Last updated: August 31, 2025
In September, Clanwilliam, South Africa experiences a unique blend of temperatures that highlight the transition from winter to spring. The days can reach a maximum of 34°C (93°F), while the nights cool down significantly, averaging around 14°C (57°F) and dropping to a minimum of 0°C (33°F). With humidity levels at 74%, the air can feel quite rich. The region receives approximately 19 mm (0.7 in) of precipitation, spread over 4 days, making this month a refreshing period amidst a mostly dry climate. This mix of warm days and chilly nights, coupled with occasional rain, creates a vibrant atmosphere in Clanwilliam as it awakens to spring's embrace.
As September unfolds in Clanwilliam, South Africa, the weather begins its gentle transition into spring. With minimum temperatures hovering around 0°C (33°F), chilly mornings give way to more comfortable afternoons, boasting an average of 14°C (57°F). The days start to warm up significantly, peaking at a pleasant 34°C (93°F), hinting at the hotter months ahead. This month marks a noticeable rise from the winter chill of July and August, where temperatures barely reached above 11°C (52°F). September offers a delightful balance, inviting outdoor adventures and showcasing the region's natural beauty as the landscape awakens from winter's slumber.
In September, Clanwilliam experiences a modest uptick in precipitation, receiving 19 mm (0.7 in) of rainfall over four days. This marks a slight increase compared to the drier months of the preceding winter, with August yielding 37 mm and the subsequent October expecting around 21 mm. September's rainfall sets the stage for the transition into spring, hinting at the reawakening of vegetation after the dry winter months. This gradual increase in precipitation not only signifies the changing seasons but also provides essential moisture that nourishes the local flora, ensuring the region's natural beauty continues to thrive as summer approaches.
As the seasons transition in Clanwilliam, South Africa, September experiences a notable shift in humidity levels, settling at 74%. This figure follows a gradual decline from the summer’s peak humidity, which reached a high of 82% during the winter months of June and July. Transitioning through the late winter and into early spring, humidity levels start to drop from August's 78%. The decrease indicates a shift toward drier conditions as October approaches, which sees humidity levels further fall to 67%. This pattern reflects the changing climate typical for the region, with September marking a bridge between the dampness of winter and the crispness of the upcoming spring.
In September, Clanwilliam experiences a UV Index of 9, categorizing it as very high with a burn time of just 15 minutes. This marks a transition from the moderate levels of winter to heightened sun exposure, as the region prepares for the intense summer months ahead. The trend shows that after the cooler months of June and July, where the UV Index dipped to 4, there’s a noticeable increase back to high levels, echoing the patterns observed in previous years where early spring signals a rise in UV intensity. As the days grow longer and the sun’s rays become more potent, it's crucial to stay vigilant and protect your skin. For more detailed insights and updates on UV levels, check out Clanwilliam UV Index.
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As September settles in Clanwilliam, the days start to bask in golden sunlight, with 329 hours of sunshine marking a delightful transition from the colder months. Following a steady decline in hours from May's peak of 298 hours, the trend begins to rise again as the vibrant colors of spring awaken the region. While July and August experience a slight dip, September serves as an inviting bridge to the longer, sunnier days ahead, hinting at the upcoming October surge with 374 hours. This gradual increase reflects a consistent pattern of warmth and brightness, setting the stage for a beautifully radiant spring and the approaching festive summer months in this picturesque South African town.
In Clanwilliam, South Africa, September marks the transition into spring, where the likelihood of sunny days begins to wane slightly with a 62% chance of sunshine. This reflects a downward trend from the peak summer months of January and February, which boast impressive sun exposure at 91% and 90% respectively. Following the vibrant summer, sunny probabilities gradually decrease through the autumn months, reaching their lowest point in late winter and early spring. By September, the enchantment of longer, sunnier days gives way to a mix of variability, hinting at the impending rains of October and beyond. Despite this dip, September still offers plenty of opportunities for enjoying the beautiful weather that has become a hallmark of Clanwilliam.
