March Weather in Thornhill, South Africa

Last updated: August 31, 2025

In March, the average temperature in Thornhill, South Africa is a pleasant 20°C (69°F). Expect minimums dipping to 14°C (57°F) and highs reaching up to 33°C (92°F). During this time, precipitation averages 43 mm (1.7 in) spread over 7 days, contributing to an average humidity of 83%. Enjoy the comfortable climate as you explore!

March Temperature in Thornhill

In March in Thornhill, the average temperature is 20°C (69°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop to as low as 14°C (57°F). This makes Thornhill an ideal destination for travelers seeking a pleasant climate.

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

The chart illustrates March temperature patterns in Thornhill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thornhill, March typically has an average temperature of 20°C (69°F), with highs reaching up to 33°C (92°F) and lows dropping to around 14°C (57°F).

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

March Precipitation in Thornhill

In Thornhill in March, the total precipitation amount is 43 mm (1.7 in) spread over a period of 7 days.

March Precipitation Trends in Thornhill

The chart displays monthly precipitation patterns in Thornhill, 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 Thornhill, March typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 7 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Thornhill

In Thornhill in March, humidity is 83%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, making every step slightly more laborious and the air thick with moisture, which can be quite stifling for traveling.

March Average Humidity in Thornhill

This chart illustrates the average monthly humidity levels in Thornhill, 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 Thornhill is approximately 83%, 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 Thornhill

In Thornhill in March, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Thornhill.

Maximum UV Index Levels in Thornhill for March

The chart shows the monthly maximum UV Index (UVI) for Thornhill 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 Thornhill typically reaches 11, which falls under the extreme exposure category.

Data source: Thornhill 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 Thornhill Compares to Other Months

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

This table compares monthly weather conditions in Thornhill, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	21°C (70°F)	28 mm (1.1 inches)	79%	extreme
February Weather	21°C (70°F)	48 mm (1.9 inches)	81%	extreme
March Weather	20°C (69°F)	43 mm (1.7 inches)	83%	extreme
April Weather	18°C (65°F)	28 mm (1.1 inches)	80%	very high
May Weather	17°C (63°F)	31 mm (1.2 inches)	76%	moderate
June Weather	16°C (62°F)	19 mm (0.7 inches)	72%	moderate
July Weather	16°C (60°F)	33 mm (1.3 inches)	74%	moderate
August Weather	15°C (59°F)	53 mm (2.1 inches)	72%	high
September Weather	16°C (61°F)	42 mm (1.6 inches)	75%	very high
October Weather	17°C (63°F)	38 mm (1.5 inches)	76%	extreme
November Weather	18°C (65°F)	47 mm (1.9 inches)	76%	extreme
December Weather	20°C (67°F)	48 mm (1.9 inches)	78%	extreme