As of 18:30 BST

Weather in Builth Wells / Llanfair-ym-Muallt

+24°

Builth Wells / Llanfair-ym-Muallt, Saturday, 8 August, 18:30

Overcast. Feels like 24°C. High 25°C, low 10°C.

Pressure1016 mb

Wind9 mph W

Humidity37%

Visibility6.2 mi

Dew point9°C

Detailed hourly forecast

Ten-day forecast for Builth Wells / Llanfair-ym-Muallt: +9° to +34°, with rain expected on 0 days. The table below breaks each day down by time of day — morning, afternoon, evening and night.

+34°

Best day: 13 August, Thursday

+20°

Worst day: 17 August, Monday

Tap any day below to see the weather morning, afternoon, evening and night.

Sun, 09+12 ° /26 °

Morning

+19°feels +18°

Afternoon

+26°feels +25°

Evening

+21°feels +21°

Night

+15°feels +14°

+26 °

Builth Wells / Llanfair-ym-Muallt, Sunday, 9 August

Overcast. High 26°C, low 12°C.

Pressure1014 mb

Wind9 mph W

Humidity33%

Visibility6.2 mi

Dew point7°C

Mon, 10+12 ° /26 °

Morning

+15°feels +15°

Afternoon

+25°feels +24°

Evening

+21°feels +20°

Night

+14°feels +14°

+26 °

Builth Wells / Llanfair-ym-Muallt, Monday, 10 August

Overcast. High 26°C, low 12°C.

Pressure1021 mb

Wind7 mph NW

Humidity34%

Visibility6.2 mi

Dew point5°C

Tue, 11+9 ° /29 °

Morning

+15°feels +14°

Afternoon

+28°feels +27°

Evening

+25°feels +25°

Night

+10°feels +9°

+29 °

Builth Wells / Llanfair-ym-Muallt, Tuesday, 11 August

Clear sky. High 29°C, low 9°C.

Pressure1024 mb

Wind10 mph SE

Humidity32%

Visibility6.2 mi

Dew point7°C

Wed, 12+12 ° /33 °

Morning

+17°feels +16°

Afternoon

+31°feels +29°

Evening

+30°feels +28°

Night

+14°feels +13°

+33 °

Builth Wells / Llanfair-ym-Muallt, Wednesday, 12 August

Overcast. High 33°C, low 12°C.

Pressure1022 mb

Wind10 mph SE

Humidity22%

Visibility6.2 mi

Dew point4°C

Thu, 13+16 ° /34 °

Morning

+22°feels +21°

Afternoon

+32°feels +30°

Evening

+24°feels +24°

Night

+17°feels +17°

+34 °

Builth Wells / Llanfair-ym-Muallt, Thursday, 13 August

Clear sky. High 34°C, low 16°C.

Pressure1017 mb

Wind16 mph W

Humidity15%

Visibility—

Dew point2°C

Fri, 14+15 ° /28 °

Morning

+20°feels +20°

Afternoon

+27°feels +27°

Evening

+22°feels +22°

Night

+16°feels +16°

+28 °

Builth Wells / Llanfair-ym-Muallt, Friday, 14 August

Partly cloudy. High 28°C, low 15°C.

Pressure1016 mb

Wind16 mph W

Humidity46%

Visibility—

Dew point14°C

Sat, 15+15 ° /23 °

0.5

Morning

+18°feels +18°

Afternoon

+22°feels +22°

Evening

+21°feels +21°

Night

+16°feels +15°

+23 °

Builth Wells / Llanfair-ym-Muallt, Saturday, 15 August

Light rain. High 23°C, low 15°C.

Pressure1017 mb

Wind8 mph NW

Humidity59%

Visibility—

Dew point13°C

Sun, 16+14 ° /25 °

0.4

Morning

+17°feels +17°

Afternoon

+22°feels +21°

Evening

+19°feels +19°

Night

+14°feels +14°

+25 °

Builth Wells / Llanfair-ym-Muallt, Sunday, 16 August

Light rain. High 25°C, low 14°C.

Pressure1014 mb

Wind14 mph W

Humidity42%

Visibility—

Dew point8°C

Mon, 17+12 ° /20 °

0.4

Morning

+16°feels +16°

Afternoon

+19°feels +19°

Evening

+17°feels +16°

Night

+12°feels +12°

+20 °

Builth Wells / Llanfair-ym-Muallt, Monday, 17 August

Light rain. High 20°C, low 12°C.

Pressure1013 mb

Wind18 mph NW

Humidity65%

Visibility—

Dew point12°C

Forecast questions

How accurate is a 10-day forecast?

The first 3–5 days are the most dependable — usually within 1–2 degrees. From day 6 to 10 the models show the trend: the direction of change is right more often than the exact figures.

What does the time-of-day table show?

Temperature in Builth Wells / Llanfair-ym-Muallt at around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime temperature against expected rainfall: a warm, dry day scores highest.