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December Weather in Riversdale, South Africa

Last updated: August 31, 2025

In Riversdale, South Africa, the average temperature in December hovers around 21°C (69°F), making it a pleasantly warm time of year. Temperatures can swing from a cool 11°C (51°F) to a scorching 40°C (104°F), so be prepared for a variety of weather! With 24 mm (0.9 in) of precipitation spread over about 6 days, a light rain might grace your visit. Additionally, expect a high average humidity of 79%, adding to that tropical feel.

December Temperature in Riversdale

In December in Riversdale, the average temperature is 21°C (69°F), with maximums reaching up to 40°C (104°F) and minimums dropping as low as 11°C (51°F). It's advisable to pack for both warm days and cooler evenings while exploring this destination.

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

The chart illustrates December temperature patterns in Riversdale, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riversdale, December typically has an average temperature of 21°C (69°F), with highs reaching up to 40°C (104°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec727269646057555559636669
Data source: Temperature data for Riversdale 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 Riversdale

In Riversdale in December, the total precipitation amount is 24 mm (0.9 in) over a span of 6 days.

December Precipitation Trends in Riversdale

The chart displays monthly precipitation patterns in Riversdale, 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 Riversdale, December typically receives around 24 mm (0.9 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec331936182916263132324424
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Riversdale

In Riversdale in December, humidity is 79%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace, making it ideal for leisurely explorations yet challenging for those unaccustomed to the mugginess while traveling.

December Average Humidity in Riversdale

This chart illustrates the average monthly humidity levels in Riversdale, 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 Riversdale is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%82%83%82%78%77%79%76%77%79%77%79%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Riversdale

In Riversdale in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Riversdale, you can check here.

Maximum UV Index Levels in Riversdale for December

The chart shows the monthly maximum UV Index (UVI) for Riversdale 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 Riversdale typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141311854469111214
Data source: Riversdale 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 Riversdale Compares to Other Months

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

This table compares monthly weather conditions in Riversdale, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)33 mm (1.3 inches)79%extreme
February Weather22°C (72°F)19 mm (0.7 inches)82%extreme
March Weather21°C (69°F)36 mm (1.4 inches)83%extreme
April Weather18°C (65°F)18 mm (0.7 inches)82%very high
May Weather16°C (61°F)28 mm (1.1 inches)78%moderate
June Weather14°C (57°F)16 mm (0.6 inches)77%moderate
July Weather13°C (55°F)26 mm (1.0 inches)78%moderate
August Weather13°C (55°F)31 mm (1.2 inches)76%high
September Weather15°C (60°F)32 mm (1.2 inches)77%very high
October Weather17°C (64°F)32 mm (1.3 inches)79%extreme
November Weather19°C (66°F)44 mm (1.7 inches)77%extreme
December Weather21°C (69°F)24 mm (0.9 inches)79%extreme

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