Forest Hill weather

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

• Forest Hill weather averages
• Forest Hill weather by month
• Back to Greater London
• Back to England

Forest Hill weather averages

Check the Forest Hill 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 Forest Hill, Greater London, England.

Back to top

Forest Hill weather by month

Check the weather for Forest Hill, 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

Back to top

Forest Hill weather in January

The average maximum daytime temperature in Forest Hill 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 Forest Hill 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
• 80
  80 mm of monthly rainfall

On average 80 mm (3.1 inches) of rain normally falls in Forest Hill during January with rain falling on 16 days of the month.

Back to months

Forest Hill weather in February

The average maximum daytime temperature in Forest Hill 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 Forest Hill 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
• 50
  50 mm of monthly rainfall

On average 50 mm (2 inches) of rain normally falls in Forest Hill during February with rain falling on 13 days of the month.

Back to months

Forest Hill weather in March

The average maximum daytime temperature in Forest Hill 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 4 hours of sunshine a day in Forest Hill during March.

• 10
  10°C max day temperature
• 4
  4 hours of sunshine per day
• 15
  15 days with some rainfall
• 2
  2°C min night temperature
• 58
  58 mm of monthly rainfall

On average 58 mm (2.3 inches) of rain normally falls in Forest Hill during March with rain falling on 15 days of the month.

Back to months

Forest Hill weather in April

The average maximum daytime temperature in Forest Hill 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 Forest Hill during April.

• 12
  12°C max day temperature
• 5
  5 hours of sunshine per day
• 13
  13 days with some rainfall
• 4
  4°C min night temperature
• 53
  53 mm of monthly rainfall

On average 53 mm (2.1 inches) of rain normally falls in Forest Hill during April with rain falling on 13 days of the month.

Back to months

Forest Hill weather in May

The average maximum daytime temperature in Forest Hill 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 Forest Hill 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
• 57
  57 mm of monthly rainfall

On average 57 mm (2.2 inches) of rain normally falls in Forest Hill during May with rain falling on 12 days of the month.

Back to months

Forest Hill weather in June

The average maximum daytime temperature in Forest Hill 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 Forest Hill during June.

• 19
  19°C max day temperature
• 7
  7 hours of sunshine per day
• 11
  11 days with some rainfall
• 9
  9°C min night temperature
• 60
  60 mm of monthly rainfall

On average 60 mm (2.4 inches) of rain normally falls in Forest Hill during June with rain falling on 11 days of the month.

Back to months

Forest Hill weather in July

The average maximum daytime temperature in Forest Hill 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 Forest Hill 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
• 41
  41 mm of monthly rainfall

On average 41 mm (1.6 inches) of rain normally falls in Forest Hill during July with rain falling on 10 days of the month.

Back to months

Forest Hill weather in August

The average maximum daytime temperature in Forest Hill 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 Forest Hill during August.

• 22
  22°C max day temperature
• 6
  6 hours of sunshine per day
• 11
  11 days with some rainfall
• 11
  11°C min night temperature
• 53
  53 mm of monthly rainfall

On average 53 mm (2.1 inches) of rain normally falls in Forest Hill during August with rain falling on 11 days of the month.

Back to months

Forest Hill weather in September

The average maximum daytime temperature in Forest Hill 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 Forest Hill during September.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 12
  12 days with some rainfall
• 9
  9°C min night temperature
• 72
  72 mm of monthly rainfall

On average 72 mm (2.8 inches) of rain normally falls in Forest Hill during September with rain falling on 12 days of the month.

Back to months

Forest Hill weather in October

The average maximum daytime temperature in Forest Hill 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 Forest Hill during October.

• 14
  14°C max day temperature
• 3
  3 hours of sunshine per day
• 14
  14 days with some rainfall
• 7
  7°C min night temperature
• 79
  79 mm of monthly rainfall

On average 79 mm (3.1 inches) of rain normally falls in Forest Hill during October with rain falling on 14 days of the month.

Back to months

Forest Hill weather in November

The average maximum daytime temperature in Forest Hill 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 Forest Hill 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 Forest Hill during November with rain falling on 15 days of the month.

Back to months

Forest Hill weather in December

The average maximum daytime temperature in Forest Hill 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 Forest Hill 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 Forest Hill during December with rain falling on 15 days of the month.

Back to months