As September unfolds in Clanwilliam, South Africa, daylight begins to stretch once more, offering 11 hours of sun-filled skies. This marks a subtle increase from the cooler, shorter days of winter, as the region transitions into spring. Following the consistent pattern of the previous months, where daylight dwindled to around 10 hours during the depths of winter, September's slight gain signals the approach of longer days ahead. With daylight duration gradually extending, residents and visitors alike can enjoy the gradual reawakening of nature, paving the way for the vibrant blooms and warm afternoons that characterize the upcoming months of October and November, boasting 12 and 13 hours of daylight respectively.
As September rolls into Clanwilliam, the winds begin to pick up slightly, averaging 2.6 m/s (6 mph), providing a gentle breeze that whispers promises of change. Following a gradual decline in wind speeds from March to August, this month marks a subtle rebound, hinting at the transition to the blusterier months ahead. The wind's rhythm exhibits a slight oscillation, with a gradual increase seen in October and November, reaching an average of 2.9 m/s (6 mph) by late spring. This seasonal shift not only invigorates the landscape but also sets the stage for the warm summer months, reminding us of nature's ever-changing dance in the heart of South Africa.
Weather in Clanwilliam varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Clanwilliam, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January showcase distinct shifts in weather patterns. In September, temperatures range from a cool 0°C (33°F) to a warm 34°C (93°F), averaging 14°C (57°F), with relatively high humidity at 74%. The month sees about 19 mm (0.7 in) of precipitation over four days. In contrast, January experiences milder temperatures, with a minimum of 9°C (48°F) and a maximum of 39°C (102°F), averaging 23°C (74°F). This month has less rainfall, at 12 mm (0.5 in) over just two days, and the humidity drops to 62%. For more detailed information, you can check the Clanwilliam weather in January.
In September, temperatures in Clanwilliam range from a cool 0°C (33°F) to a warm 34°C (93°F), with an average of 14°C (57°F). This month experiences 19 mm (0.7 in) of precipitation over typically 4 days, coupled with a relatively high humidity of 74%. In contrast, February brings significantly warmer temperatures, with a minimum of 10°C (50°F) and a maximum reaching up to 39°C (102°F), averaging 24°C (75°F). Precipitation drops to just 4 mm (0.2 in) over only 1 day, and humidity decreases to 62%. For a more detailed look at February weather in Clanwilliam, visit Clanwilliam weather in February.
In comparing September and March weather, we see notable differences in temperature and overall climate conditions. September typically features a wider temperature range, with lows dropping to 0°C (33°F) and maximums reaching up to 34°C (93°F), while March maintains milder temperatures, starting from a minimum of 8°C (47°F) and peaking at 38°C (101°F). Both months see similar precipitation levels—19 mm in September and 18 mm in March—but September experiences slightly more rainy days (4 days vs. 2 days in March). Additionally, humidity is relatively close between the two months, with September at 74% and March at 70%. For more information on weather patterns in March, you can visit Clanwilliam weather in March.
When comparing the weather of September and April, we observe notable differences. September experiences a wider temperature range with a minimum of 0°C (33°F) and a maximum of 34°C (93°F), resulting in a lower average temperature of 14°C (57°F). In contrast, April tends to be warmer with a minimum of 5°C (40°F) and a higher maximum of 36°C (96°F), leading to a more comfortable average of 19°C (66°F). While September receives slightly more precipitation at 19 mm (0.7 in) over 4 days, April has less with 14 mm (0.5 in) across 3 days, making both months relatively dry overall. Humidity is similar, with September at 74% and April at 72%. For a more specific look at April conditions, you can refer to Clanwilliam weather in April.
September and May present distinct weather patterns, with September showcasing a broader temperature range. In September, temperatures can dip as low as 0°C (33°F) and soar to a maximum of 34°C (93°F), averaging around 14°C (57°F). In contrast, May starts from a slightly milder minimum of 3°C (38°F) and peaks at 31°C (89°F), with an average of 15°C (60°F). Precipitation levels are higher in May, totaling 32 mm (1.2 in) across four days, compared to just 19 mm (0.7 in) in September, which also has four rainy days. Humidity levels are relatively similar, with September at 74% and May slightly higher at 77%. For more specific details on May weather, you can visit Clanwilliam weather in May.
