Last updated: August 31, 2025
In September, Rondebosch, South Africa, experiences a delightful transition into spring, characterized by a maximum temperature of 28°C (82°F) and an average of 15°C (59°F). While the mornings can be crisp, with a minimum temperature dipping to 9°C (48°F), the days warm up beautifully. However, the month is not without its share of moisture; a total of 45 mm (1.8 in) of rainfall occurs over approximately 8 days, contributing to a humid atmosphere, with levels reaching 76%. This blend of mild temperatures and occasional showers creates an inviting and vibrant backdrop for outdoor activities and the blossoming of local flora.
In Rondebosch, South Africa, September marks a transitional phase as winter bids farewell and spring begins to blossom. The temperatures during this month typically range from a minimum of 9°C (48°F) to a maximum of 28°C (82°F), with an average temperature settling around 15°C (59°F). This slight rise from the cooler, wet months of winter is accompanied by longer days and increased sunshine, creating a pleasant environment for outdoor activities. As the landscape awakens from its chilly slumber, locals and visitors alike can relish the mild temperatures and vibrant atmosphere that herald the onset of spring.
In September, Rondebosch experiences a noticeable shift in precipitation as the region transitions from winter to spring. With 45 mm (1.8 in) of rainfall spread over 8 days, the month marks a decline from the heavy showers of the preceding months. This rainfall represents a significant drop compared to the peak of 103 mm (4.1 in) in June, yet it still maintains a robust rhythm that supports the burgeoning spring flora. As the air warms, the steady precipitation hints at the annual cycle of renewal, creating a vibrant backdrop for the coming weeks. This trend of moderate rainfall characterizes September as a time of rejuvenation, setting the stage for the drier months ahead.
As September unfolds in Rondebosch, South Africa, the humidity begins to dip slightly, with levels averaging around 76%. This marks a gentle decline from the more humid summer months, peaking at 81% in March. While September’s figures are among the lower end of the year, they still reflect a notable warmth in the air, transitioning from the lush, moisture-rich atmosphere of winter. Interestingly, this slight reduction in humidity indicates the onset of spring, as the region prepares for a warmer October with a predicted increase back to about 77%. Overall, the humidity here paints a picture of seasonal change, cycling through refreshing highs and comfortable lows, giving Rondebosch its characteristic climate charm.
In September, Rondebosch experiences a UV Index of 9, categorized as very high, with a burn time of just 15 minutes. This marks a notable increase from the winter months of June to August, where the index ranged from 3 to 6, indicating a gradual transition towards the more intense sun exposure typical of the approaching summer. As the UV levels begin to rise again, it’s essential for residents and visitors to remain vigilant about sun safety. This trend of escalating UV Index values continues into the following months, peaking at 14 in January and December. For detailed insights and guidelines on UV exposure, check out Rondebosch UV Index.
UV Risk Categories
As September unfolds in Rondebosch, South Africa, residents can bask in 328 hours of glorious sunshine, a delightful complement to the warming spring weather. This month experiences a notable uptick in sunlight compared to the cooler winter months of June and July, which recorded just 266 and 287 hours, respectively. The gradual increase in daylight hours reflects a consistent trend that peaks dramatically in late spring and summer, with November and December showcasing a stunning 390 and 422 hours of sunshine. September serves as a perfect bridge, hinting at the vibrant sun-soaked days ahead while still holding onto the pleasant remnants of winter's embrace.
September in Rondebosch, South Africa, offers a moderate likelihood of sunny weather with a 57% chance of clear skies. As spring approaches, the sun's presence begins to emerge more prominently compared to the cooler months of winter, reflecting a gradual increase in brightness from the 54% chances observed in the preceding months of August and October. This transitional period signals a shift from the relatively lower probabilities seen in the heart of winter, like June and July, which trailed behind with chances around 54% to 58%. Overall, while September's weather may not promise the sun-soaked certainty of January and February, it does present a promising hint of brighter days ahead, ideal for enjoying Rondebosch's beautiful landscapes.
