June Weather in Koster, South Africa

Last updated: August 31, 2025

In June, the average temperature in Koster, South Africa is a comfortable 12°C (55°F). Expect a minimum of 1°C (34°F) and a maximum of 26°C (79°F), making it a versatile climate for various activities. There's a light touch of precipitation, with only 5 mm (0.2 in) expected across 0 days. With an average humidity of 56%, you'll find the weather pleasantly refreshing!

June Temperature in Koster

In June in Koster, the average temperature is 12°C (55°F). Maximums can reach 26°C (79°F), and minimums can be as low as 1°C (34°F). Travelers should be prepared for a range of temperatures, ensuring to pack layers for both warm and cooler conditions.

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

The chart illustrates June 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, June typically has an average temperature of 12°C (55°F), with highs reaching up to 26°C (79°F) and lows dropping to around 1°C (34°F).

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

June Precipitation in Koster

In Koster in June, the precipitation amount is 5 mm (0.2 in) during a span of 0 days.

June Precipitation Trends in Koster

The chart displays monthly precipitation patterns in Koster, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Koster, June typically receives around 5 mm (0.2 inches) of precipitation spread over approximately 0 days.

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

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Millimeters (mm) Inches (in)

June Humidity in Koster

In Koster in June humidity is 56%. With average temperature 12°C (55°F), this humidity feels like a cool, crisp embrace that invigorates the senses, making it perfect for exploring the sights without feeling overheated.

June Average Humidity in Koster

This chart illustrates the average monthly humidity levels in Koster, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Koster is approximately 56%, offering insight into how humid the weather typically is during this month.

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

June UV Index in Koster

In Koster in June, 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 Koster, you can refer to this Hourly UV Index in Koster.

Maximum UV Index Levels in Koster for June

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

Data source: Koster June 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 June 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 June’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 June’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