In comparing the weather of September and June, September typically presents a wider temperature range, with minimums around 0°C (33°F) and maximums peaking at 34°C (93°F), contributing to an average of 14°C (57°F). This month experiences relatively low precipitation at 19 mm (0.7 in) over about 4 days, making for a drier climate despite a humidity level of 74%. In contrast, June sees cooler temperatures, with minimums dropping to -1°C (31°F) and maximums reaching 29°C (84°F), averaging at 12°C (54°F). However, it has significantly higher precipitation, recording 66 mm (2.6 in) over 8 days and maintaining a higher humidity at 82%. For those interested in more detailed weather patterns specific to June, you can find additional information here: Clanwilliam weather in June.
When comparing the weather in September and July, September generally feels warmer with an average temperature of 14°C (57°F), peaking at a maximum of 34°C (93°F). In contrast, July tends to be cooler, with an average temperature of 11°C (52°F) and a maximum of 27°C (81°F). Precipitation levels are also notably different; September has 19 mm (0.7 in) of rain over 4 days, while July sees significantly more rainfall at 63 mm (2.5 in) across 6 days. Additionally, July experiences slightly higher humidity at 82%, compared to September's 74%. For more detailed information on July weather, visit Clanwilliam weather in July.
In comparing the weather of September and August, September presents warmer conditions with a minimum temperature of 0°C (33°F) and an average of 14°C (57°F), while August experiences slightly cooler temperatures with a minimum of -2°C (29°F) and an average of 11°C (51°F). The maximum temperature in September reaches up to 34°C (93°F), contrasting with August's peak of 28°C (83°F). Additionally, September sees less precipitation, with only 19 mm (0.7 in) over four days, compared to August's 37 mm (1.4 in) across seven days. Humidity levels are fairly similar, with September at 74% and August at 78%. For more detailed insights, you can check Clanwilliam weather in August.
September and October present notable contrasts in weather patterns. In September, temperatures range from a chilly minimum of 0°C (33°F) to a warm maximum of 34°C (93°F), with an average of 14°C (57°F). The month sees light precipitation of 19 mm (0.7 in) over four days, accompanied by a humidity level of 74%. In contrast, October brings slightly warmer conditions, with minimum temperatures at 2°C (36°F), an average of 17°C (63°F), and a striking maximum of 38°C (101°F). Precipitation increases minimally to 21 mm (0.8 in) while the number of rainy days remains the same. Humidity drops to a more comfortable 67%, making October a month of warm and drier weather relative to September. For more detailed insights, you can visit Clanwilliam weather in October.
September weather features a wide temperature range, with minimums dropping to 0°C (33°F) and maximums soaring up to 34°C (93°F), resulting in an average of around 14°C (57°F). With 19 mm (0.7 in) of precipitation over four days, the month sees fairly high humidity levels at 74%.
In contrast, November brings milder temperatures, with minimums at 4°C (39°F) and maximums reaching 37°C (99°F), leading to a pleasant average of 19°C (67°F). Although slightly wetter, with 23 mm (0.9 in) of rain across just three days, the humidity decreases to a more comfortable 61%. For a detailed look at November's weather, you can check Clanwilliam weather in November.
In September, the weather showcases a wider range of temperatures, with a minimum of 0°C (33°F) and a maximum of 34°C (93°F), averaging around 14°C (57°F). The month experiences a higher humidity level of 74%, along with 19 mm (0.7 in) of precipitation over four days. In contrast, December presents a warmer climate, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 39°C (102°F), averaging 21°C (70°F). December is slightly drier, recording only 16 mm (0.6 in) of precipitation over just two days, and boasts lower humidity at 60%. For more details, visit Clanwilliam weather in December.
As September unfolds in Clanwilliam, the weather transitions markedly from the cooler winter months to the warmer springs, with temperatures showing a remarkable rise from previous lows. Daily highs can touch 34°C (93°F), creating a stark contrast to the chillier averages of earlier months. Although there's a slight increase in humidity at 74%, the overall feel is invigorating, with just a modest 19 mm of precipitation spread over four days, signaling the end of dry season. This combination of warmth and occasional rain invigorates the landscape, setting the stage for a vibrant spring. For a deeper understanding of how these weather patterns shape the region, visit Clanwilliam Climate.