January Weather in Sydney, Canada

Last updated: June 18, 2025

In January, the average temperature in Sydney, Canada hovers around -3°C (27°F). Expect chilly conditions with a minimum dropping to -15°C (5°F) and a maximum reaching 12°C (55°F). Be prepared for 113 mm (4.5 in) of precipitation over about 12 days, contributing to an average humidity of 86%.

January Temperature in Sydney

In January in Sydney, the average temperature is -3°C (27°F), with maximums reaching 12°C (55°F) and minimums dropping to as low as -15°C (5°F). Travelers should be prepared for cold weather and pack accordingly to enjoy their visit.

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

The chart illustrates January temperature patterns in Sydney, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sydney, 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 -15°C (5°F).

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

January Precipitation in Sydney

In Sydney in January, the precipitation amount is 113 mm (4.5 in) over the course of 12 days.

January Precipitation Trends in Sydney

The chart displays monthly precipitation patterns in Sydney, 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 Sydney, January typically receives around 113 mm (4.5 inches) of precipitation spread over approximately 12 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 Sydney

In Sydney in January, humidity is 86%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill, making travel uncomfortable as the cold air penetrates through clothing, leaving you feeling damp and uneasy.

January Average Humidity in Sydney

This chart illustrates the average monthly humidity levels in Sydney, 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 Sydney is approximately 86%, 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 Sydney

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

Maximum UV Index Levels in Sydney for January

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

Data source: Sydney 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 Sydney Compares to Other Months

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

This table compares monthly weather conditions in Sydney, 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)	113 mm (4.5 inches)	86%	low
February Weather	-4°C (25°F)	131 mm (5.2 inches)	87%	moderate
March Weather	-2°C (29°F)	118 mm (4.6 inches)	87%	moderate
April Weather	3°C (37°F)	140 mm (5.5 inches)	87%	high
May Weather	7°C (45°F)	109 mm (4.3 inches)	88%	very high
June Weather	13°C (55°F)	102 mm (4.0 inches)	89%	very high
July Weather	18°C (64°F)	93 mm (3.7 inches)	91%	very high
August Weather	20°C (68°F)	68 mm (2.7 inches)	90%	very high
September Weather	16°C (60°F)	93 mm (3.7 inches)	86%	high
October Weather	10°C (51°F)	108 mm (4.2 inches)	82%	moderate
November Weather	5°C (42°F)	182 mm (7.2 inches)	83%	moderate
December Weather	0°C (33°F)	134 mm (5.3 inches)	83%	low