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December Weather in Theunissen, South Africa

Last updated: August 31, 2025

In December, the average temperature in Theunissen, South Africa hovers around 22°C (73°F). Temperatures can range from a chilly 9°C (48°F) to a sweltering 38°C (100°F). Expect a fair amount of rain, with 95 mm (3.8 in) of precipitation over roughly 14 days, coupled with an average humidity of 75%.

December Temperature in Theunissen

In December in Theunissen, the average temperature is 22°C (73°F). Maximums can reach 38°C (100°F), and minimums can be as low as 9°C (48°F). Pack accordingly for a warm trip, but be prepared for cooler evenings.

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

The chart illustrates December temperature patterns in Theunissen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Theunissen, December typically has an average temperature of 22°C (73°F), with highs reaching up to 38°C (100°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec737168625549485462677072
Data source: Temperature data for Theunissen 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 Theunissen

In Theunissen in December, the precipitation amount is 95 mm (3.8 in) over the course of 14 days.

December Precipitation Trends in Theunissen

The chart displays monthly precipitation patterns in Theunissen, 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 Theunissen, December typically receives around 95 mm (3.8 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec9613578711053168407095
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Theunissen

In Theunissen in December humidity is 75%. With an average temperature of 22°C (73°F), this humidity feels like a warm, enveloping embrace, making it essential for travelers to stay hydrated and wear light, breathable clothing to enjoy their adventures comfortably.

December Average Humidity in Theunissen

This chart illustrates the average monthly humidity levels in Theunissen, 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 Theunissen is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%74%79%83%84%80%69%60%63%61%67%75%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Theunissen

In Theunissen 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 Theunissen.

Maximum UV Index Levels in Theunissen for December

The chart shows the monthly maximum UV Index (UVI) for Theunissen 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 Theunissen typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15151310756811121416
Data source: Theunissen 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 Theunissen Compares to Other Months

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

This table compares monthly weather conditions in Theunissen, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (73°F)96 mm (3.8 inches)75%extreme
February Weather22°C (72°F)135 mm (5.3 inches)74%extreme
March Weather20°C (69°F)78 mm (3.1 inches)79%extreme
April Weather17°C (62°F)71 mm (2.8 inches)83%very high
May Weather13°C (55°F)10 mm (0.4 inches)84%high
June Weather9°C (49°F)4 mm (0.2 inches)79%moderate
July Weather9°C (48°F)3 mm (0.1 inches)69%high
August Weather12°C (54°F)16 mm (0.6 inches)60%very high
September Weather17°C (62°F)8 mm (0.3 inches)63%extreme
October Weather19°C (67°F)40 mm (1.6 inches)61%extreme
November Weather21°C (70°F)70 mm (2.7 inches)67%extreme
December Weather22°C (73°F)95 mm (3.8 inches)75%extreme

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