October Weather in London, United States

Last updated: June 24, 2025

In October, the average temperature in London, United States hovers around 16°C (61°F). However, be prepared for a range, as temperatures can drop as low as -1°C (30°F) or soar to a sizzling 35°C (96°F). With 120 mm (4.7 in) of precipitation spread over 10 days, a raincoat might come in handy. The air tends to be quite moist, boasting an average humidity of 76%.

October Temperature in London

In October in London, the average temperature is 16°C (61°F). Maximum temperatures can reach 35°C (96°F), while minimums can drop as low as -1°C (30°F). Be sure to pack layers to accommodate the varying temperatures, and enjoy your travels!

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

The chart illustrates October 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, October typically has an average temperature of 16°C (61°F), with highs reaching up to 35°C (96°F) and lows dropping to around -1°C (30°F).

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

October Precipitation in London

In London in October, the precipitation amount is 120 mm (4.7 in) spread over a duration of 10 days.

October Precipitation Trends in London

The chart displays monthly precipitation patterns in London, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In London, October typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in London

In London in October humidity is 76%. With an average temperature of 16°C (61°F), this humidity feels like a warm embrace that makes traveling feel slightly heavy yet refreshing, often prompting you to seek shade or indulge in ice-cold drinks to stay comfortable.

October Average Humidity in London

This chart illustrates the average monthly humidity levels in London, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in London is approximately 76%, offering insight into how humid the weather typically is during this month.

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

October UV Index in London

In London in October, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in London.

Maximum UV Index Levels in London for October

The chart shows the monthly maximum UV Index (UVI) for London in October, 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 October, the maximum UV index in London typically reaches 7, which falls under the high exposure category.

Data source: London October 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 October 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 October’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 October’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