Caernarfon weather live forecast

Today's maximum temperature in Caernarfon is expected to be 8°C. Select a day from the live weather forecast for Caernarfon, Wales, UK for more weather parameters.

Thursday
26th Mar
8

3

2

2
Friday
27th Mar
10

6

4

3
Saturday
28th Mar
9

4

6

2
Sunday
29th Mar
10

5

1

0
Monday
30th Mar
11

7

0

2

5-day weather forecast updated at 04:03 on Thursday 26th March 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 26th March 2026

Expect mostly cloudy with light rain in Caernarfon, Wales with a maximum temperature of 8°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 78% chance of some rain and a moderate breeze of 23 kph from the south.

8
°C maximum temperature
3
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
2
UV index (Low)
78
% chance of some rain
<5
mm of rainfall expected
5
°C wind chill
23
kph wind from S

Caernarfon weather for Friday 27th March 2026

Expect mostly cloudy with rain in Caernarfon, Wales with a maximum temperature of 10°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 72% chance of some rain and a moderate breeze of 22 kph from the north-west.

10
°C maximum temperature
6
°C minimum temperature
mostly cloudy with rain
4
hours of sunshine
3
UV index (Moderate)
72
% chance of some rain
<10
mm of rainfall expected
7
°C wind chill
22
kph wind from NW

Caernarfon weather for Saturday 28th March 2026

Expect sunshine and showers in Caernarfon, Wales with a maximum temperature of 9°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 49% chance of some rain and a fresh breeze of 32 kph from the north-west.

9
°C maximum temperature
4
°C minimum temperature
sunshine and showers
6
hours of sunshine
2
UV index (Low)
49
% chance of some rain
<2
mm of rainfall expected
5
°C wind chill
32
kph wind from NW

Caernarfon weather for Sunday 29th March 2026

Expect mostly cloudy with light rain in Caernarfon, Wales with a maximum temperature of 10°C and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 71% chance of some rain and a strong breeze of 40 kph from the south-west.

10
°C maximum temperature
5
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
0
UV index (None)
71
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
40
kph wind from SW

Caernarfon weather for Monday 30th March 2026

Expect overcast skies in Caernarfon, Wales with a maximum temperature of 11°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the west.