Barmouth weather live forecast

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

Sunday
30th Aug
18

14

2

2
Monday
31st Aug
17

14

2

2
Tuesday
1st Sep
19

13

3

3
Wednesday
2nd Sep
20

16

1

3
Thursday
3rd Sep
20

16

3

4

5-day weather forecast updated at 04:03 on Sunday 30th August 2026 GMT

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The 5-day weather forecast for Wales (Barmouth) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Barmouth weather forecast by day

Below are the detailed weather forecasts for Barmouth for the next 5 days.

Barmouth weather for Sunday 30th August 2026

Expect isolated thunderstorms in Barmouth, Wales with a maximum temperature of 18°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 95% chance of some rain and a moderate breeze of 25 kph from the south-west.

18
°C maximum temperature
14
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
2
UV index (Low)
95
% chance of some rain
<20
mm of rainfall expected
18
°C wind chill
25
kph wind from SW

Barmouth weather for Monday 31st August 2026

Expect mostly cloudy with rain in Barmouth, Wales with a maximum temperature of 17°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 43% chance of some rain and a moderate breeze of 28 kph from the north-west.

17
°C maximum temperature
14
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
2
UV index (Low)
43
% chance of some rain
<10
mm of rainfall expected
17
°C wind chill
28
kph wind from NW

Barmouth weather for Tuesday 1st September 2026

Expect mostly cloudy with light rain in Barmouth, Wales with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 63% chance of some rain and a fresh breeze of 29 kph from the south-west.

19
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
3
UV index (Moderate)
63
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
29
kph wind from SW

Barmouth weather for Wednesday 2nd September 2026

Expect cloudy with some rain in Barmouth, Wales with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 91% chance of some rain and a fresh breeze of 36 kph from the south-west.

20
°C maximum temperature
16
°C minimum temperature
cloudy with some rain
1
hour of sunshine
3
UV index (Moderate)
91
% chance of some rain
<20
mm of rainfall expected
20
°C wind chill
36
kph wind from SW

Barmouth weather for Thursday 3rd September 2026

Expect mostly cloudy with light rain in Barmouth, Wales with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 71% chance of some rain and a moderate breeze of 28 kph from the south-west.