As September unfolds in Rondebosch, South Africa, the days begin to lengthen, offering 11 hours of daylight—an inviting sign of the approaching spring. This month's daylight marks a subtle transition from the shorter days of winter, enhancing outdoor experiences and ushering in a renewed vibrancy. Following the trend from the previous months, where daylight steadily decreased through winter, September signals the start of a gradual increase, setting the stage for the 12 hours of daylight anticipated in October. This rhythm of daylight not only shapes the local climate but also influences the lifestyle, as residents embrace the changing seasons and the longer, sunlit days ahead.
As September arrives in Rondebosch, South Africa, residents feel a refreshing transition in the air, with average wind speeds reaching 5.7 m/s (13 mph). This slight uptick follows a gradual decline in the previous months, where the winds were gentler, particularly in mid-winter. September's winds signal a shift towards the more invigorating breezes of spring, bridging the gap to the robust winds of late spring and early summer. Notably, the wind speeds in September closely align with those of October and November, hinting at an exciting dynamism in the atmosphere as the seasons change. The gentle whispers of September carry with them a promise of warmth and renewal, marking the onset of a vibrant period in Rondebosch’s climatic rhythm.
Weather in Rondebosch varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Rondebosch, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather begins to transition from winter to spring, with temperatures ranging from a cool 9°C (48°F) to a warm 28°C (82°F) and an average of 15°C (59°F). This month sees moderate rainfall, totaling 45 mm (1.8 in) over about 8 days, alongside a humidity level of 76%. In contrast, January offers a different climate experience, with milder minimum temperatures of 15°C (59°F) and a pleasant average of 20°C (68°F), peaking again at 28°C (82°F). Precipitation drops significantly in January to just 14 mm (0.6 in) over 2 days, maintaining a slightly higher humidity of 77%. For a more in-depth overview of the weather during this time, check Rondebosch weather in January.
September and February present distinct weather patterns. In September, temperatures range from a minimum of 9°C (48°F) to a maximum of 28°C (82°F), with an average of 15°C (59°F), and a total precipitation of 45 mm (1.8 in) spread over 8 days, resulting in a relatively humid atmosphere at 76%. In contrast, February enjoys milder temperatures with a minimum of 15°C (59°F), an average of 20°C (68°F), and a maximum of 27°C (81°F). It also experiences significantly lower precipitation at just 10 mm (0.4 in) over 2 days, along with slightly higher humidity at 80%. For more detailed insights, you can check Rondebosch weather in February.
In comparing the weather between September and March, one can observe a transition in climate. September experiences a broader temperature range, with minimums dipping to 9°C (48°F) and maximums reaching up to 28°C (82°F), while March starts slightly warmer with a minimum of 13°C (56°F) and a similar maximum of 28°C (82°F). Precipitation is more frequent in September, averaging 45 mm over 8 days, compared to March's lighter 24 mm over just 4 days. Humidity levels also rise slightly in March, reaching 81% compared to September's 76%. For a deeper insight into March weather in Rondebosch, feel free to explore Rondebosch weather in March.
When comparing the weather in September to that of April, we notice several distinctions. September tends to be cooler overall, with a minimum temperature of 9°C (48°F) and an average high of 28°C (82°F), while April sees slightly warmer temperatures, with minimums around 11°C (53°F) and a peak of 31°C (88°F). Precipitation is more frequent in September, occurring on 8 days and totaling 45 mm (1.8 in), compared to April's 30 mm (1.2 in) over just 5 days. Humidity levels are relatively high in both months, with September at 76% and April slightly higher at 80%. For more detailed insights on April weather, you can check out Rondebosch weather in April.
In comparing the weather of September and May, both months feature a similar range of temperatures, with September averaging 15°C (59°F) and May slightly warmer at 16°C (60°F). September enjoys a higher maximum temperature of 28°C (82°F), while May peaks at 25°C (78°F). Although September experiences slightly less precipitation at 45 mm (1.8 in) over 8 days, May sees more rain with 63 mm (2.5 in) over 7 days, contributing to a slightly higher humidity level of 78% compared to September's 76%. For a more detailed look at the conditions, check out Rondebosch weather in May.
