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December Weather in Stilfontein, South Africa

Last updated: August 31, 2025

In Stilfontein, South Africa, the average temperature in December hovers around 23°C (73°F). This pleasant climate can see a minimum of 10°C (51°F) and a maximum soaring to 38°C (100°F). Expect 121 mm (4.8 in) of precipitation over approximately 15 days, with an average humidity of 67% adding to the humidity of the atmosphere.

December Temperature in Stilfontein

In December in Stilfontein, the average temperature is 23°C (73°F). Maximums can reach 38°C (100°F) and minimums can be as low as 10°C (51°F). It's an ideal time for travelers to enjoy outdoor activities while being prepared for warm days and cooler nights.

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

The chart illustrates December temperature patterns in Stilfontein, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stilfontein, December typically has an average temperature of 23°C (73°F), with highs reaching up to 38°C (100°F) and lows dropping to around 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec737270645752515866707273
Data source: Temperature data for Stilfontein generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Stilfontein

In Stilfontein in December, the precipitation amount is 121 mm (4.8 in) during a period of 15 days.

December Precipitation Trends in Stilfontein

The chart displays monthly precipitation patterns in Stilfontein, 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 Stilfontein, December typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec1011105053672363872121
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Stilfontein

In Stilfontein in December humidity is 67%. With an average temperature of 23°C (73°F), this humidity feels like a warm, enveloping blanket that makes the air feel thick and slightly sticky, which can be challenging for travelers who prefer cooler, drier conditions.

December Average Humidity in Stilfontein

This chart illustrates the average monthly humidity levels in Stilfontein, 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 Stilfontein is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec71%71%74%75%70%65%59%56%56%54%59%67%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Stilfontein

In Stilfontein 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 Stilfontein.

Maximum UV Index Levels in Stilfontein for December

The chart shows the monthly maximum UV Index (UVI) for Stilfontein 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 Stilfontein typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16151311756811131516
Data source: Stilfontein 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 Stilfontein Compares to Other Months

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

This table compares monthly weather conditions in Stilfontein, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)101 mm (4.0 inches)71%extreme
February Weather22°C (72°F)110 mm (4.3 inches)70%extreme
March Weather21°C (70°F)50 mm (2.0 inches)74%extreme
April Weather18°C (64°F)52 mm (2.1 inches)75%extreme
May Weather14°C (58°F)6 mm (0.3 inches)70%high
June Weather11°C (52°F)7 mm (0.3 inches)65%moderate
July Weather11°C (51°F)2 mm (0.1 inches)59%high
August Weather15°C (58°F)3 mm (0.1 inches)56%very high
September Weather19°C (66°F)6 mm (0.2 inches)56%extreme
October Weather21°C (70°F)38 mm (1.5 inches)54%extreme
November Weather22°C (72°F)72 mm (2.8 inches)59%extreme
December Weather23°C (73°F)121 mm (4.8 inches)67%extreme

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