April Weather in London, Canada

Last updated: June 18, 2025

In London, Canada, the average temperature for April hovers around 7°C (44°F). Guests can expect a minimum of -10°C (15°F) and a maximum of 26°C (79°F). Additionally, prepare for 105 mm (4.1 in) of precipitation across 15 days, accompanied by an average humidity of 87%. Embrace the unique climate and be ready for an adventure!

April Temperature in London

In April in London, the average temperature is 7°C (44°F). Maximum temperatures can reach 26°C (79°F), while minimums can drop as low as -10°C (15°F). Be prepared for a wide range of weather conditions when traveling during this time.

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

The chart illustrates April 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, April typically has an average temperature of 7°C (44°F), with highs reaching up to 26°C (79°F) and lows dropping to around -10°C (15°F).

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

April Precipitation in London

In London in April, the total precipitation amount is 105 mm (4.1 in) over a span of 15 days.

April Precipitation Trends in London

The chart displays monthly precipitation patterns in London, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In London, April typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 15 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in London

In London in April, humidity is 87%. With an average temperature of 7°C (44°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and requiring travelers to layer up to stay warm and dry.

April Average Humidity in London

This chart illustrates the average monthly humidity levels in London, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in London is approximately 87%, offering insight into how humid the weather typically is during this month.

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

April UV Index in London

In London in April, 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 April

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

Data source: London April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	74 mm (2.9 inches)	90%	low
February Weather	-3°C (26°F)	78 mm (3.1 inches)	90%	moderate
March Weather	1°C (34°F)	78 mm (3.1 inches)	87%	moderate
April Weather	7°C (44°F)	105 mm (4.1 inches)	87%	very high
May Weather	14°C (57°F)	104 mm (4.1 inches)	82%	very high
June Weather	19°C (67°F)	105 mm (4.1 inches)	81%	very high
July Weather	22°C (72°F)	97 mm (3.8 inches)	79%	very high
August Weather	21°C (70°F)	108 mm (4.2 inches)	80%	very high
September Weather	17°C (64°F)	86 mm (3.4 inches)	81%	very high
October Weather	11°C (53°F)	124 mm (4.9 inches)	84%	moderate
November Weather	3°C (38°F)	91 mm (3.6 inches)	88%	moderate
December Weather	0°C (31°F)	72 mm (2.8 inches)	87%	low