London Weather in August
United Kingdom · Oceanic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
August in London sees average temperatures ranging from a low of 14.1°C (57.4°F) to a high of 22.8°C (73.0°F), with a mean of 18.4°C (65.1°F). Compared to the annual average of 11.5°C (52.7°F), this month is 6.9°C warmer than the yearly norm. This is the hottest month of the year, reaching 22.8°C (73.0°F) on average. Precipitation averages 48.7mm, making it approximately 16.0mm drier than the monthly average of 65.0mm. The city receives an average of 10.1 hours of sunshine per day during August, with relative humidity averaging 72.8%. Wind speeds reach an average maximum of 20.8 km/h. For travelers, this month offers a hottest month of the year 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.
August vs Adjacent Months
| Metric | July | August | September |
|---|---|---|---|
| Mean Temp | 18.1°C (64.6°F) | 18.4°C (65.1°F) | 16.1°C (61.0°F) |
| Rainfall | 64.6mm | 48.7mm | 70.0mm |
| Sunshine | 11.3 hrs | 10.1 hrs | 8.6 hrs |
| Humidity | 70.9% | 72.8% | 77.8% |
| Wind | 21.0 km/h | 20.8 km/h | 20.0 km/h |
| Rainy Days | 18.2 | 17.0 | 16.0 |
Seasonal Context
August falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting London in August, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in London in August?
The average temperature in London during August ranges from 14.1°C (57.4°F) to 22.8°C (73.0°F), with a mean of 18.4°C (65.1°F).
How much does it rain in London in August?
London receives an average of 48.7mm of precipitation in August, spread across approximately 17.0 rainy days.
What should I pack for London in August?
Based on August weather data, pack layers including light jackets and t-shirts, plus an umbrella.
Is August a good time to visit London?
August is a good time to visit London, with comfortable temperatures and manageable rainfall. However, it is the hottest month — consider early morning or evening activities.
Other Months for London
Cities with Similar August 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.