January Weather in Hamilton, Canada

Last updated: June 18, 2025

In January, the average temperature in Hamilton, Canada hovers around -3°C (27°F). Expect chilling lows that can drop to -22°C (-7°F), while spells of warmth might reach a maximum of 12°C (55°F). This month typically sees 76 mm (3.0 in) of precipitation spread over 9 days, with an average humidity level of 91%. Stay prepared for a wet and cold winter experience!

January Temperature in Hamilton

In January in Hamilton, the average temperature is -3°C (27°F), with maximums reaching 12°C (55°F) and minimums dropping as low as -22°C (-7°F). Travelers should be prepared for a chilly climate with significant temperature fluctuations.

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

The chart illustrates January temperature patterns in Hamilton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hamilton, January typically has an average temperature of -3°C (27°F), with highs reaching up to 12°C (55°F) and lows dropping to around -22°C (-7°F).

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

January Precipitation in Hamilton

In Hamilton in January, the precipitation amount is 76 mm (3.0 in) spread over a period of 9 days.

January Precipitation Trends in Hamilton

The chart displays monthly precipitation patterns in Hamilton, 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 Hamilton, January typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 9 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 Hamilton

In Hamilton in January humidity is 91%. With an average temperature of -3°C (27°F), this humidity feels like a thick, icy blanket wrapping around you, making travel quite uncomfortable as every breath is a mix of frigid air and moisture, and the cold dampness clings to your skin, turning even short outings into a test of endurance.

January Average Humidity in Hamilton

This chart illustrates the average monthly humidity levels in Hamilton, 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 Hamilton is approximately 91%, 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 Hamilton

In Hamilton 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 Hamilton, you can visit Hourly UV Index in Hamilton.

Maximum UV Index Levels in Hamilton for January

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

Data source: Hamilton 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 Hamilton Compares to Other Months

Weather in Hamilton varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Hamilton, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Hamilton, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	76 mm (3.0 inches)	91%	low
February Weather	-2°C (28°F)	81 mm (3.2 inches)	91%	moderate
March Weather	1°C (35°F)	68 mm (2.7 inches)	88%	moderate
April Weather	6°C (44°F)	111 mm (4.4 inches)	88%	very high
May Weather	13°C (55°F)	99 mm (3.9 inches)	82%	very high
June Weather	19°C (66°F)	89 mm (3.5 inches)	79%	very high
July Weather	23°C (73°F)	88 mm (3.5 inches)	77%	very high
August Weather	22°C (72°F)	78 mm (3.1 inches)	72%	very high
September Weather	18°C (65°F)	67 mm (2.7 inches)	76%	high
October Weather	12°C (54°F)	111 mm (4.4 inches)	83%	moderate
November Weather	4°C (40°F)	81 mm (3.2 inches)	88%	moderate
December Weather	0°C (33°F)	80 mm (3.1 inches)	87%	low