How warm is it in London in July?

Daytime highs averaged 23.9 °C, night-time lows 13.2 °C. The highest value of the past 10 years was 34.5 °C (19 Jul 2022), the lowest 8.4 °C (11 Jul 2020).

How often does it rain in London in July?

On average there were 9.3 rain days (at least 1 mm) with 49.6 mm of precipitation in total. In 1 of 10 years there was no rain day at all.

🇬🇧 Weather in London in July

This is what the weather in London (United Kingdom) was like in July in 2017–2026.

Key facts at a glance

Prevailing weather: Partly cloudy

Avg. daytime high

23.9 °C

21.7 °C – 28.0 °C

Avg. night-time low

13.2 °C

11.7 °C – 14.5 °C

Avg. rain days in period

9.3

30 % of days · ≥ 1.0 mm

Avg. precipitation in period

49.6 mm

1.2 mm – 76.0 mm

Avg. sunshine per day

n/a

Sunshine duration is not available from this data source.

Avg. sea temperature

–

No sea nearby – no sea temperature.

Extremes: Highest temperature 34.5 °C (19 Jul 2022) · Lowest temperature 8.4 °C (11 Jul 2020) · Avg. daily peak wind 22 km/h

Weather mix of all days

38Sunny
101Partly cloudy
77Cloudy
63Light rain
30Rain

Summary

On average 23.9 °C during the day and 13.2 °C at night.
On average 9.3 rain days (Rain day = at least 1.0 mm of precipitation) with 49.6 mm of precipitation in total.
In 1 of 10 years there was not a single rain day.
Prevailing: Partly cloudy.
Warmest year: 2026 (avg. 28.0 °C), coolest: 2023 (avg. 21.7 °C).
Wettest year: 2023 (76.0 mm), driest: 2026 (1.2 mm).
Extremes: 34.5 °C on 19 Jul 2022 and 8.4 °C on 11 Jul 2020.

Overall values from all 10 years. How is this calculated?

Temperatures per year

Average over your travel period

Precipitation & rain days

Year by year

2026
Avg. max28.0°Avg. min14.5°
Rain days
0 Rain days
Precipitation
1.2 mm
Avg. sunshine per day
n/a
Sea temperature
–
Max 33.8 °C · Min 10.2 °C
2025
Avg. max24.8°Avg. min13.7°
Rain days
11 Rain days
Precipitation
61.7 mm
Avg. cloud cover
64 % cloudy
Sea temperature
–
Max 32.4 °C · Min 9.4 °C
2024
Avg. max22.0°Avg. min12.2°
Rain days
12 Rain days
Precipitation
66.1 mm
Avg. cloud cover
66 % cloudy
Sea temperature
–
Max 28.4 °C · Min 8.8 °C
2023
Avg. max21.7°Avg. min12.4°
Rain days
13 Rain days
Precipitation
76.0 mm
Avg. cloud cover
75 % cloudy
Sea temperature
–
Max 26.6 °C · Min 9.4 °C
2022
Avg. max25.6°Avg. min13.6°
Rain days
1 Rain days
Precipitation
5.6 mm
Avg. cloud cover
65 % cloudy
Sea temperature
–
Max 34.5 °C · Min 9.2 °C
2021
Avg. max22.5°Avg. min13.1°
Rain days
16 Rain days
Precipitation
66.2 mm
Avg. cloud cover
65 % cloudy
Sea temperature
–
Max 28.8 °C · Min 10.1 °C
2020
Avg. max22.0°Avg. min11.7°
Rain days
11 Rain days
Precipitation
46.6 mm
Avg. cloud cover
69 % cloudy
Sea temperature
–
Max 31.1 °C · Min 8.4 °C
2019
Avg. max23.9°Avg. min13.2°
Rain days
11 Rain days
Precipitation
70.3 mm
Avg. cloud cover
69 % cloudy
Sea temperature
–
Max 34.0 °C · Min 9.1 °C
2018
Avg. max26.4°Avg. min14.4°
Rain days
4 Rain days
Precipitation
28.5 mm
Avg. cloud cover
51 % cloudy
Sea temperature
–
Max 32.5 °C · Min 11.2 °C
2017
Avg. max22.5°Avg. min13.0°
Rain days
14 Rain days
Precipitation
74.1 mm
Avg. cloud cover
77 % cloudy
Sea temperature
–
Max 27.4 °C · Min 9.9 °C

Frequently asked questions

How warm is it in London in July?: Daytime highs averaged 23.9 °C, night-time lows 13.2 °C. The highest value of the past 10 years was 34.5 °C (19 Jul 2022), the lowest 8.4 °C (11 Jul 2020).
How often does it rain in London in July?: On average there were 9.3 rain days (at least 1 mm) with 49.6 mm of precipitation in total. In 1 of 10 years there was no rain day at all.

Check your exact travel dates

Choose your travel period – we show the weather for exactly those days.

Data sources

Weather data: Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains.
Sea temperature: MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis)
Place search: Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)