December Weather in Delmas, South Africa

Last updated: August 31, 2025

In December, the average temperature in Delmas, South Africa hovers around 20°C (68°F). Expect a range from a crisp 9°C (49°F) to a warm 33°C (91°F), making for quite a varied climate. With precipitation amounting to 164 mm (6.5 in) spread over 18 days, you might want to keep an umbrella handy. Additionally, the average humidity sits at a balmy 81%, enhancing that tropical feel.

December Temperature in Delmas

In December in Delmas, the average temperature is 20°C (68°F). Maximums can reach 33°C (91°F), while minimums can be as low as 9°C (49°F). This makes Delmas an ideal destination for travelers seeking a pleasant climate for outdoor activities.

December Weather in Delmas: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Delmas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Delmas, December typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (91°F) and lows dropping to around 9°C (49°F).

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

December Precipitation in Delmas

In Delmas in December, the precipitation amount is 164 mm (6.5 in) over the course of 18 days.

December Precipitation Trends in Delmas

The chart displays monthly precipitation patterns in Delmas, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Delmas, December typically receives around 164 mm (6.5 inches) of precipitation spread over approximately 18 days.

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

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Millimeters (mm) Inches (in)

December Humidity in Delmas

In Delmas in December humidity is 81%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace that can make outdoor activities feel steamy and exhausting, potentially leading travelers to seek shade or a refreshing drink more often.

December Average Humidity in Delmas

This chart illustrates the average monthly humidity levels in Delmas, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Delmas is approximately 81%, offering insight into how humid the weather typically is during this month.

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

December UV Index in Delmas

In Delmas in December, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Delmas.

Maximum UV Index Levels in Delmas for December

The chart shows the monthly maximum UV Index (UVI) for Delmas in December, 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 December, the maximum UV index in Delmas typically reaches 16, which falls under the extreme exposure category.

Data source: Delmas December 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 December Weather in Delmas Compares to Other Months

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

This table compares monthly weather conditions in Delmas, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (68°F)	111 mm (4.4 inches)	79%	extreme
February Weather	20°C (68°F)	124 mm (4.9 inches)	77%	extreme
March Weather	19°C (66°F)	68 mm (2.7 inches)	77%	extreme
April Weather	16°C (62°F)	53 mm (2.1 inches)	81%	extreme
May Weather	13°C (56°F)	17 mm (0.7 inches)	82%	high
June Weather	11°C (51°F)	4 mm (0.2 inches)	73%	high
July Weather	11°C (51°F)	1 mm (0.1 inches)	71%	high
August Weather	14°C (58°F)	3 mm (0.1 inches)	68%	very high
September Weather	18°C (64°F)	11 mm (0.4 inches)	74%	extreme
October Weather	19°C (66°F)	73 mm (2.9 inches)	74%	extreme
November Weather	20°C (67°F)	98 mm (3.8 inches)	82%	extreme
December Weather	20°C (68°F)	164 mm (6.5 inches)	81%	extreme