Chepstow weather

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

• Chepstow weather averages
• Chepstow weather by month
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Chepstow weather averages

Check the Chepstow 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 Chepstow, Monmouthshire, Wales.

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Chepstow weather by month

Check the weather for Chepstow, Monmouthshire, 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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Chepstow weather in January

The average maximum daytime temperature in Chepstow in January is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 2 hours of sunshine a day in Chepstow during January.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 19
  19 days with some rainfall
• 1
  1°C min night temperature
• 108
  108 mm of monthly rainfall

On average 108 mm (4.3 inches) of rain normally falls in Chepstow during January with rain falling on 19 days of the month.

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Chepstow weather in February

The average maximum daytime temperature in Chepstow in February is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 2 hours of sunshine a day in Chepstow during February.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 15
  15 days with some rainfall
• 1
  1°C min night temperature
• 85
  85 mm of monthly rainfall

On average 85 mm (3.3 inches) of rain normally falls in Chepstow during February with rain falling on 15 days of the month.

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Chepstow weather in March

The average maximum daytime temperature in Chepstow in March is a cool 10°C (50°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 Chepstow during March.

• 10
  10°C max day temperature
• 4
  4 hours of sunshine per day
• 17
  17 days with some rainfall
• 3
  3°C min night temperature
• 79
  79 mm of monthly rainfall

On average 79 mm (3.1 inches) of rain normally falls in Chepstow during March with rain falling on 17 days of the month.

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Chepstow weather in April

The average maximum daytime temperature in Chepstow in April is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 5 hours of sunshine a day in Chepstow during April.

• 12
  12°C max day temperature
• 5
  5 hours of sunshine per day
• 15
  15 days with some rainfall
• 4
  4°C min night temperature
• 63
  63 mm of monthly rainfall

On average 63 mm (2.5 inches) of rain normally falls in Chepstow during April with rain falling on 15 days of the month.

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Chepstow weather in May

The average maximum daytime temperature in Chepstow in May is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 6 hours of sunshine a day in Chepstow during May.

• 16
  16°C max day temperature
• 6
  6 hours of sunshine per day
• 14
  14 days with some rainfall
• 7
  7°C min night temperature
• 63
  63 mm of monthly rainfall

On average 63 mm (2.5 inches) of rain normally falls in Chepstow during May with rain falling on 14 days of the month.

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Chepstow weather in June

The average maximum daytime temperature in Chepstow in June is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 7 hours of sunshine a day in Chepstow during June.

• 19
  19°C max day temperature
• 7
  7 hours of sunshine per day
• 13
  13 days with some rainfall
• 9
  9°C min night temperature
• 63
  63 mm of monthly rainfall

On average 63 mm (2.5 inches) of rain normally falls in Chepstow during June with rain falling on 13 days of the month.

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Chepstow weather in July

The average maximum daytime temperature in Chepstow in July is a comfortable 21°C (70°F), while the average minimum night-time temperature is a cool 12°C (54°F). You can expect on average 6 hours of sunshine a day in Chepstow during July.

• 21
  21°C max day temperature
• 6
  6 hours of sunshine per day
• 13
  13 days with some rainfall
• 12
  12°C min night temperature
• 54
  54 mm of monthly rainfall

On average 54 mm (2.1 inches) of rain normally falls in Chepstow during July with rain falling on 13 days of the month.

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Chepstow weather in August

The average maximum daytime temperature in Chepstow in August is a comfortable 21°C (70°F), while the average minimum night-time temperature is a cool 12°C (54°F). You can expect on average 6 hours of sunshine a day in Chepstow during August.

• 21
  21°C max day temperature
• 6
  6 hours of sunshine per day
• 14
  14 days with some rainfall
• 12
  12°C min night temperature
• 72
  72 mm of monthly rainfall

On average 72 mm (2.8 inches) of rain normally falls in Chepstow during August with rain falling on 14 days of the month.

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Chepstow weather in September

The average maximum daytime temperature in Chepstow in September is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 5 hours of sunshine a day in Chepstow during September.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 14
  14 days with some rainfall
• 9
  9°C min night temperature
• 81
  81 mm of monthly rainfall

On average 81 mm (3.2 inches) of rain normally falls in Chepstow during September with rain falling on 14 days of the month.

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Chepstow weather in October

The average maximum daytime temperature in Chepstow in October is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 3 hours of sunshine a day in Chepstow during October.

• 14
  14°C max day temperature
• 3
  3 hours of sunshine per day
• 17
  17 days with some rainfall
• 7
  7°C min night temperature
• 92
  92 mm of monthly rainfall

On average 92 mm (3.6 inches) of rain normally falls in Chepstow during October with rain falling on 17 days of the month.

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Chepstow weather in November

The average maximum daytime temperature in Chepstow in November is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 2 hours of sunshine a day in Chepstow during November.

• 10
  10°C max day temperature
• 2
  2 hours of sunshine per day
• 18
  18 days with some rainfall
• 4
  4°C min night temperature
• 91
  91 mm of monthly rainfall

On average 91 mm (3.6 inches) of rain normally falls in Chepstow during November with rain falling on 18 days of the month.

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Chepstow weather in December

The average maximum daytime temperature in Chepstow in December is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 2 hours of sunshine a day in Chepstow during December.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 18
  18 days with some rainfall
• 2
  2°C min night temperature
• 106
  106 mm of monthly rainfall

On average 106 mm (4.2 inches) of rain normally falls in Chepstow during December with rain falling on 18 days of the month.

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