Weather in London in August
August in London is mild with average temperatures around 17.4°C (63.3°F). Moderate rainfall of 66mm spread over 12 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
22.3°C
72.1°F
Low
12.5°C
54.5°F
Precipitation
66 mm
2.6 inches
~12 rainy days
Conditions
Humidity
78%
Comparison to Adjacent Months
August is 2.5°C warmer than September, 21mm wetter than September.