January Weather in London, Canada

Last updated: June 18, 2025

In January, the average temperature in London, Canada hovers around -4°C (25°F), with a minimum dipping as low as -25°C (-13°F) and a maximum rising to 11°C (53°F). During this chilly month, expect 74 mm (2.9 in) of precipitation over 11 days, accompanied by an average humidity level of 90%, making it a notably damp time of year.

January Temperature in London

In January in London, the average temperature is -4°C (25°F), with maximums reaching 11°C (53°F) and minimums dropping as low as -25°C (-13°F). It's essential to pack warm clothing and be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates January 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, January typically has an average temperature of -4°C (25°F), with highs reaching up to 11°C (53°F) and lows dropping to around -25°C (-13°F).

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

January Precipitation in London

In London in January, the precipitation amount is 74 mm (2.9 in) spread over the course of 11 days.

January Precipitation Trends in London

The chart displays monthly precipitation patterns in London, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In London, January typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

January Humidity in London

In London in January humidity is 90%. With an average temperature of -4°C (25°F), this humidity feels like a dense, icy blanket wrapping around you, making travel feel particularly stifling in the cold despite the sub-zero temperatures.

January Average Humidity in London

This chart illustrates the average monthly humidity levels in London, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in London is approximately 90%, offering insight into how humid the weather typically is during this month.

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

January UV Index in London

In London in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in London, you can visit Hourly UV Index in London.

Maximum UV Index Levels in London for January

The chart shows the monthly maximum UV Index (UVI) for London in January, 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 January, the maximum UV index in London typically reaches 2, which falls under the low exposure category.

Data source: London January 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 January 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 January’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 January’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