Verdict: Excellent month
London Weather in August
August hits the sweet spot in London — highs around 23°C (73°F), ideal for a full day on foot. Rain is occasional — about 8 wet days in a typical year. Overall, August is one of the best months of the year to be in London.
Average high
23°C / 73°F
Average low
14°C / 57°F
Rain days
~8
Precipitation
49 mm
What to pack for London in August
- Summer clothes, plus one light layer for air-con and evenings
- A packable rain shell or compact umbrella earns its space
- Comfortable walking shoes — every guide on this site assumes you'll use them
August against the rest of the year
Warmest in London: Aug (23°C / 73°F) · Coolest: Jan (8°C / 46°F) · Wettest: Oct (~16 rain days)
8°
2°
Jan
10°
4°
Feb
11°
4°
Mar
14°
5°
Apr
18°
8°
May
21°
12°
Jun
22°
14°
Jul
23°
14°
Aug
20°
12°
Sep
16°
9°
Oct
11°
6°
Nov
9°
4°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)