London · August
Run in the morning.
Comfortable average high of 72°F, dipping to 57°F at night. Expect 16 rain days — plan around the radar. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
72° / 57°F
Humidity
74%
Rain days
16/mo
Wind
12 mph
What August feels like in London
Sunrise
05:48
Mid-month average
Sunset
20:20
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in London in August
The kit for August in London: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
August vs the surrounding months
vs July
-1° avg high
0 rain days
London in July →
August
72°F avg high
16 rain days
Best: morning
vs September
+4° avg high
+3 rain days
London in September →
Frequently Asked Questions
What is the best time of day to run in London in August?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in London in August?+
Average high 72°F, average low 57°F.
How does August compare to surrounding months in London?+
Compared to July (avg high 73°F), August is cooler. Compared to September (avg high 68°F), August is warmer.
Does it rain often in London in August?+
Expect about 16 measurable rain days in August, on average.