London Weather Forecast
Check the latest weather for London, UK. Hourly and daily forecasts including rain probability, temperature, and wind conditions.
London has a temperate oceanic climate with mild temperatures year-round. Rainfall is frequent but usually light. Summers are warm, winters are cool.
May to September offers the warmest and driest weather, with long daylight hours perfect for sightseeing.
Always carry an umbrella or rain jacket. Layered clothing works best due to changeable weather. Light jacket even in summer.
Monthly climate baseline (1991-2020)
Use this modeled baseline to compare seasons, not as a forecast for a specific trip.
In this modeled baseline, Jul has London's highest average high (21.9°C / 71°F), Feb has the lowest average low (3.0°C / 37°F), and Nov has the most average precipitation (62.7 mm / 2.5 in).
| Month | Average high | Average low | Monthly precipitation |
|---|---|---|---|
| Jan | 7.6°C / 46°F | 3.1°C / 38°F | 54.8 mm / 2.2 in |
| Feb | 8.0°C / 46°F | 3.0°C / 37°F | 45.3 mm / 1.8 in |
| Mar | 10.5°C / 51°F | 4.3°C / 40°F | 42.3 mm / 1.7 in |
| Apr | 13.5°C / 56°F | 6.0°C / 43°F | 48.9 mm / 1.9 in |
| May | 16.7°C / 62°F | 8.9°C / 48°F | 52.1 mm / 2.1 in |
| Jun | 19.6°C / 67°F | 11.8°C / 53°F | 55.6 mm / 2.2 in |
| Jul | 21.9°C / 71°F | 13.9°C / 57°F | 54.2 mm / 2.1 in |
| Aug | 21.5°C / 71°F | 13.9°C / 57°F | 61.4 mm / 2.4 in |
| Sep | 18.8°C / 66°F | 11.5°C / 53°F | 46.9 mm / 1.8 in |
| Oct | 14.7°C / 58°F | 8.8°C / 48°F | 58.5 mm / 2.3 in |
| Nov | 10.7°C / 51°F | 5.7°C / 42°F | 62.7 mm / 2.5 in |
| Dec | 8.0°C / 46°F | 3.6°C / 38°F | 58.0 mm / 2.3 in |
AnyWeather calculated these monthly values from daily ERA5 reanalysis data for 1991-2020, retrieved through the Open-Meteo Historical Weather API. ERA5 is gridded model-and-observation reanalysis, not a reading from a city-center weather station. Coastlines, elevation, urban heat, and local storms can produce meaningful differences.
How to use this page's data
The current summary and forecast come from weather providers; monthly climate values are calculated from ERA5 reanalysis; best-time and clothing sections are editorial context. Use official local alerts for safety decisions.
See sources, update timing, and limitationsLondon weather decisions for changeable conditions
London often rewards an hourly rather than all-day plan. Rain timing, gusts, cloud breaks, and urban heat can matter more than the daily icon, while conditions at an exposed bridge or park may differ from a sheltered street.
- Rain windows
- Use hourly precipitation timing and keep a flexible indoor option; a daily rain symbol does not mean continuous rain across London.
- Warm spells
- Check the overnight low and official heat warnings as well as the daytime high, especially for long transport journeys and rooms without cooling.
- Wind and winter
- Strong wind can affect exposed walking routes and rail services, while small snow or ice amounts may still disrupt a city not accustomed to them.
What to watch
Heavy rain, wind, thunderstorms, extreme heat, fog, snow, and ice can trigger impact-based warnings. The Met Office is the UK's official weather warning service; read the affected area, timing, likelihood, and impact rather than relying on colour alone.
Official London warnings: Met Office weather warnings for LondonEditorial context reviewed July 16, 2026
Common Questions
Common questions about London weather
When is the best time to visit London?
May to September offers the warmest and driest weather, with long daylight hours perfect for sightseeing.
What is the current weather in London?
Check the provider-supplied current weather summary above for temperature, humidity, wind, and its update time.