain in Caernarfon, Wales with a maximum temperature of 18°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 85% chance of some rain and a fresh breeze of 35 kph from the south.

18
°C maximum temperature
15
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
2
UV index (Low)
85
% chance of some rain
<10
mm of rainfall expected
18
°C wind chill
35
kph wind from S

Caernarfon weather for Saturday 3rd October 2026

Expect sunshine and showers in Caernarfon, Wales with a maximum temperature of 16°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 26% chance of some rain and a moderate breeze of 21 kph from the north-west.

16
°C maximum temperature
12
°C minimum temperature
sunshine and showers
5
hours of sunshine
2
UV index (Low)
26
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
21
kph wind from NW

Caernarfon weather for Sunday 4th October 2026

Expect sunshine and showers in Caernarfon, Wales with a maximum temperature of 18°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a moderate breeze of 21 kph from the south.

18
°C maximum temperature
11
°C minimum temperature
sunshine and showers
5
hours of sunshine
1
UV index (Low)
25
% chance of some rain
<2
mm of rainfall expected
18
°C wind chill
21
kph wind from S

Caernarfon weather for Monday 5th October 2026

Expect mostly cloudy with light rain in Caernarfon, Wales with a maximum temperature of 19°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 9% chance of some rain and a gentle breeze of 19 kph from the south.