Avg high
17°C
Avg low
8°C
Rainfall
56 mm
Rain days
11.2
Sunshine
10.8 h/day
Daylight
15.4 h
What to pack for London in May
- long sleeves and a warm layer
- a medium jacket
- a compact umbrella or rain shell — rain is frequent
Humidity averages 73%; max daily wind around 21 km/h.
How May compares
Best months in London: June–August. See the full best time to visit London guide.
London in May: the details
In May, London sees average daytime highs of 17°C (63°F) and overnight lows of 8°C (47°F). Rainfall totals roughly 56 mm across 11.2 rainy days, and the sun shines about 10.8 hours per day with 15.4 hours of daylight mid-month. Relative humidity averages 73%.
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for London, United Kingdom (51.51, -0.13) — see our methodology. Actual conditions vary year to year.
Where should you go next month?
Get one email a month with the destinations at their seasonal best. Double opt-in, unsubscribe anytime.