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.

Tuesday
15th Sep
18

14

4

3
Wednesday
16th Sep
16

13

3

2
Thursday
17th Sep
16

13

5

3
Friday
18th Sep
17

12

1

1
Saturday
19th Sep
18

14

5

3

5-day weather forecast updated at 04:03 on Tuesday 15th September 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 Tuesday 15th September 2026

Expect isolated thunderstorms in Barmouth, Wales with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 75% chance of some rain and a fresh breeze of 38 kph from the west.

18
°C maximum temperature
14
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
3
UV index (Moderate)
75
% chance of some rain
<2
mm of rainfall expected
18
°C wind chill
38
kph wind from W

Barmouth weather for Wednesday 16th September 2026

Expect mostly cloudy with light rain in Barmouth, Wales with a maximum temperature of 16°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 51% chance of some rain and a fresh breeze of 35 kph from the south-west.

16
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
2
UV index (Low)
51
% chance of some rain
<5
mm of rainfall expected
16
°C wind chill
35
kph wind from SW

Barmouth weather for Thursday 17th September 2026

Expect mostly cloudy with rain in Barmouth, Wales with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 69% chance of some rain and a fresh breeze of 37 kph from the west.

16
°C maximum temperature
13
°C minimum temperature
mostly cloudy with rain
5
hours of sunshine
3
UV index (Moderate)
69
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
37
kph wind from W

Barmouth weather for Friday 18th September 2026

Expect mostly cloudy with rain in Barmouth, Wales with a maximum temperature of 17°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 74% chance of some rain and a fresh breeze of 34 kph from the south-west.

17
°C maximum temperature
12
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
1
UV index (Low)
74
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
34
kph wind from SW

Barmouth weather for Saturday 19th September 2026

Expect mostly cloudy with light rain in Barmouth, Wales with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 71% chance of some rain and a fresh breeze of 38 kph from the west.