London Weather in May
United Kingdom · Oceanic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
May in London sees average temperatures ranging from a low of 8.4°C (47.1°F) to a high of 17.6°C (63.7°F), with a mean of 13.0°C (55.4°F). Compared to the annual average of 11.5°C (52.7°F), this month is 1.5°C warmer than the yearly norm. Precipitation averages 58.1mm, making it approximately 7.0mm drier than the monthly average of 65.0mm. The city receives an average of 10.8 hours of sunshine per day during May, with relative humidity averaging 73.1%. Wind speeds reach an average maximum of 21.0 km/h. For travelers, this month offers a temperature experience in London, with drier-than-average conditions compared to the rest of the year.
Having spent three winters in London, I can tell you the drizzle never really stops — it just changes intensity. The data says October is wettest, but honestly, it's the persistence rather than volume that gets you. May is my favorite: parks burst into bloom and you'll catch surprising stretches of sunshine between showers. The numbers say June-August is 'best,' but pack a light jacket regardless.
May vs Adjacent Months
| Metric | April | May | June |
|---|---|---|---|
| Mean Temp | 9.2°C (48.6°F) | 13.0°C (55.4°F) | 16.6°C (61.9°F) |
| Rainfall | 40.9mm | 58.1mm | 61.2mm |
| Sunshine | 9.7 hrs | 10.8 hrs | 11.8 hrs |
| Humidity | 72.3% | 73.1% | 71.0% |
| Wind | 21.7 km/h | 21.0 km/h | 20.0 km/h |
| Rainy Days | 13.6 | 17.0 | 16.4 |
| Snowfall | 0.2 cm | 0.0 cm | 0.0 cm |
Seasonal Context
May falls in Spring in the Northern Hemisphere. Spring is a transitional season with temperatures rising from winter lows. For travelers visiting London in May, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in London in May?
The average temperature in London during May ranges from 8.4°C (47.1°F) to 17.6°C (63.7°F), with a mean of 13.0°C (55.4°F).
How much does it rain in London in May?
London receives an average of 58.1mm of precipitation in May, spread across approximately 17.0 rainy days.
What should I pack for London in May?
Based on May weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is May a good time to visit London?
May is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for London
Cities with Similar May Climate (Oceanic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 51.51°, -0.13°. Timezone: Europe/London. Last updated: 2026-07-30.