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May Weather in Wellington, South Africa

Last updated: August 31, 2025

In Wellington, South Africa, the average temperature in May hovers around 15°C (59°F). Expect a range that can dip to a chilly 2°C (35°F) or soar to a warm 31°C (88°F). With an average precipitation of 80 mm (3.2 in) over approximately 6 days, you might want to keep an umbrella handy. Additionally, the air tends to be quite moist, with an average humidity of 77%.

May Temperature in Wellington

In May in Wellington, the average temperature is 15°C (59°F). Maximum temperatures can reach 31°C (88°F), while the minimum can drop as low as 2°C (35°F). Be sure to pack layers for your trip, as the weather can vary greatly throughout the day.

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

The chart illustrates May 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, May typically has an average temperature of 15°C (59°F), with highs reaching up to 31°C (88°F) and lows dropping to around 2°C (35°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.

May Precipitation in Wellington

In Wellington in May, the precipitation amount is 80 mm (3.2 in) over a span of 6 days.

May Precipitation Trends in Wellington

The chart displays monthly precipitation patterns in Wellington, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Wellington, May typically receives around 80 mm (3.2 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec21103036801481319560515130
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Wellington

In Wellington in May, humidity is 77%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making it essential to stay hydrated and choose light, breathable clothing for comfortable travel.

May Average Humidity in Wellington

This chart illustrates the average monthly humidity levels in Wellington, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Wellington is approximately 77%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Wellington

In Wellington in May, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Wellington.

Maximum UV Index Levels in Wellington for May

The chart shows the monthly maximum UV Index (UVI) for Wellington in May, 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 May, the maximum UV index in Wellington typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141311854469111214
Data source: Wellington May 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 May 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 May’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 May’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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