Builth Wells weather live forecast

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

Sunday
30th Aug
18

13

3

3
Monday
31st Aug
16

12

4

3
Tuesday
1st Sep
20

11

2

2
Wednesday
2nd Sep
19

15

0

3
Thursday
3rd Sep
20

14

3

4

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

More about Builth Wells

Builth Wells by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Wales

Spabreaks.com promo code: 8% off bookings & vouchers

Exclusive

Save 8% on spa breaks, spa days & gift vouchers
Check out latest offers on over 550 spas across the UK
A guaranteed experience to suit your budget & occasion

Show discount code

******SB8

Redeem Spabreaks.com discount code >>

Expires at 23:59 on Thursday 31st Dec 2026 · View all Spabreaks.com offers

Spa break finder

Destination

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

Builth Wells weather forecast by day

Below are the detailed weather forecasts for Builth Wells for the next 5 days.

Builth Wells weather for Sunday 30th August 2026

Expect isolated thunderstorms in Builth Wells, Wales with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 98% chance of some rain and a moderate breeze of 22 kph from the south-west.

18
°C maximum temperature
13
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
3
UV index (Moderate)
98
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
22
kph wind from SW

Builth Wells weather for Monday 31st August 2026

Expect broken clouds in Builth Wells, Wales with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the north-west.

16
°C maximum temperature
12
°C minimum temperature
broken clouds
4
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
25
kph wind from NW

Builth Wells weather for Tuesday 1st September 2026

Expect mostly cloudy with light rain in Builth Wells, Wales with a maximum temperature of 20°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 37% chance of some rain and a moderate breeze of 25 kph from the south-west.

20
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
2
UV index (Low)
37
% chance of some rain
<2
mm of rainfall expected
20
°C wind chill
25
kph wind from SW

Builth Wells weather for Wednesday 2nd September 2026

Expect mostly cloudy with light rain in Builth Wells, Wales with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 80% chance of some rain and a moderate breeze of 28 kph from the south-west.

19
°C maximum temperature
15
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
3
UV index (Moderate)
80
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
28
kph wind from SW

Builth Wells weather for Thursday 3rd September 2026

Expect broken clouds in Builth Wells, Wales with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the south-west.