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September Weather in Butterworth, South Africa

Last updated: August 31, 2025

In September, the average temperature in Butterworth, South Africa hovers around 16°C (61°F), with a range between a brisk 2°C (36°F) and a scorching 39°C (103°F). Expect 49 mm (1.9 in) of precipitation spread over approximately 7 days, while the air maintains a humidity level of 79%.

September Temperature in Butterworth

In September in Butterworth, the average temperature is 16°C (61°F), with maximums reaching up to 39°C (103°F) and minimums dropping as low as 2°C (36°F). This wide temperature range makes it essential for travelers to pack accordingly to enjoy their stay comfortably.

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

The chart illustrates September temperature patterns in Butterworth, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Butterworth, September typically has an average temperature of 16°C (61°F), with highs reaching up to 39°C (103°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec696968636158585760626366
Data source: Temperature data for Butterworth 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 Butterworth

In Butterworth in September, the precipitation amount is 49 mm (1.9 in) over the course of 7 days.

September Precipitation Trends in Butterworth

The chart displays monthly precipitation patterns in Butterworth, 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 Butterworth, September typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec1021131081053119725499194121
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Butterworth

In Butterworth in September humidity is 79%. With an average temperature of 16°C (61°F), this humidity feels like a warm, moist embrace, making travel a bit more challenging as the air tends to weigh heavily, but it also offers a refreshing atmosphere perfect for exploring local sights and enjoying nature.

September Average Humidity in Butterworth

This chart illustrates the average monthly humidity levels in Butterworth, 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 Butterworth is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%82%84%82%80%75%75%75%79%80%80%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Butterworth

In Butterworth 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 Butterworth.

Maximum UV Index Levels in Butterworth for September

The chart shows the monthly maximum UV Index (UVI) for Butterworth 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 Butterworth typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141411854469111214
Data source: Butterworth 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 Butterworth Compares to Other Months

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

This table compares monthly weather conditions in Butterworth, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (69°F)102 mm (4.0 inches)81%extreme
February Weather21°C (69°F)113 mm (4.4 inches)82%extreme
March Weather20°C (68°F)108 mm (4.2 inches)84%extreme
April Weather17°C (63°F)105 mm (4.1 inches)82%very high
May Weather16°C (61°F)31 mm (1.2 inches)80%moderate
June Weather14°C (58°F)19 mm (0.7 inches)75%moderate
July Weather14°C (58°F)7 mm (0.3 inches)75%moderate
August Weather14°C (57°F)25 mm (1.0 inches)75%high
September Weather16°C (61°F)49 mm (1.9 inches)79%very high
October Weather17°C (62°F)91 mm (3.6 inches)80%extreme
November Weather17°C (64°F)94 mm (3.7 inches)80%extreme
December Weather19°C (66°F)120 mm (4.7 inches)82%extreme

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