August Weather in London, United States

Last updated: June 24, 2025

In London, United States, the average temperature in August hovers around 24°C (76°F), providing a pleasant climate. However, temperatures can vary significantly, with a minimum of 13°C (55°F) and a maximum of 36°C (97°F). Expect 123 mm (4.8 in) of precipitation spread over approximately 13 days, contributing to an average humidity of around 66%.

August Temperature in London

In August in London, the average temperature is 24°C (76°F). Maximums can reach 36°C (97°F), and minimums can be as low as 13°C (55°F). This pleasant weather makes London an ideal destination for travelers seeking a comfortable climate.

August Weather in London: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in London, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In London, August typically has an average temperature of 24°C (76°F), with highs reaching up to 36°C (97°F) and lows dropping to around 13°C (55°F).

Data source: Temperature data for London generated using information from the Copernicus Climate Change Service.

August Precipitation in London

In London in August, the precipitation amount is 123 mm (4.8 in) over the course of 13 days.

August Precipitation Trends in London

The chart displays monthly precipitation patterns in London, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In London, August typically receives around 123 mm (4.8 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

August Humidity in London

In London in August humidity is 66%. With an average temperature of 24°C (76°F), this humidity feels like a warm, tropical embrace, making travel both invigorating and slightly exhausting, as you immerse yourself in the vibrant atmosphere while constantly seeking shade and refreshment.

August Average Humidity in London

This chart illustrates the average monthly humidity levels in London, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in London is approximately 66%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in London

In London in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in London.

Maximum UV Index Levels in London for August

The chart shows the monthly maximum UV Index (UVI) for London in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in London typically reaches 10, which falls under the very high exposure category.

Data source: London August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How August Weather in London Compares to Other Months

Weather in London varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in London, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in London, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	98 mm (3.9 inches)	88%	moderate
February Weather	6°C (43°F)	179 mm (7.0 inches)	88%	high
March Weather	10°C (49°F)	134 mm (5.3 inches)	87%	high
April Weather	14°C (57°F)	134 mm (5.3 inches)	84%	very high
May Weather	20°C (67°F)	126 mm (5.0 inches)	84%	extreme
June Weather	23°C (73°F)	141 mm (5.5 inches)	83%	extreme
July Weather	25°C (78°F)	109 mm (4.3 inches)	79%	extreme
August Weather	24°C (76°F)	123 mm (4.8 inches)	66%	very high
September Weather	22°C (72°F)	107 mm (4.2 inches)	67%	very high
October Weather	16°C (61°F)	120 mm (4.7 inches)	76%	high
November Weather	8°C (46°F)	76 mm (3.0 inches)	89%	moderate
December Weather	6°C (43°F)	135 mm (5.3 inches)	88%	moderate