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December Weather in Wellington, South Africa

Last updated: August 31, 2025

In December, the average temperature in Wellington, South Africa hovers around 20°C (68°F). Expect a range where the minimum can dip to 9°C (48°F), while the maximum can soar to 38°C (101°F). Prepare for some rain, with precipitation levels around 30 mm (1.2 in) over the course of 5 days. The atmosphere carries an average humidity of 60%, creating a pleasant yet somewhat humid experience.

December Temperature in Wellington

In December in Wellington, the average temperature is 20°C (68°F). The maximum can reach 38°C (101°F) and the minimum can be as low as 9°C (48°F). This range makes it a great time to visit, offering both warm and cooler days for various outdoor activities.

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

The chart illustrates December temperature patterns in Wellington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wellington, December typically has an average temperature of 20°C (68°F), with highs reaching up to 38°C (101°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec727369645854525155616468
Data source: Temperature data for Wellington 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 Wellington

In Wellington in December, the precipitation amount is 30 mm (1.2 in) over the course of 5 days.

December Precipitation Trends in Wellington

The chart displays monthly precipitation patterns in Wellington, 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 Wellington, December typically receives around 30 mm (1.2 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec21103036801481319560515130
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Wellington

In Wellington in December, humidity is 60%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making traveling quite comfortable yet slightly sticky, perfect for leisurely strolls but reminding you to stay hydrated.

December Average Humidity in Wellington

This chart illustrates the average monthly humidity levels in Wellington, 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 Wellington is approximately 60%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec62%62%70%72%77%82%82%78%74%67%61%60%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Wellington

In Wellington 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 Wellington, you can check here.

Maximum UV Index Levels in Wellington for December

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

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

This table compares monthly weather conditions in Wellington, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)21 mm (0.8 inches)62%extreme
February Weather23°C (73°F)10 mm (0.4 inches)62%extreme
March Weather21°C (69°F)29 mm (1.2 inches)70%extreme
April Weather18°C (64°F)36 mm (1.4 inches)72%very high
May Weather15°C (59°F)80 mm (3.2 inches)77%moderate
June Weather12°C (54°F)148 mm (5.8 inches)82%moderate
July Weather11°C (52°F)131 mm (5.1 inches)82%moderate
August Weather11°C (51°F)95 mm (3.7 inches)78%high
September Weather13°C (56°F)60 mm (2.4 inches)74%very high
October Weather16°C (61°F)51 mm (2.0 inches)67%extreme
November Weather18°C (64°F)51 mm (2.0 inches)61%extreme
December Weather20°C (68°F)30 mm (1.2 inches)60%extreme

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