September Weather in Rustenburg, South Africa

Last updated: August 31, 2025

September in Rustenburg, South Africa is characterized by warm days and cool nights, with temperatures reaching a maximum of 35°C (96°F) and dipping to a minimum of 3°C (38°F). The average temperature for the month settles around a comfortable 20°C (68°F), making it an enjoyable time for outdoor activities. Rainfall is minimal, with a total precipitation of just 4 mm (0.2 in) over the course of 1 day, and the humidity levels hover around 49%, adding to the pleasant atmosphere. This combination of warmth and low precipitation makes September a particularly appealing month in Rustenburg.

September Temperature in Rustenburg

As September unfolds in Rustenburg, South Africa, it marks a refreshing transition from the winter chill to the warmth of spring. With temperatures ranging from a low of 3°C (38°F) to a high of 35°C (96°F), residents and visitors can enjoy pleasantly mild days, where the average temperature hovers around 20°C (68°F). This month sees a noticeable uplift in warmth compared to the preceding winter months, with daytime highs rapidly approaching summer levels reminiscent of earlier months like January. The gradual increase in temperature allows for outdoor activities to thrive, making September an ideal time to explore the vibrant landscapes and natural beauty that Rustenburg has to offer, all while basking in the comfortable climate.

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

The chart illustrates September temperature patterns in Rustenburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rustenburg, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec747371656055546168717373
Data source: Temperature data for Rustenburg 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 Rustenburg

In Rustenburg, South Africa, September marks a significant transition in the precipitation pattern as the dry winter months give way to the promise of spring. This month sees a modest rainfall of 4 mm (0.2 in), falling on only one day. Compared to the heavier showers of earlier months—such as January’s 106 mm and February’s 120 mm—September's precipitation is light, signaling a gradual shift towards the wetter season ahead. The trend is reminiscent of the previous winter months where rainfall was scarce, with July and August receiving merely 2 mm (0.1 in) and 1 mm (0.1 in) respectively. As the region approaches October, anticipation builds for an increase in rainfall, setting the stage for a vibrant and lush landscape.

September Precipitation Trends in Rustenburg

The chart displays monthly precipitation patterns in Rustenburg, 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 Rustenburg, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec1061205439962144566124
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rustenburg

In September, Rustenburg experiences a slight increase in humidity, settling at 49%. This shift marks a transition away from the drier August, which recorded the lowest humidity level at 45% for the year. As the seasons change, humidity levels gradually rise, hinting at the approaching warmth of spring. Generally, the early months of the year maintain higher humidity levels, peaking at around 67% in March, before tapering off toward the mid-year months. However, September's humidity remains comfortably moderate, creating a pleasant atmosphere as the days grow longer and the landscape begins to bloom anew.

September Average Humidity in Rustenburg

This chart illustrates the average monthly humidity levels in Rustenburg, 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 Rustenburg is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec66%66%67%61%56%56%55%45%49%47%53%64%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rustenburg

In September, Rustenburg experiences a UV Index of 11, categorizing it as extreme with a burn time of just 10 minutes. This month marks a slight dip in UV levels compared to the peak summer months of January through March, where indices soared to a staggering 16. However, September's UV intensity reflects a consistent trend of high exposure in the spring, which continues into October and November. As the warmer seasons approach, residents and visitors alike should remain vigilant, considering the short burn time and potential for skin damage. For more detailed information, visit the Rustenburg UV Index.

Maximum UV Index Levels in Rustenburg for September

The chart shows the monthly maximum UV Index (UVI) for Rustenburg 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 Rustenburg typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16151310766911131416
Data source: Rustenburg 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.

September Sunshine in Rustenburg

September in Rustenburg, South Africa, basks in 338 hours of sunshine, a delightful continuation of the region's vibrant weather patterns as it transitions from winter to spring. The month showcases a gradual increase in daylight, with sunshine hours steadily rising since June's low of 300 hours. This trend reflects the shifting seasons, as sunshine peaks in the coming months, leading into October and November, which enjoy their own luminous crescendo with hours reaching 369 and 375 respectively. As the days grow longer, Rustenburg's landscapes become more vibrant, inviting both locals and visitors out to enjoy the blooming beauty of the area.

Monthly Sunshine Duration in Rustenburg: September Highlighted

The September sunshine duration represents the total number of hours Rustenburg experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec308h318h356h321h321h300h315h330h338h369h375h376h
Data source: Rustenburg September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Rustenburg During September

September in Rustenburg, South Africa, boasts a notably high chance of sunshine, with an impressive 84% likelihood of clear skies. This trend of sunny weather builds positively throughout the year, starting from a mere 29% in January and gradually rising as the months progress, peaking at 96% in July. After a slight dip in October, the sunshine opportunities remain quite favorable as we head into spring. Observing the overall pattern, it’s clear that September lies comfortably among the sunniest months, signaling the onset of warmer days and inviting outdoor activities for residents and visitors alike.

