May Weather in Calvinia, South Africa

Last updated: August 31, 2025

In May, the average temperature in Calvinia, South Africa is a pleasant 15°C (59°F). While you might experience a chilly minimum of -1°C (30°F), the days can warm up to a maximum of 30°C (87°F). Expect moderate rainfall, with an average precipitation amount of 12 mm (0.5 in) over just 1 day. Don't forget that the average humidity sits around 74%, adding a touch of mugginess to the air!

May Temperature in Calvinia

In May in Calvinia, the average temperature is 15°C (59°F). Maximum can reach 30°C (87°F) and minimum can be as low as -1°C (30°F). It's a great time to visit, so pack accordingly to enjoy the range of temperatures!

May Weather in Calvinia: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Calvinia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Calvinia, May typically has an average temperature of 15°C (59°F), with highs reaching up to 30°C (87°F) and lows dropping to around -1°C (30°F).

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

May Precipitation in Calvinia

In Calvinia in May, the precipitation amount is 12 mm (0.5 in) over the course of 1 day.

May Precipitation Trends in Calvinia

The chart displays monthly precipitation patterns in Calvinia, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Calvinia, May typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 1 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Calvinia

In Calvinia in May, humidity is 74%. With an average temperature of 15°C (59°F), this humidity feels like traveling through a warm, sticky blanket that clings to your skin, making outdoor activities a bit uncomfortable and prompting you to seek out shaded areas or cool breezes.

May Average Humidity in Calvinia

This chart illustrates the average monthly humidity levels in Calvinia, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Calvinia is approximately 74%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Calvinia

In Calvinia in May, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Calvinia, you can refer to this Hourly UV Index in Calvinia.

Maximum UV Index Levels in Calvinia for May

The chart shows the monthly maximum UV Index (UVI) for Calvinia in May, 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 May, the maximum UV index in Calvinia typically reaches 6, which falls under the high exposure category.

Data source: Calvinia May 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 May Weather in Calvinia Compares to Other Months

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

This table compares monthly weather conditions in Calvinia, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (75°F)	10 mm (0.4 inches)	46%	extreme
February Weather	24°C (75°F)	8 mm (0.3 inches)	47%	extreme
March Weather	21°C (71°F)	11 mm (0.5 inches)	59%	extreme
April Weather	18°C (65°F)	12 mm (0.5 inches)	64%	very high
May Weather	15°C (59°F)	12 mm (0.5 inches)	74%	high
June Weather	11°C (52°F)	23 mm (0.9 inches)	79%	moderate
July Weather	10°C (51°F)	23 mm (0.9 inches)	75%	moderate
August Weather	10°C (51°F)	15 mm (0.6 inches)	69%	high
September Weather	14°C (58°F)	8 mm (0.3 inches)	61%	very high
October Weather	18°C (64°F)	15 mm (0.6 inches)	52%	extreme
November Weather	19°C (67°F)	7 mm (0.3 inches)	43%	extreme
December Weather	21°C (70°F)	14 mm (0.5 inches)	43%	extreme