London weather in July
In July, London has an average high of 23 °C73 °F and an average low of 13 °C55 °F, with about 60 mm2.3 in of precipitation. July is the warmest month of the year and ranks 6th for precipitation.
How July compares with other months
Compared with June, July is 2.2 °C3.9 °F warmer on average. Compared with August, July is about the same temperature and drier by 6 mm0.2 in. Daylight lasts about 16.2 hours around the middle of the month. Average relative humidity is 76% and the average cloud amount 69%.
Is July a good time to visit London?
Yes — July is one of the most comfortable months to visit London by our comfort score, which favours average highs of 21–28 °C, lows above 5 °C, little rain and moderate humidity.
What to wear in July
For London in July, pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
July in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| London | 2373 | 1355 | 602.3 |
| Bexley | 2373 | 1355 | 602.3 |
| Slough | 2374 | 1355 | 602.4 |
| Crawley | 2169 | 1356 | 582.3 |
| Luton | 2272 | 1254 | 642.5 |
| Southend-on-Sea | 2271 | 1457 | 582.3 |
| Reading | 2374 | 1355 | 612.4 |
| Basingstoke | 2373 | 1254 | 612.4 |
| Milton Keynes | 2272 | 1254 | 642.5 |
Other months in London
- January7 °C45 °F / 2 °C35 °F
- February8 °C46 °F / 1 °C35 °F
- March10 °C51 °F / 2 °C36 °F
- April14 °C57 °F / 5 °C40 °F
- May17 °C63 °F / 8 °C46 °F
- June21 °C69 °F / 11 °C52 °F
- July23 °C73 °F / 13 °C55 °F
- August23 °C73 °F / 13 °C55 °F
- September20 °C68 °F / 10 °C50 °F
- October15 °C60 °F / 8 °C46 °F
- November11 °C51 °F / 5 °C40 °F
- December8 °C46 °F / 3 °C37 °F
Frequently asked questions
How warm is London in July?
In July the average high in London is 23 °C (73 °F) and the average low is 13 °C (55 °F).
Does it rain a lot in London in July?
On average about 60 mm (2.3 in) of precipitation falls in July; it ranks 6th of the 12 months.
Is July the warmest month in London?
Yes. July is the warmest month in London. The coldest month is February, with an average low of 1 °C (35 °F).
How long is the day in London in July?
In the middle of July the day in London lasts about 16.2 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is London in July?
The average relative humidity in July is about 76%. This is a long-term average for the whole day.
How cloudy is London in July?
On average about 69% of the sky is covered by cloud in July. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.