Percentage of Sunny Days in September in Rustenburg

The chart illustrates the percentage of sunny days in Rustenburg throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Rustenburg experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec29%37%68%82%83%85%96%83%85%64%62%45%
Data source: Rustenburg September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Rustenburg in September

In September, Rustenburg basks in approximately 11 hours of daylight, marking a transitional moment as the seasons shift towards spring. This month sees a slight increase in light compared to the winter months of June and July, which both offer 10 hours of daylight. As the days slowly grow longer, September serves as a bridge, hinting at the longer luminous days to come in October and November. The gradual transition from the shorter days of mid-year to the vibrant, sunlit hours of late spring sets a delightful tone, inviting residents and visitors alike to enjoy the mild weather and the beauty of nature awakening around them.

Average Daylight Hours in Rustenburg for September

The chart illustrates the variation in daylight duration in Rustenburg throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 31m12h 56m12h 12m11h 27m10h 50m10h 32m10h 42m11h 14m11h 56m12h 41m13h 21m13h 41m
Data source: Rustenburg daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Rustenburg

As September arrives in Rustenburg, the wind begins to pick up, with average speeds reaching 3.0 m/s (7 mph). This slight increase from August's 3.1 m/s (7 mph) marks a continued trend towards breezier conditions as the year progresses. Following a gradual rise from the calm of the earlier months, where January through April saw averages hover between 2.0 m/s and 2.6 m/s, September's winds hint at the impending shift into spring. The consistent uptick in wind speeds, peaking in October and November, suggests a refreshing change that invigorates the atmosphere in this vibrant South African town. Embracing this transition, residents and visitors alike can look forward to the soft rustle of leaves and the invigorating feel of the wind against their skin.

Average September Wind Speed in Rustenburg

The chart displays monthly wind speed patterns in Rustenburg, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.62.02.02.02.32.32.53.13.0 m/s3.23.32.6
Data source: Rustenburg September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Rustenburg Compares to Other Months

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

September and January present contrasting weather patterns. In September, temperatures range from a cool minimum of 3°C (38°F) to a warm average of 20°C (68°F), with maximum temperatures peaking at 35°C (96°F). The month sees minimal precipitation, averaging only 4 mm (0.2 in) over just one day, while humidity sits at a comfortable 49%. In stark contrast, January experiences significantly higher temperatures, with a minimum of 14°C (57°F) and an average of 23°C (74°F), reaching up to 38°C (100°F). Additionally, January is much wetter, receiving 106 mm (4.2 in) of rainfall over 12 days and higher humidity levels at 66%. For a more detailed look at January weather in Rustenburg, you can visit Rustenburg weather in January.

September and February present strikingly different weather patterns. In September, temperatures can range from a cool 3°C (38°F) at night to a warm average of 20°C (68°F) during the day, peaking at a high of 35°C (96°F). This month experiences minimal precipitation, with only about 4 mm (0.2 inches) falling over just one day, and humidity levels at a comfortable 49%.

In contrast, February is noticeably warmer, with nighttime lows around 13°C (56°F) and daytime averages hitting 23°C (73°F), reaching a maximum of 34°C (94°F). However, it also sees significantly more rainfall, with 120 mm (4.7 inches) spread over 13 days, leading to higher humidity levels at 66%. For more detailed insights, check out Rustenburg weather in February.

When comparing the weather in September and March, we see a noticeable difference in temperature and precipitation. September tends to be cooler, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 35°C (96°F) and an average of 20°C (68°F). The month is relatively dry, with only about 4 mm (0.2 in) of precipitation over just one day, leading to a humidity level of 49%.

In contrast, March experiences a milder temperature range, with a minimum of 10°C (51°F) and an average of 22°C (71°F), peaking at 35°C (95°F). This month sees a significant increase in precipitation, totaling 54 mm (2.1 in) over eight days, resulting in higher humidity levels at 67%. For more detailed information, you can check Rustenburg weather in March.

When comparing the weather in September and April, we notice distinct differences in temperatures and precipitation levels. September typically showcases a wider temperature range, with minimums as low as 3°C (38°F) and maximums reaching up to 35°C (96°F), while averaging around 20°C (68°F). In contrast, April presents milder temperatures, starting from a minimum of 7°C (45°F) and peaking at 32°C (90°F), averaging 19°C (66°F). Another notable difference lies in humidity and rainfall; September enjoys relatively low precipitation at just 4 mm (0.2 in) over 1 day, with a humidity level of 49%. On the other hand, April experiences significantly higher rainfall at 39 mm (1.6 in) spread across 7 days, along with increased humidity at 61%. For more details on April weather, you can visit Rustenburg weather in April.

