July Weather in London, United States

Last updated: June 24, 2025

In London, United States, the average temperature in July reaches a warm 31°C (88°F). Expect minimums of 19°C (66°F) and maximums soaring up to 45°C (113°F). With 0 mm (0.0 in) of precipitation over 0 days, you can enjoy the sunshine with an average humidity of just 36%. Perfect weather for outdoor adventures!

July Temperature in London

In July in London, the average temperature is 31°C (88°F), with maximums reaching 45°C (113°F) and minimums dipping as low as 19°C (66°F). Travelers should be prepared for hot weather and consider packing lightweight clothing and staying hydrated.

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 31°C (88°F), with highs reaching up to 45°C (113°F) and lows dropping to around 19°C (66°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 0 mm (0.0 in) during 0 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 0 mm (0.0 inches) of precipitation spread over approximately 0 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 36%. With an average temperature of 31°C (88°F), this humidity feels like a warm embrace, making it comfortable for traveling while still requiring occasional breaks to refresh and stay hydrated.

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 36%, 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	10°C (51°F)	92 mm (3.6 inches)	82%	moderate
February Weather	11°C (53°F)	85 mm (3.3 inches)	85%	moderate
March Weather	14°C (57°F)	112 mm (4.4 inches)	80%	very high
April Weather	18°C (65°F)	44 mm (1.7 inches)	72%	very high
May Weather	22°C (72°F)	25 mm (1.0 inches)	58%	very high
June Weather	27°C (82°F)	1 mm (0.0 inches)	49%	extreme
July Weather	31°C (88°F)	0 mm (0.0 inches)	36%	extreme
August Weather	31°C (87°F)	0 mm (0.0 inches)	30%	very high
September Weather	27°C (80°F)	2 mm (0.1 inches)	42%	very high
October Weather	20°C (68°F)	16 mm (0.6 inches)	59%	high
November Weather	14°C (58°F)	45 mm (1.8 inches)	78%	moderate
December Weather	10°C (50°F)	76 mm (3.0 inches)	79%	moderate