Last updated: August 31, 2025
Experience the diverse and intriguing weather of Graaff-Reinet, South Africa in September, where temperatures can soar to a scorching 37°C (99°F) during the day and drop to a chilly -2°C (29°F) at night. The month boasts an average temperature of 15°C (60°F), providing a unique contrast that showcases the region's climatic variability. Although precipitation is relatively light, with 27 mm (1.1 in) over just 4 days, humidity levels soar to a notable 77%, adding a distinct freshness to the air. September in Graaff-Reinet is a fascinating blend of warmth and coolness, perfect for those looking to explore this historic town's beauty.
In September, Graaff-Reinet begins to shake off the winter chill, with temperatures slowly rising as spring approaches. The month typically starts with crisp mornings, where temperatures dip to a minimum of -2°C (29°F), but by midday, the average climbs to a pleasant 15°C (60°F). The days can still get surprisingly warm, peaking at a maximum of 37°C (99°F), creating a delightful contrast that invites residents and visitors alike to enjoy the outdoors. This transition month hints at the warmer days ahead, while still holding onto a touch of winter's cool embrace.
In September, Graaff-Reinet experiences a gentle increase in precipitation, recording 27 mm (1.1 in) of rainfall over four days. This uptick follows a notably dry winter, where June and July saw minimal rainfall of just 3 mm and 9 mm, respectively. As the transition to spring unfolds, September's modest rainfall contributes to the overall trend of increasing precipitation, setting the stage for the wetter months ahead. The shift from winter dryness to the more balanced conditions of spring signals a hopeful rejuvenation for local flora and fauna, paving the way for a vibrant landscape as October's rainfall typically rises further to around 40 mm.
September in Graaff-Reinet sees a humidity level of 77%, reflecting a slight increase from the drier month of August, which experienced a low of 68%. As we transition from winter to spring, this uptick hints at the approaching warmth and moisture of the upcoming months. Interestingly, September's humidity is part of a consistent trend, where levels remain relatively high throughout the first half of the year, peaking in the wetter months of March and April at 84%. This pattern suggests that while the town enjoys a reprieve in mid-year, humidity steadily climbs again as it reaches towards the summer season, making the air feel more invigorating and alive.
In September, Graaff-Reinet experiences a UV Index of 10, categorizing it as very high exposure, with a burn time of just 15 minutes. This marks a notable transition as the region moves from the more intense summer months, where UV levels peak at a striking 15 in January. Following a slight dip during the winter months of June and July, where the UV Index remains at a moderate 4, September sees a jump, signaling the approach of warmer weather. As we progress into spring, it's important for residents and visitors alike to remain vigilant about sun protection, especially as the UV Index is set to rise again in October. For more detailed information on UV levels, check out Graaff-Reinet UV Index.
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As September rolls into Graaff-Reinet, the sunshine hours provide a warm transition into spring, with 332 hours of radiant sunlight gracing the town. This month showcases a delightful consistency in basking under the sun, just slightly below the summer peak of 344 hours in February and a noteworthy increase from the cooler winter months. Following a steady ascent from the winter lows of 288 hours in June, September marks a refreshing return to warmth, setting the stage for the sun-drenched months ahead. With October and November promising even more hours of sunlight, Graaff-Reinet is primed for vibrant outdoor activities and exploration, allowing both locals and visitors to fully embrace the beauty of the season.
In Graaff-Reinet, September brings a 55% chance of sunny weather, reflecting a notable dip compared to the warmer months preceding it. This is part of a trend where the likelihood of sunshine peaks in the winter months of June and July, reaching 75% and 79%, respectively. As the seasons transition, the chances of sunlight taper off, with September's probabilities aligning more closely with the late spring months like November. While the sun might not shine as consistently as in mid-winter or early autumn, there’s still ample opportunity for blue skies amidst the approaching springtime changes.
As September dawns in Graaff-Reinet, South Africa, the daylight gradually begins to stretch, offering 11 hours of sunshine—a welcome increase compared to the 10 hours experienced in the preceding winter months. This subtle transition marks the onset of spring, hinting at the longer and warmer days that lie ahead. Following September, daylight continues its upward trajectory, reaching 12 hours in October and peaking at 14 hours in December. The trend showcases a rhythmic shift from the shorter days of winter towards the abundant light of summer, reflecting the region’s vibrant seasonal changes.
