Blackheath weather
The Blackheath weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Blackheath, Greater London, England in 2026/2027.
Blackheath weather averages
Check the Blackheath 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 Blackheath, Greater London, England.
Blackheath weather by month
Check the weather for Blackheath, 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.
Blackheath weather in January
The average maximum daytime temperature in Blackheath 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 Blackheath during January.
- 7°C max day temperature
7 - 2 hours of sunshine per day
2 - 16 days with some rainfall
16 - 1°C min night temperature
1 - 77 mm of monthly rainfall
77
On average 77 mm (3 inches) of rain normally falls in Blackheath during January with rain falling on 16 days of the month.
Blackheath weather in February
The average maximum daytime temperature in Blackheath 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 Blackheath during February.
- 7°C max day temperature7
- 2 hours of sunshine per day2
- 13 days with some rainfall
13 - 1°C min night temperature1
- 49 mm of monthly rainfall
49
On average 49 mm (1.9 inches) of rain normally falls in Blackheath during February with rain falling on 13 days of the month.
Blackheath weather in March
The average maximum daytime temperature in Blackheath 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 Blackheath during March.
- 10°C max day temperature
10 - 3 hours of sunshine per day
3 - 14 days with some rainfall14
- 2°C min night temperature2
- 56 mm of monthly rainfall56
On average 56 mm (2.2 inches) of rain normally falls in Blackheath during March with rain falling on 14 days of the month.
Blackheath weather in April
The average maximum daytime temperature in Blackheath 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 Blackheath during April.
- 12°C max day temperature
12 - 5 hours of sunshine per day
5 - 12 days with some rainfall
12 - 4°C min night temperature4
- 52 mm of monthly rainfall52
On average 52 mm (2 inches) of rain normally falls in Blackheath during April with rain falling on 12 days of the month.
Blackheath weather in May
The average maximum daytime temperature in Blackheath 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 Blackheath during May.
- 16°C max day temperature
16 - 6 hours of sunshine per day
6 - 12 days with some rainfall12
- 6°C min night temperature6
- 55 mm of monthly rainfall55
On average 55 mm (2.2 inches) of rain normally falls in Blackheath during May with rain falling on 12 days of the month.
Blackheath weather in June
The average maximum daytime temperature in Blackheath 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 Blackheath during June.
- 19°C max day temperature
19 - 6 hours of sunshine per day6
- 11 days with some rainfall11
- 9°C min night temperature9
- 56 mm of monthly rainfall56
On average 56 mm (2.2 inches) of rain normally falls in Blackheath during June with rain falling on 11 days of the month.
Blackheath weather in July
The average maximum daytime temperature in Blackheath 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 Blackheath during July.
- 22°C max day temperature
22 - 6 hours of sunshine per day6
- 10 days with some rainfall10
- 12°C min night temperature12
- 42 mm of monthly rainfall42
On average 42 mm (1.7 inches) of rain normally falls in Blackheath during July with rain falling on 10 days of the month.
Blackheath weather in August
The average maximum daytime temperature in Blackheath 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 Blackheath during August.
- 22°C max day temperature22
- 6 hours of sunshine per day6
- 10 days with some rainfall10
- 11°C min night temperature11
- 48 mm of monthly rainfall48
On average 48 mm (1.9 inches) of rain normally falls in Blackheath during August with rain falling on 10 days of the month.
Blackheath weather in September
The average maximum daytime temperature in Blackheath 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 Blackheath during September.
- 19°C max day temperature19
- 5 hours of sunshine per day5
- 12 days with some rainfall12
- 9°C min night temperature9
- 75 mm of monthly rainfall75
On average 75 mm (3 inches) of rain normally falls in Blackheath during September with rain falling on 12 days of the month.
Blackheath weather in October
The average maximum daytime temperature in Blackheath 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 Blackheath during October.
- 15°C max day temperature15
- 3 hours of sunshine per day3
- 13 days with some rainfall13
- 7°C min night temperature7
- 80 mm of monthly rainfall80
On average 80 mm (3.1 inches) of rain normally falls in Blackheath during October with rain falling on 13 days of the month.
Blackheath weather in November
The average maximum daytime temperature in Blackheath 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 Blackheath during November.
- 10°C max day temperature10
- 2 hours of sunshine per day2
- 15 days with some rainfall15
- 3°C min night temperature3
- 74 mm of monthly rainfall74
On average 74 mm (2.9 inches) of rain normally falls in Blackheath during November with rain falling on 15 days of the month.
Blackheath weather in December
The average maximum daytime temperature in Blackheath 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 Blackheath during December.
- 8°C max day temperature8
- 1 hour of sunshine per day
1 - 15 days with some rainfall15
- 2°C min night temperature2
- 79 mm of monthly rainfall79
On average 79 mm (3.1 inches) of rain normally falls in Blackheath during December with rain falling on 15 days of the month.