When to go to London: temperature month by month
In London the average temperature goes from 4 °C in January to 18 °C in July. The months when the average is between 15 and 24 °C, generally pleasant for a full day out, are: June, July, August, September.
- January4 °C · very cold
- February4 °C · very cold
- March6 °C · cool
- April9 °C · cool
- May12 °C · cool
- June16 °C · pleasant
- July18 °C · pleasant
- August17 °C · pleasant
- September15 °C · pleasant
- October11 °C · cool
- November7 °C · cool
- December5 °C · cool
- Very cold: below 5 °C
- Cool: 5 to 14 °C
- Pleasant: 15 to 24 °C
- Hot: 25 to 29 °C
- Very hot: 30 °C or more
This is only the average temperature of the month. We do not show rain, wind or crowds: check the forecast close to your trip and the opening hours of the places.
Going to London?
Pick your dates and build the itinerary, map, budget and bookings in one place, and plan together with whoever is going with you.
Plan this tripSee the London attractions guide
Long-term averages calculated from NASA data (POWER project, MERRA-2 reanalysis), on grid cells of about 50 km: they can differ by a degree or two from a weather station and are not a forecast. These data were obtained from the NASA Langley Research Center POWER Project funded through the NASA Earth Science Directorate Applied Science Program.