In comparing the weather between September and June, September generally offers warmer average temperatures, with a minimum of 9°C (48°F), an average of 15°C (59°F), and a maximum of 28°C (82°F). In contrast, June has a slightly cooler average, with temperatures ranging from 9°C (48°F) to a maximum of only 23°C (74°F). However, June experiences significantly more precipitation, with 103 mm (4.1 in) over 11 days, compared to September's 45 mm (1.8 in) on 8 days. Additionally, humidity levels are relatively similar, with September at 76% and June at 79%. For more detailed insights, you can explore the Rondebosch weather in June.
In comparing the weather between July and September, September generally offers warmer temperatures, with a minimum of 9°C (48°F) and a maximum of 28°C (82°F), compared to July's lower range, where the minimum is 7°C (45°F) and the maximum reaches only 24°C (75°F). The average temperature in September is slightly higher at 15°C (59°F) versus July's 14°C (57°F). Additionally, September experiences less rainfall, with 45 mm (1.8 in) over 8 days, compared to July's 95 mm (3.7 in) over 10 days, making September generally drier. However, humidity remains relatively similar, with September at 76% and July at 80%. For more detailed insights about July weather, you can check Rondebosch weather in July.
In comparing the weather between September and August, September boasts slightly warmer temperatures, with an average of 15°C (59°F) compared to August's average of 13°C (56°F). The maximum temperature in September can reach up to 28°C (82°F), while August sees a peak of 24°C (76°F). However, September experiences less rainfall, with 45 mm (1.8 in) on 8 days, in contrast to August's 75 mm (3.0 in) over 11 days. Humidity levels are comparable, with September at 76% and August slightly higher at 77%. For more detailed information about August weather, please visit Rondebosch weather in August.
September and October present a subtle transition in weather conditions. In September, temperatures range from a minimum of 9°C (48°F) to a maximum of 28°C (82°F), with an average of 15°C (59°F). The month experiences approximately 45 mm (1.8 in) of precipitation over 8 days, accompanied by a humidity level of 76%. In contrast, October sees a slight increase in both minimum and average temperatures, with lows around 11°C (51°F) and an average of 16°C (61°F). Although the maximum temperature dips slightly to 27°C (81°F), October only receives about 41 mm (1.6 in) of rain across 5 days, and humidity rises slightly to 77%. For more details on October weather specifics, you can check out Rondebosch weather in October.
In September, temperatures range from a minimum of 9°C (48°F) to a maximum of 28°C (82°F), with an average of 15°C (59°F). The month experiences about 45 mm (1.8 in) of precipitation over 8 days, while humidity levels hover around 76%. In contrast, November sees slightly warmer temperatures, ranging from a minimum of 12°C (53°F) to a maximum of 25°C (77°F), with an average of 17°C (64°F). Precipitation decreases to 33 mm (1.3 in) over only 5 days, and humidity remains relatively steady at 75%. For more detailed information about November weather, you can check Rondebosch weather in November.
In September, the weather features a minimum temperature of 9°C (48°F) and an average of 15°C (59°F), with highs reaching 28°C (82°F). The month experiences around 45 mm (1.8 in) of precipitation over 8 days, coupled with a humidity level of 76%. In contrast, December enjoys warmer conditions, with a minimum of 14°C (58°F), an average of 19°C (66°F), and the same maximum of 28°C (82°F). Precipitation in December is lower at 26 mm (1.0 in), occurring over just 5 days, and the humidity increases slightly to 77%. For a closer look at December's climate specifics, visit Rondebosch weather in December.
As summer approaches in Rondebosch, September ushers in a delightful transition from the cooler winter months. With temperatures reaching a pleasant average of 15°C, this month presents a perfect mix of warmth and refreshing breezes. Although the humidity at 76% can feel a bit muggy at times, it’s balanced by relatively low precipitation, with rain gracing the area on just a handful of days. Unlike the often sweltering summer highs or the chill of winter, September offers a comfortable climate that's ideal for enjoying outdoor activities and the budding spring landscape. For a deeper exploration of what the months ahead hold, check out Rondebosch Climate.