July Weather in London, United States

Last updated: June 24, 2025

In July, the average temperature in London, United States reaches a warm 27°C (82°F), with a minimum of 15°C (60°F) and a maximum soaring to 39°C (102°F). Expect about 86 mm (3.4 in) of precipitation spread over 10 days, contributing to an average humidity level of 75%. Stay prepared for a mix of sunny days and occasional rain!

July Temperature in London

In July in London, the average temperature is 27°C (82°F), with maximums reaching 39°C (102°F) and minimums dropping to as low as 15°C (60°F). This range makes it an ideal time for travelers looking to experience warm weather while also enjoying cooler evenings.

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

The chart illustrates July 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, July typically has an average temperature of 27°C (82°F), with highs reaching up to 39°C (102°F) and lows dropping to around 15°C (60°F).

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

July Precipitation in London

In London in July, the precipitation amount is 86 mm (3.4 in) over the course of 10 days.

July Precipitation Trends in London

The chart displays monthly precipitation patterns in London, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In London, July typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 10 days.

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

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Millimeters (mm) Inches (in)

July Humidity in London

In London in July, humidity is 75%. With an average temperature of 27°C (82°F), this humidity feels like a warm blanket enveloping you, making sightseeing comfortable yet sticky, and prompting travelers to seek shade and refreshing drinks during their adventures.

July Average Humidity in London

This chart illustrates the average monthly humidity levels in London, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in London is approximately 75%, offering insight into how humid the weather typically is during this month.

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

July UV Index in London

In London in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in London.

Maximum UV Index Levels in London for July

The chart shows the monthly maximum UV Index (UVI) for London in July, 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 July, the maximum UV index in London typically reaches 11, which falls under the extreme exposure category.

Data source: London July 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 July 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 July’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 July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	88 mm (3.4 inches)	82%	moderate
February Weather	7°C (44°F)	135 mm (5.3 inches)	79%	high
March Weather	12°C (54°F)	140 mm (5.5 inches)	77%	very high
April Weather	15°C (60°F)	150 mm (5.9 inches)	78%	very high
May Weather	21°C (70°F)	198 mm (7.8 inches)	82%	very high
June Weather	26°C (78°F)	122 mm (4.8 inches)	81%	extreme
July Weather	27°C (82°F)	86 mm (3.4 inches)	75%	extreme
August Weather	26°C (80°F)	127 mm (5.0 inches)	61%	very high
September Weather	24°C (76°F)	65 mm (2.6 inches)	59%	very high
October Weather	17°C (64°F)	103 mm (4.1 inches)	69%	high
November Weather	10°C (51°F)	88 mm (3.4 inches)	82%	moderate
December Weather	8°C (46°F)	100 mm (3.9 inches)	87%	moderate