March Weather in London, United States

Last updated: June 24, 2025

In March, the average temperature in London, United States hovers around 12°C (54°F). Expect a wide range, with minimums dipping to -7°C (19°F) and soaring up to 31°C (89°F). Prepare for some wet days, as the region receives approximately 140 mm (5.5 in) of precipitation over 14 days, alongside an average humidity of 77%.

March Temperature in London

In March in London, the average temperature is 12°C (54°F). The maximum can reach 31°C (89°F), and the minimum can be as low as -7°C (19°F). Be prepared for a wide range of temperatures and pack accordingly for both warm and chilly weather.

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

The chart illustrates March 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, March typically has an average temperature of 12°C (54°F), with highs reaching up to 31°C (89°F) and lows dropping to around -7°C (19°F).

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

March Precipitation in London

In London in March, the precipitation amount is 140 mm (5.5 in) over the course of 14 days.

March Precipitation Trends in London

The chart displays monthly precipitation patterns in London, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In London, March typically receives around 140 mm (5.5 inches) of precipitation spread over approximately 14 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in London

In London in March, humidity is 77%. With an average temperature of 12°C (54°F), this humidity feels like a damp chill that wraps around you, making your travels a little more uncomfortable and requiring you to dress in layers to stay warm and dry.

March Average Humidity in London

This chart illustrates the average monthly humidity levels in London, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in London is approximately 77%, offering insight into how humid the weather typically is during this month.

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

March UV Index in London

In London in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in London.

Maximum UV Index Levels in London for March

The chart shows the monthly maximum UV Index (UVI) for London in March, 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 March, the maximum UV index in London typically reaches 8, which falls under the very high exposure category.

Data source: London March 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 March 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 March’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 March’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