Builth Wells weather

The Builth Wells weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Builth Wells, Powys, Wales in 2026/2027.

• Builth Wells weather averages
• Builth Wells weather by month
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Builth Wells weather averages

Check the Builth Wells weather averages for each month of the year including maximum daytime and minimum night-time temperatures, monthly rainfall, number of days with rain and average daily hours of sunshine for Builth Wells, Powys, Wales.

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Builth Wells weather by month

Check the weather for Builth Wells, Powys, Wales for a particular month by selecting from the list below. This gives the best indication of what to expect from the weather months in advance.

• January
• February
• March
• April
• May
• June
• July
• August
• September
• October
• November
• December

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Builth Wells weather in January

The average maximum daytime temperature in Builth Wells in January is a cold 5°C (41°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 1 hours of sunshine a day in Builth Wells during January.

• 5
  5°C max day temperature
• 1
  1 hour of sunshine per day
• 20
  20 days with some rainfall
• 1
  1°C min night temperature
• 137
  137 mm of monthly rainfall

On average 137 mm (5.4 inches) of rain normally falls in Builth Wells during January with rain falling on 20 days of the month.

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Builth Wells weather in February

The average maximum daytime temperature in Builth Wells in February is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 0°C (32°F). You can expect on average 2 hours of sunshine a day in Builth Wells during February.

• 6
  6°C max day temperature
• 2
  2 hours of sunshine per day
• 17
  17 days with some rainfall
• 0
  0°C min night temperature
• 103
  103 mm of monthly rainfall

On average 103 mm (4.1 inches) of rain normally falls in Builth Wells during February with rain falling on 17 days of the month.

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Builth Wells weather in March

The average maximum daytime temperature in Builth Wells in March is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 3 hours of sunshine a day in Builth Wells during March.

• 8
  8°C max day temperature
• 3
  3 hours of sunshine per day
• 19
  19 days with some rainfall
• 2
  2°C min night temperature
• 102
  102 mm of monthly rainfall

On average 102 mm (4 inches) of rain normally falls in Builth Wells during March with rain falling on 19 days of the month.

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Builth Wells weather in April

The average maximum daytime temperature in Builth Wells in April is a cool 11°C (52°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 4 hours of sunshine a day in Builth Wells during April.

• 11
  11°C max day temperature
• 4
  4 hours of sunshine per day
• 16
  16 days with some rainfall
• 3
  3°C min night temperature
• 75
  75 mm of monthly rainfall

On average 75 mm (3 inches) of rain normally falls in Builth Wells during April with rain falling on 16 days of the month.

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Builth Wells weather in May

The average maximum daytime temperature in Builth Wells in May is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 5 hours of sunshine a day in Builth Wells during May.

• 14
  14°C max day temperature
• 5
  5 hours of sunshine per day
• 15
  15 days with some rainfall
• 6
  6°C min night temperature
• 73
  73 mm of monthly rainfall

On average 73 mm (2.9 inches) of rain normally falls in Builth Wells during May with rain falling on 15 days of the month.

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Builth Wells weather in June

The average maximum daytime temperature in Builth Wells in June is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 6 hours of sunshine a day in Builth Wells during June.

• 17
  17°C max day temperature
• 6
  6 hours of sunshine per day
• 15
  15 days with some rainfall
• 8
  8°C min night temperature
• 68
  68 mm of monthly rainfall

On average 68 mm (2.7 inches) of rain normally falls in Builth Wells during June with rain falling on 15 days of the month.

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Builth Wells weather in July

The average maximum daytime temperature in Builth Wells in July is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 5 hours of sunshine a day in Builth Wells during July.

• 19
  19°C max day temperature
• 5
  5 hours of sunshine per day
• 14
  14 days with some rainfall
• 11
  11°C min night temperature
• 56
  56 mm of monthly rainfall

On average 56 mm (2.2 inches) of rain normally falls in Builth Wells during July with rain falling on 14 days of the month.

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Builth Wells weather in August

The average maximum daytime temperature in Builth Wells in August is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 5 hours of sunshine a day in Builth Wells during August.

• 19
  19°C max day temperature
• 5
  5 hours of sunshine per day
• 16
  16 days with some rainfall
• 10
  10°C min night temperature
• 80
  80 mm of monthly rainfall

On average 80 mm (3.1 inches) of rain normally falls in Builth Wells during August with rain falling on 16 days of the month.

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Builth Wells weather in September

The average maximum daytime temperature in Builth Wells in September is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 4 hours of sunshine a day in Builth Wells during September.

• 16
  16°C max day temperature
• 4
  4 hours of sunshine per day
• 16
  16 days with some rainfall
• 8
  8°C min night temperature
• 95
  95 mm of monthly rainfall

On average 95 mm (3.7 inches) of rain normally falls in Builth Wells during September with rain falling on 16 days of the month.

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Builth Wells weather in October

The average maximum daytime temperature in Builth Wells in October is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 3 hours of sunshine a day in Builth Wells during October.

• 12
  12°C max day temperature
• 3
  3 hours of sunshine per day
• 19
  19 days with some rainfall
• 6
  6°C min night temperature
• 106
  106 mm of monthly rainfall

On average 106 mm (4.2 inches) of rain normally falls in Builth Wells during October with rain falling on 19 days of the month.

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Builth Wells weather in November

The average maximum daytime temperature in Builth Wells in November is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 2 hours of sunshine a day in Builth Wells during November.

• 8
  8°C max day temperature
• 2
  2 hours of sunshine per day
• 20
  20 days with some rainfall
• 3
  3°C min night temperature
• 117
  117 mm of monthly rainfall

On average 117 mm (4.6 inches) of rain normally falls in Builth Wells during November with rain falling on 20 days of the month.

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Builth Wells weather in December

The average maximum daytime temperature in Builth Wells in December is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 1 hours of sunshine a day in Builth Wells during December.

• 6
  6°C max day temperature
• 1
  1 hour of sunshine per day
• 20
  20 days with some rainfall
• 2
  2°C min night temperature
• 133
  133 mm of monthly rainfall

On average 133 mm (5.2 inches) of rain normally falls in Builth Wells during December with rain falling on 20 days of the month.

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