Charlton weather

The Charlton weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Charlton, Greater London, England in 2026/2027.

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Charlton weather averages

Check the Charlton 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 Charlton, Greater London, England.

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Charlton weather by month

Check the weather for Charlton, Greater London, England 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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Charlton weather in January

The average maximum daytime temperature in Charlton 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 Charlton during January.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 16
  16 days with some rainfall
• 1
  1°C min night temperature
• 77
  77 mm of monthly rainfall

On average 77 mm (3 inches) of rain normally falls in Charlton during January with rain falling on 16 days of the month.

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Charlton weather in February

The average maximum daytime temperature in Charlton 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 Charlton during February.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 13
  13 days with some rainfall
• 1
  1°C min night temperature
• 49
  49 mm of monthly rainfall

On average 49 mm (1.9 inches) of rain normally falls in Charlton during February with rain falling on 13 days of the month.

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Charlton weather in March

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

• 10
  10°C max day temperature
• 3
  3 hours of sunshine per day
• 14
  14 days with some rainfall
• 2
  2°C min night temperature
• 56
  56 mm of monthly rainfall

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

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Charlton weather in April

The average maximum daytime temperature in Charlton 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 Charlton during April.

• 12
  12°C max day temperature
• 5
  5 hours of sunshine per day
• 12
  12 days with some rainfall
• 4
  4°C min night temperature
• 52
  52 mm of monthly rainfall

On average 52 mm (2 inches) of rain normally falls in Charlton during April with rain falling on 12 days of the month.

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Charlton weather in May

The average maximum daytime temperature in Charlton in May is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 6 hours of sunshine a day in Charlton during May.

• 16
  16°C max day temperature
• 6
  6 hours of sunshine per day
• 12
  12 days with some rainfall
• 6
  6°C min night temperature
• 55
  55 mm of monthly rainfall

On average 55 mm (2.2 inches) of rain normally falls in Charlton during May with rain falling on 12 days of the month.

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Charlton weather in June

The average maximum daytime temperature in Charlton 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 6 hours of sunshine a day in Charlton during June.

• 19
  19°C max day temperature
• 6
  6 hours of sunshine per day
• 11
  11 days with some rainfall
• 9
  9°C min night temperature
• 56
  56 mm of monthly rainfall

On average 56 mm (2.2 inches) of rain normally falls in Charlton during June with rain falling on 11 days of the month.

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Charlton weather in July

The average maximum daytime temperature in Charlton in July is a warm 22°C (72°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 Charlton during July.

• 22
  22°C max day temperature
• 6
  6 hours of sunshine per day
• 10
  10 days with some rainfall
• 12
  12°C min night temperature
• 42
  42 mm of monthly rainfall

On average 42 mm (1.7 inches) of rain normally falls in Charlton during July with rain falling on 10 days of the month.

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Charlton weather in August

The average maximum daytime temperature in Charlton in August is a warm 22°C (72°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 6 hours of sunshine a day in Charlton during August.

• 22
  22°C max day temperature
• 6
  6 hours of sunshine per day
• 10
  10 days with some rainfall
• 11
  11°C min night temperature
• 48
  48 mm of monthly rainfall

On average 48 mm (1.9 inches) of rain normally falls in Charlton during August with rain falling on 10 days of the month.

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Charlton weather in September

The average maximum daytime temperature in Charlton in September 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 5 hours of sunshine a day in Charlton during September.

• 19
  19°C max day temperature
• 5
  5 hours of sunshine per day
• 12
  12 days with some rainfall
• 9
  9°C min night temperature
• 75
  75 mm of monthly rainfall

On average 75 mm (3 inches) of rain normally falls in Charlton during September with rain falling on 12 days of the month.

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Charlton weather in October

The average maximum daytime temperature in Charlton in October is a comfortable 15°C (59°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 Charlton during October.

• 15
  15°C max day temperature
• 3
  3 hours of sunshine per day
• 13
  13 days with some rainfall
• 7
  7°C min night temperature
• 80
  80 mm of monthly rainfall

On average 80 mm (3.1 inches) of rain normally falls in Charlton during October with rain falling on 13 days of the month.

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Charlton weather in November

The average maximum daytime temperature in Charlton in November 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 2 hours of sunshine a day in Charlton during November.

• 10
  10°C max day temperature
• 2
  2 hours of sunshine per day
• 15
  15 days with some rainfall
• 3
  3°C min night temperature
• 74
  74 mm of monthly rainfall

On average 74 mm (2.9 inches) of rain normally falls in Charlton during November with rain falling on 15 days of the month.

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Charlton weather in December

The average maximum daytime temperature in Charlton in December 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 1 hours of sunshine a day in Charlton during December.

• 8
  8°C max day temperature
• 1
  1 hour of sunshine per day
• 15
  15 days with some rainfall
• 2
  2°C min night temperature
• 79
  79 mm of monthly rainfall

On average 79 mm (3.1 inches) of rain normally falls in Charlton during December with rain falling on 15 days of the month.

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