As September arrives in Graaff-Reinet, South Africa, the wind begins to whisper with an average speed of 3.0 m/s (7 mph), gracefully continuing the trend established over the past few months. The steady breeze, consistent with the wind patterns of August and enveloped within a backdrop of warming temperatures, contributes to the delightful charm of late winter transitioning into spring. This gentle wind reflects a subtle increase in strength since the cooler months, gently rustling the leaves and enhancing the serene ambiance of the historical town. Overall, September boasts a refreshing and invigorating breath of air, reiterating the area's characteristic mild climate before the shift into the hotter months ahead.
Weather in Graaff-Reinet varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Graaff-Reinet, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in September and January, there are notable differences in temperature and precipitation patterns. September experiences a broader range of temperatures, with a minimum of -2°C (29°F) and a maximum of 37°C (99°F), while January's temperatures are milder, ranging from 9°C (48°F) to a high of 40°C (104°F). Despite January's warmer average temperature of 23°C (73°F), it also sees increased precipitation, with 54 mm (2.1 in) of rain over 8 days, compared to September's 27 mm (1.1 in) over just 4 days. Interestingly, humidity levels remain relatively similar across both months, with September at 77% and January slightly lower at 76%. For a more detailed look at January weather, you can visit Graaff-Reinet weather in January.
September weather typically exhibits a broader temperature range, with minimums dropping as low as -2°C (29°F) and maximums reaching up to 37°C (99°F). This month sees relatively low precipitation at 27 mm (1.1 in), occurring on just four days, and humidity levels are quite high at 77%. In contrast, February presents a milder climate overall, featuring higher average temperatures ranging from a minimum of 8°C (46°F) to a maximum of 40°C (105°F). Precipitation also increases significantly to 68 mm (2.7 in), spread over 11 days, while humidity remains close at 75%. For more detailed information, you can visit Graaff-Reinet weather in February.
In September, temperatures in Graaff-Reinet range from a chilly -2°C (29°F) to a warm 37°C (99°F), with an average of 15°C (60°F). The month sees relatively low precipitation, totaling 27 mm (1.1 in) over just 4 days, accompanied by a humidity level of 77%. In contrast, March experiences milder temperatures, with a minimum of 5°C (42°F) and a maximum of 40°C (104°F), averaging around 21°C (70°F). It also has higher precipitation, reaching 44 mm (1.7 in) over 8 days, and increased humidity at 84%. For more details on March weather, visit Graaff-Reinet weather in March.
When comparing the weather between September and April, we see several notable differences. In September, temperatures range from a minimum of -2°C (29°F) to a maximum of 37°C (99°F), with an average of 15°C (60°F). In contrast, April experiences slightly milder conditions with temperatures ranging from a minimum of 3°C (38°F) to the same maximum of 37°C (99°F), but an increased average of 17°C (63°F).
Precipitation is also more prevalent in April, with 34 mm (1.3 in) falling over six days, compared to September's 27 mm (1.1 in) over just four days. Humidity levels are higher in April at 84%, while September has a slightly lower humidity of 77%. For more detailed insights on April’s weather, you can refer to Graaff-Reinet weather in April.
In comparing the weather between September and May, both months showcase similar average temperatures around 15°C (60°F). However, September experiences a wider temperature range with minimums as low as -2°C (29°F) and maximums reaching up to 37°C (99°F), making it more variable. In contrast, May has minimum temperatures of 1°C (33°F) and maximums of 31°C (87°F), indicating a milder climate overall. Precipitation is slightly higher in September at 27 mm (1.1 in) over 4 days compared to May's 14 mm (0.6 in) over 3 days, though humidity levels remain comparable with September at 77% and May at 83%. For a more detailed look at May weather specifics, please refer to Graaff-Reinet weather in May.
