May Weather in Koster, South Africa

Last updated: August 31, 2025

In May, the average temperature in Koster, South Africa is a mild 15°C (59°F), with minimums dipping down to 2°C (36°F) and pleasant highs reaching up to 27°C (80°F). Expect a precipitation amount of 9 mm (0.4 in) over 1 day, alongside an average humidity of 56%. Perfect weather for exploring the outdoors!

May Temperature in Koster

In May in Koster, the average temperature is 15°C (59°F). The maximum can reach 27°C (80°F) and the minimum can be as low as 2°C (36°F). It's a great time to visit Koster, as you can enjoy mild weather while exploring its attractions.

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

The chart illustrates May temperature patterns in Koster, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Koster, May typically has an average temperature of 15°C (59°F), with highs reaching up to 27°C (80°F) and lows dropping to around 2°C (36°F).

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

May Precipitation in Koster

In Koster in May, the precipitation amount is 9 mm (0.4 in) over the course of 1 day.

May Precipitation Trends in Koster

The chart displays monthly precipitation patterns in Koster, 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 Koster, May typically receives around 9 mm (0.4 inches) of precipitation spread over approximately 1 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Koster

In Koster in May humidity is 56%. With an average temperature of 15°C (59°F), this humidity feels like a refreshing yet slightly damp embrace, making it an ideal time for exploring the surroundings without the discomfort of sweltering heat.

May Average Humidity in Koster

This chart illustrates the average monthly humidity levels in Koster, 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 Koster is approximately 56%, 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 Koster

In Koster in May, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Koster.

Maximum UV Index Levels in Koster for May

The chart shows the monthly maximum UV Index (UVI) for Koster 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 Koster typically reaches 7, which falls under the high exposure category.

Data source: Koster 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 Koster Compares to Other Months

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

This table compares monthly weather conditions in Koster, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (74°F)	106 mm (4.2 inches)	66%	extreme
February Weather	22°C (72°F)	128 mm (5.0 inches)	66%	extreme
March Weather	21°C (70°F)	53 mm (2.1 inches)	67%	extreme
April Weather	18°C (65°F)	43 mm (1.7 inches)	61%	extreme
May Weather	15°C (59°F)	9 mm (0.4 inches)	56%	high
June Weather	12°C (55°F)	5 mm (0.2 inches)	56%	high
July Weather	12°C (54°F)	2 mm (0.1 inches)	55%	high
August Weather	16°C (61°F)	1 mm (0.1 inches)	45%	very high
September Weather	20°C (68°F)	5 mm (0.2 inches)	49%	extreme
October Weather	21°C (71°F)	47 mm (1.9 inches)	47%	extreme
November Weather	23°C (73°F)	67 mm (2.7 inches)	53%	extreme
December Weather	23°C (73°F)	120 mm (4.7 inches)	64%	extreme