In comparing the weather of September and May, September generally experiences a wider temperature range, with minimums of 3°C (38°F) and maximums reaching up to 35°C (96°F). In contrast, May's temperatures are milder, ranging from a minimum of 2°C (35°F) to a maximum of 27°C (82°F). Moreover, September boasts relatively low precipitation at just 4 mm (0.2 in) over one day, while May sees a slightly higher rainfall of 9 mm (0.4 in), also over one day. Humidity levels in September average around 49%, whereas May is slightly more humid, averaging 56%. For more detailed information on May weather, you can visit Rustenburg weather in May.

In comparing the weather between September and June, September showcases a wider temperature range, with minimums reaching 3°C (38°F) and maxima soaring to 35°C (96°F), yielding an average of 20°C (68°F). The month experiences relatively low precipitation, only 4 mm (0.2 in) over the course of one day and a humidity level of 49%. In contrast, June offers cooler conditions, with a minimum temperature of 0°C (33°F), an average of 13°C (55°F), and a maximum of 26°C (80°F). June sees slightly higher precipitation at 6 mm (0.2 in), though it remains dry for the entire month, with humidity levels at 56%. For more details, you can check the Rustenburg weather in June.

In comparing the weather between September and July, we see a notable increase in temperatures as September boasts a minimum of 3°C and an average high of 35°C, while July has a cooler average with a minimum of 0°C and a maximum of 26°C. Precipitation is minimal in both months, with September experiencing slightly more rain at 4 mm over one day, compared to July's 2 mm with no rainy days. Additionally, September is less humid, with humidity levels at 49%, while July has a higher humidity of 55%. For those interested in further details about July weather, you can check Rustenburg weather in July.

Comparing the weather in September and August reveals notable differences in temperature and humidity. September experiences a wider temperature range, with a minimum of 3°C (38°F), an average of 20°C (68°F), and a maximum that peaks at 35°C (96°F). In contrast, August has more moderate temperatures ranging from a minimum of 2°C (35°F) to a maximum of 29°C (85°F), with an average of 16°C (61°F). While September sees slightly higher humidity at 49%, August maintains a comfortable 45%. Precipitation is minimal in both months, with September receiving 4 mm (0.2 in) of rain over just one day, and August experiencing only 1 mm (0.1 in) with no rainy days. For a closer look at August's weather, check Rustenburg weather in August.

In comparing the weather of September and October, we see a notable shift. September boasts a minimum temperature of 3°C (38°F) and an average high of 35°C (96°F), with only 4 mm (0.2 in) of precipitation over just one day. In contrast, October experiences slightly warmer temperatures, with a minimum of 7°C (45°F) and an average high of 37°C (98°F), though it brings significantly more rainfall, totaling 45 mm (1.8 in) across six days. Humidity remains relatively consistent between the two months, with September at 49% and October at 47%. For a more detailed look at October's weather, explore Rustenburg weather in October.

In September, the weather features a wide temperature range, with minimums around 3°C (38°F) and maximums reaching up to 35°C (96°F). The month is relatively dry, with only 4 mm of precipitation over just 1 day and humidity sitting at 49%. In contrast, November experiences warmer temperatures overall, with lows of 8°C (46°F) and highs of 36°C (98°F). However, it also sees a significant increase in rainfall, totaling 66 mm across 10 days, and slightly higher humidity at 53%. For a detailed look at November's weather patterns, check Rustenburg weather in November.

In September, the weather is generally warmer, with average temperatures around 20°C (68°F) and a maximum reaching up to 35°C (96°F). There is minimal precipitation, with just 4 mm (0.2 in) over the course of only 1 day, and humidity levels sit at a moderate 49%. In contrast, December brings much warmer temperatures, with averages around 23°C (74°F) and highs that can soar to 38°C (100°F). However, this month is considerably wetter, experiencing 124 mm (4.9 in) of rainfall across 15 days, alongside increased humidity at 64%. For a more detailed look at the December climate, visit Rustenburg weather in December.

Compare Rustenburg's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Rustenburg

As September heralds the arrival of spring in Rustenburg, the weather shifts significantly from the cooler winter months. The days become warmer, with comfortable averages around 20°C, while still giving way to the occasional chill in the evenings. Rainfall remains minimal, with just one day of precipitation, making it a relatively dry month. The moderate humidity of 49% complements the pleasant temperatures, creating a favorable climate for outdoor activities. Overall, September offers a refreshing blend of warmth and tranquility, setting the stage for the vibrant weather of the upcoming months. For more detailed insights, explore the full Rustenburg Climate information.