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September Weather in Mandeni, South Africa

Last updated: August 31, 2025

In September, the average temperature in Mandeni, South Africa is a pleasant 20°C (68°F). Expect a range between a comfortable 14°C (57°F) and a warm 33°C (91°F). While you enjoy the mild climate, be prepared for 75 mm (3.0 in) of precipitation over about 10 days, with an average humidity level of 85% adding to the tropical feel.

September Temperature in Mandeni

In September in Mandeni, the average temperature is 20°C (68°F), with maximums reaching 33°C (91°F) and minimums dipping as low as 14°C (57°F). This mild climate makes Mandeni an ideal destination for travelers looking to enjoy pleasant outdoor activities during this time.

September Weather in Mandeni: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Mandeni, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mandeni, September typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (91°F) and lows dropping to around 14°C (57°F).
JanFebMarAprMayJunJulAugSepOctNovDec767776736966656668697174
Data source: Temperature data for Mandeni 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.

September Precipitation in Mandeni

In Mandeni in September, the precipitation amount is 75 mm (3.0 in) spread over a duration of 10 days.

September Precipitation Trends in Mandeni

The chart displays monthly precipitation patterns in Mandeni, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Mandeni, September typically receives around 75 mm (3.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec79142898912137245075106129110
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mandeni

In Mandeni in September, humidity is 85%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky blanket enveloping you, making outdoor activities quite uncomfortable and prompting travelers to seek shade and hydration more frequently.

September Average Humidity in Mandeni

This chart illustrates the average monthly humidity levels in Mandeni, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Mandeni is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%86%86%80%80%80%85%86%87%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mandeni

In Mandeni in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Mandeni.

Maximum UV Index Levels in Mandeni for September

The chart shows the monthly maximum UV Index (UVI) for Mandeni in September, 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 September, the maximum UV index in Mandeni typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141412964579111314
Data source: Mandeni September 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 September Weather in Mandeni Compares to Other Months

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

This table compares monthly weather conditions in Mandeni, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (76°F)79 mm (3.1 inches)85%extreme
February Weather25°C (77°F)142 mm (5.6 inches)86%extreme
March Weather24°C (76°F)89 mm (3.5 inches)86%extreme
April Weather23°C (73°F)89 mm (3.5 inches)86%very high
May Weather21°C (70°F)121 mm (4.7 inches)86%high
June Weather19°C (67°F)37 mm (1.5 inches)80%moderate
July Weather18°C (66°F)24 mm (0.9 inches)80%moderate
August Weather19°C (66°F)50 mm (2.0 inches)79%high
September Weather20°C (68°F)75 mm (3.0 inches)85%very high
October Weather20°C (69°F)105 mm (4.2 inches)86%extreme
November Weather22°C (71°F)129 mm (5.1 inches)87%extreme
December Weather23°C (74°F)110 mm (4.3 inches)86%extreme

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