When comparing the weather in September and June, September tends to be warmer and experiences a wider temperature range. In September, temperatures can drop to as low as -2°C (29°F) during the night, but can soar up to 37°C (99°F) during the day, with an average temperature of 15°C (60°F). In contrast, June features slightly cooler temperatures, with a minimum of -3°C (26°F) and a maximum of 29°C (84°F), and an average of 12°C (55°F). Additionally, September receives more rainfall, averaging 27 mm over four days, while June remains relatively dry with only 3 mm of precipitation across just one day. Humidity levels are similar between the two months, with September at 77% and June at 79%. For a more detailed view of June's weather, you can check Graaff-Reinet weather in June.
When comparing the weather in September to that of July, we see notable differences in temperatures and precipitation. September experiences a wider temperature range, with a minimum of -2°C (29°F) and a maximum reaching up to 37°C (99°F), while July's temperatures are cooler, with a minimum of -5°C (24°F) and a maximum of 28°C (83°F). Additionally, September sees slightly more precipitation at 27 mm (1.1 in) over four days, compared to July's 9 mm (0.4 in) over just two days. Both months share the same humidity level of 77%, creating similar moisture content in the air despite the differences in temperature and rainfall. For a detailed overview of July weather, you can check out Graaff-Reinet weather in July.
September weather in Graaff-Reinet exhibits a broader temperature range compared to August, with a minimum of -2°C (29°F) and a maximum soaring to 37°C (99°F), resulting in an average temperature of 15°C (60°F). In contrast, August maintains lower temperatures, ranging from -2°C (29°F) to a maximum of 32°C (89°F) and an average of 12°C (53°F). Additionally, September experiences slightly higher precipitation at 27 mm (1.1 in) across four days, while August records 18 mm (0.7 in) over the same number of days, although humidity is notably higher in September at 77% compared to August's 68%. For more specifics, you can refer to Graaff-Reinet weather in August.
In September, the weather showcases a broader temperature range, with minimums dipping to -2°C (29°F) and maximums reaching up to 37°C (99°F). The average temperature sits around a comfortable 15°C (60°F), accompanied by relatively low precipitation of 27 mm (1.1 in) over just 4 days and a humidity level of 77%.
In contrast, October experiences milder minimums at 2°C (36°F) and slightly higher maximum temperatures peaking at 39°C (102°F), reflecting a warmer average of 18°C (64°F). However, October sees an increase in precipitation, totaling 40 mm (1.6 in) over 6 days, while humidity decreases to 72%. For more detailed insights, check out Graaff-Reinet weather in October.
In comparing the weather of September and November, September typically experiences a broader temperature range, with minimums reaching as low as -2°C (29°F) and maximums peaking at 37°C (99°F), resulting in an average temperature of 15°C (60°F). In contrast, November sees milder minimum temperatures at 4°C (39°F) and averages around 19°C (66°F), with the maximum temperatures rising slightly higher to 40°C (104°F). Precipitation increases in November, amounting to 40 mm (1.6 in) over 6 days compared to September's 27 mm (1.1 in) spread over 4 days, while humidity is slightly lower in November at 73% compared to 77% in September. For more detailed information, check Graaff-Reinet weather in November.
In September, the weather in Graaff-Reinet tends to be cooler, with temperatures ranging from a chilly minimum of -2°C (29°F) to a warm maximum of 37°C (99°F) and an average of 15°C (60°F). During this month, the area experiences 27 mm (1.1 in) of precipitation over about four days, coupled with relatively high humidity at 77%. In contrast, December brings a milder climate, with temperatures starting from 7°C (45°F), peaking at 40°C (104°F), and averaging 21°C (70°F). The precipitation increases to 59 mm (2.3 in) over eight days, while humidity slightly decreases to 73%. For a more detailed look at December weather patterns, you can visit Graaff-Reinet weather in December.
As September unfolds in Graaff-Reinet, the weather presents a dynamic transition from the chill of winter to the warmth of spring. With average temperatures around a mild 15°C (60°F), days can soar to a scorching 37°C (99°F), offering a stark contrast to the cooler months. The crisp morning air can even dip to a brisk -2°C (29°F) at night, showcasing the region's fluctuating climate. Rainfall is relatively modest, with only about 27 mm (1.1 in) over four days, and humidity sits at a high 77%, lending a touch of moisture to the warming days. This blend of warmth and occasional coolness makes September a unique precursor to the summer heat that looms in the months ahead. For more insights into the climate trends of the area, check out Graaff-Reinet Climate.