United Kingdom
London in May: weather & travel advice
This month's data profile
Rain shapes the decision
London in May is climatically well suited to city breaks and active holidays and hiking. The average daily high is around 17 °C. With about 11 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
63/100 · #5
Warmth
#5
Dryness
#7
Sun
#3
Published best categories: none
London · MayPhoto: Colin · CC BY-SA 4.0Climate facts
- Average high
- 17 °C
- Average low
- 7 °C
- Rainy days (est.)
- 11 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 79 %
For your trip planning
May: milder than April, still behind June
In our series, May in London has average daily highs of 17 °C, up from 14 °C in April and below June's 20 °C. Precipitation edges up from April towards June, while the estimated number of rainy days stays the same in all three months. With average lows of 7 °C, a light layer for the mornings is worth packing.
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| April | 14 | 4 | 11 | 46 | 5.1 | 81 | 3.2 | 53 |
| May (selected) | 17 | 7 | 11 | 53 | 6.1 | 79 | 3.1 | 63 |
| June | 20 | 10 | 11 | 57 | 6.7 | 78 | 3.0 | 74 |
How do the previous and next months compare?
Baseline: May (63/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| April | -10 | -3.3 °C | -3 °C | -0.7 | -7 mm | -1 h | +1.9 % | +0.1 m/s |
| June | +11 | +3.2 °C | +3 °C | -0.1 | +3.4 mm | +0.6 h | -1.5 % | -0.2 m/s |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is London in May?
The average daily high is around 17 °C, with an average daily low of about 7 °C.
Does it rain a lot in London in May?
The curated estimate is about 11 rainy days per month, not a directly measured long-term average. Total precipitation averages around 53 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit London?
By the climate score, June, July, August and September are the strongest months for London. May is not among them.