Climate averages 1991–2020
London weather
in July.
A mild, moderately wet month: the warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a mild month in London: daytime highs average 21.7°C and nights cool to about 13.4°C. By daytime temperature it is the warmest month of the year.
Expect about 54 mm of rain on roughly 11 days, which makes July a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 16 h 08 min on an average July day.
The nearest other city in this atlas is Fulham (6 km away). In July its highs average 21.7°C, about as warm as London, with 54 mm of rain.
Among the 143 cities listed in the United Kingdom, London ranks joint 1st of 143 for the warmest July highs and joint 20th of 143 for the driest July (rainfall, lowest first). The mean July high of those 143 cities is 20.0°C; London is 1.7°C warmer than that mean.
From July to August, average highs fall by 0.3°C to 21.3°C, and monthly rainfall rises from 54 mm to 61 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
London climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.3°C2.1°C | 2.1°C | 55 | 10.9 | 8.48 h |
| February | 7.9°C1.9°C | 1.9°C | 45 | 9.4 | 9.910 h |
| March | 10.4°C3.2°C | 3.2°C | 42 | 10.2 | 11.812 h |
| April | 13.4°C5.0°C | 5.0°C | 49 | 10.9 | 13.814 h |
| May | 16.6°C8.2°C | 8.2°C | 52 | 9.8 | 15.616 h |
| June | 19.5°C11.3°C | 11.3°C | 56 | 10.0 | 16.517 h |
| July, selected | 21.7°C13.4°C | 13.4°C | 54 | 10.6 | 16.116 h |
| August | 21.3°C13.4°C | 13.4°C | 61 | 10.2 | 14.615 h |
| September | 18.5°C11.1°C | 11.1°C | 47 | 9.0 | 12.713 h |
| October | 14.6°C8.3°C | 8.3°C | 58 | 11.2 | 10.711 h |
| November | 10.3°C4.8°C | 4.8°C | 63 | 11.0 | 8.99 h |
| December | 7.6°C2.6°C | 2.6°C | 58 | 11.2 | 7.98 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Fulham in JulyUnited Kingdom · 6 kmHigh 21.7°C · Low 13.5°C · 54 mm rain
- Archway in JulyUnited Kingdom · 7 kmHigh 21.3°C · Low 13.4°C · 54 mm rain
- Walthamstow in JulyUnited Kingdom · 12 kmHigh 21.7°C · Low 13.7°C · 56 mm rain
- Croydon in JulyUnited Kingdom · 14 kmHigh 21.3°C · Low 13.4°C · 56 mm rain
- Barking in JulyUnited Kingdom · 15 kmHigh 21.7°C · Low 13.8°C · 56 mm rain
- Ilford in JulyUnited Kingdom · 15 kmHigh 21.6°C · Low 13.8°C · 56 mm rain
- Enfield Town in JulyUnited Kingdom · 16 kmHigh 21.5°C · Low 13.5°C · 58 mm rain
- Harrow in JulyUnited Kingdom · 16 kmHigh 21.2°C · Low 13.4°C · 54 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for London) is explained once on the London year overview and on the Sources, method and limits page.
Archway, Harrow and Fulham lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.