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London in August: Weather, Average temperature and Climate

Discover the weather for London in August and if it’s a good time to travel (based on historical data).
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Weather in London in August 2025

Good Weather
Mild
🌧️
Rainy
Weather for London in August is typically good with an average maximum temperature of +22°C during the day, and approximately 5 sunny days monthly. Typically, there are about 16 rainy days with the total average precipitation that falls in August around 58 mm. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.
Good to know:
  • August is usually the hottest month of the year in London;

Average weather

☀️
+22°C
Avg. max. temperature
+7°C
Min.
+37°C
Max.
58 mm
Total precipitation
70%
Avg. humidity
3 m/s
Avg. wind
5 ☀️
Sunny Days
9 ⛅️
Cloudy
16 🌦
Rainy
Our opinion: London has good weather in August.

Average temperature in London in August

Here are the expected maximum, average and minimum temperatures in London for August based on the historical data.
Last Year
Historical Data

The expected average maximum temperature in August is +22°C with a maximum of +28°C and a minimum of +11°C.

The average maximum temperature goes down 35% by the end of the month, compared with the beginning of the month, from +23°C to +17°C.

Is London warm or cold in August?

London is typically mild in August.

Maximum temperatures go up compared to the previous month from +22°C to +22°C. The minimum temperature also goes up from +14°C to +14°C.

Pack a light jacket as it will be warm in the day and cool in the evenings.

August is the hottest month in London, here is the comparison with other months:

Climate in London in August

London weather looks like this, on average, in August and the surrounding months.
JulyAugustSeptember
Avg. temperature
+22°C+22°C+19°C
Min. temperature
+8°C+7°C+3°C
Max. temperature
+39°C+37°C+32°C
Rainfall
54 mm58 mm47 mm
Wind
3 m/s3 m/s3 m/s
Humidity
68%70%74%
Air pressure
1015 HPa1014 HPa1015 HPa
Sunny days
554
Cloudy days
8911
Rainy days
161614
Snowy days
000

August weather is still as good as in July. The temperature levels stay the same in the area of +22°C for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 54 mm to 58 mm. Humidity rises from 68% to 70%. The average wind speed doesn’t change much during August, staying around 3 m/s. The amount of sunny days stay about the same, averaging 5 sunny days during the month.

September brings much the same weather, it remains good.

Wind

Wind speed in London in August based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in London is gradually decreasing during August, going from 5 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during August in London based on historical data.
Last Year
Historical Data
Total precipitation in August is about 72 mm, with a 45% chance of rain on a typical day. The maximum amount of rainfall per day is around 24 mm, which is considered light rain. August is a pretty wet month with over 14 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how August is compared with other months in the amount of precipitation, total mm:
London wettest month is October, where a typical day has a 52% chance of precipitation and 68 mm of rainfall per day. February, on the other hand, is the driest month with a mere 41% chance of precipitation and 41 mm of rainfall per day.

How was the weather last August in London?

This is the weather in London in August 2023:
1 August
☁️
+23°C
2 August
🌧️
+19°C
3 August
☁️
+21°C
4 August
☁️
+20°C
5 August
🌧️
+18°C
6 August
☁️
+20°C
7 August
☀️
+22°C
8 August
🌧️
+17°C
9 August
☀️
+25°C
10 August
☀️
+27°C
11 August
☁️
+24°C
12 August
☁️
+21°C
13 August
☁️
+22°C
14 August
🌧️
+22°C
15 August
☁️
+24°C
16 August
☁️
+26°C
17 August
☁️
+24°C
18 August
☁️
+23°C
19 August
☁️
+24°C
20 August
☁️
+25°C
21 August
☁️
+25°C
22 August
☁️
+26°C
23 August
☀️
+28°C
24 August
🌧️
+25°C
25 August
☁️
+21°C
26 August
☁️
+20°C
27 August
☀️
+20°C
28 August
☁️
+21°C
29 August
☁️
+20°C
30 August
☁️
+20°C
31 August
☁️
+17°C
In August 2023 London had 5 sunny days, 21 cloudy days, and 5 rainy days. The average maximum temperature was +22°C, with an absolute maximum of +28°C and a minimum of +17°C. The average humidity was 80%, with a maximum of 99% and a minimum of 49%. The average wind speed was 3 m/s, with a maximum of 8 m/s and a minimum of 0 m/s.
Are you planning a trip in August?

Climate Change over Years

This is how London climate have been changing during last 43 years period.

The climate in London in August has not changed much over the last 43 years.

The average temperature was the lowest in 1979 (+12°C) and the highest in 2022 (+17°C). The driest year was 1996 with only 431 mm of rainfall, and the wettest year was 2021 with 1037 mm.

FAQ

Frequently asked questions about the weather in London in August:

Is August a good time to visit London?

August is a really good time to go to London. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit London.

Can you sunbathe in London in August?

August has mild temperatures in London. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Is London rainy in August?

London is often rainy in August. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in London in August?

Usually, it’s not very sunny in London in August, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in United Kingdom

Check out the weather for other cities in United Kingdom.

Monthly weather in London

Source of the data

For this page, we’ve looked at the typical weather in London, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.