Last updated: August 31, 2025
In September, Grahamstown, South Africa experiences a remarkable range of temperatures, with a maximum soaring to 39°C (102°F) during the warmer days, while the average settles at a comfortable 15°C (60°F), and a chilly minimum dips to 1°C (34°F) at night. This early spring month sees a modest precipitation total of 36 mm (1.4 in) across four days, contributing to a relatively high humidity level of 79%. Embrace the diverse weather as it enhances the beauty of the region, making it a unique experience for residents and visitors alike.
In September, Grahamstown experiences a gradual transition towards warmer weather as winter recedes. With minimum temperatures hovering at a brisk 1°C (34°F) and averages rising to about 15°C (60°F), the city begins to pulse with the approaching spring warmth. Daytime highs can reach up to 39°C (102°F), hinting at the sizzling summer days to come. This month's mild conditions are a refreshing change after the chill of the preceding months, making it an invigorating time for both residents and visitors to enjoy the outdoors. As the air warms and nature awakens, September marks a rejuvenating shift in the climate, setting the stage for the vibrant energy of spring in Grahamstown.
In September, Grahamstown experiences a modest precipitation total of 36 mm (1.4 in), reflecting the transition from winter to spring. This amount is a noticeable increase compared to the drier months of June and July, though it's still lower than the rainfall seen in the earlier months of the year. With precipitation spread over approximately four days, the arrival of spring brings a refreshing change, setting the stage for the more abundant rains of October and November, which typically see 53 mm (2.1 in) each. This steady pattern highlights the gradual return of moisture to the region, revitalizing both the landscape and the local ecosystem after the winter months.
September in Grahamstown, South Africa, typically experiences a humidity level of 79%, which aligns closely with the slightly lower figures seen in the preceding months of August (72%) and July (77%). This marks a gradual transition from the drier conditions of winter, as humidity starts to inch back up towards the spring months. Interestingly, the summer peak in humidity can be seen from January to March, where levels frequently soar above 80%. Overall, the trend highlights a seasonal ebb and flow, emphasizing the region's moist climate as it prepares for the warmer months ahead.
As the seasons shift in Grahamstown, South Africa, the UV Index reflects a notable trend in sun exposure. September brings a UV Index of 9, categorized as very high, with a burn time of 15 minutes—a reminder to stay vigilant against harmful rays. This increase follows the more moderate levels seen in the winter months, where indices lingered around 4 to 6. Contrast this with the peak summer months of January to March, where extreme levels soar up to 15. The transition into spring suggests a gradual rise in UV intensity, emphasizing the importance of sun protection as days grow warmer. For more detailed insights, explore the full report on the Grahamstown UV Index.
UV Risk Categories
September brings a delightful bloom of sunshine to Grahamstown, South Africa, with 320 hours of glorious daylight, marking a pleasant uptick as the seasons transition. Following a steady decline from the summer's peak hours in January, the sunlight hours dipped slightly in the cooler months, reaching a low of 279 hours in June. However, as spring approaches, a noticeable rebound occurs—September's sun shines characteristically brighter, leading to a promising October forecast with even more light on the horizon at 354 hours. This gradual increase not only brightens the landscape but also invigorates the spirit, heralding the vibrant energy of the upcoming warm months.
In Grahamstown, South Africa, September brings a 42% chance of sunny weather, a figure that aligns closely with the months preceding it. As winter transitions to spring, the likelihood of sunshine mirrors that of April's, suggesting a gradual warming trend. Interestingly, September's figures stand out in contrast to the peak sunshine months of July and June, which boast probabilities of 76% and 68%, respectively. This transition hints at the changing seasons, where the crispness of winter begins to give way to warmer, more vibrant days, setting the stage for higher chances of sunlight in the upcoming months. Overall, while sunny spells in September may be moderate, they signal the approach of more favorable weather ahead.
As the seasons change in Grahamstown, South Africa, September marks a transition towards longer days, with 11 hours of daylight. Following the winter months of June and July, which offer just 9 to 10 hours, the daylight begins to extend again in August, preparing for the spring ahead. The gradual increase from September onwards hints at the sunshine to come in October and November, when days lengthen to 12 and 13 hours, respectively. This trend not only brightens the days but also invigorates the local flora and fauna, heralding the arrival of warmer, more vibrant seasons ahead.
As September rolls into Grahamstown, the breeze begins to pick up, with an average wind speed of 3.8 m/s (8 mph). This slight increase from the more calm conditions of late winter signifies a gentle shift toward spring, creating an invigorating atmosphere. Notably, September's winds come after a series of months where the average speed varied moderately, peaking in July at 4.0 m/s (9 mph) and dipping slightly in the preceding months. Looking ahead, this trend of increasing winds seems to foreshadow the more blustery conditions typical of October, which averages 4.1 m/s (9 mph), inviting residents and visitors alike to embrace the lively spirit of the season. Overall, September's winds serve as a refreshing prelude to the vibrant, warmer months on the horizon.
Weather in Grahamstown varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Grahamstown, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures in Grahamstown range from a chilly minimum of 1°C (34°F) to a comfortable average of 15°C (60°F), with the potential for extreme highs of 39°C (102°F). The month experiences a moderate amount of precipitation, totaling 36 mm (1.4 in) over about four days, while humidity sits around 79%. In contrast, January sees a rise in overall temperatures, with a minimum of 9°C (48°F), an average of 21°C (71°F), and soaring to a maximum of 41°C (107°F). Although it is warmer, January also brings increased rainfall, with 50 mm (2.0 in) over nine days, maintaining a slightly higher humidity level of 80%. For more details on temperatures and conditions in January, visit Grahamstown weather in January.
When comparing the weather between September and February, notable differences emerge. September typically sees a wider temperature range, with minimums at 1°C (34°F) and maximums reaching up to 39°C (102°F), averaging around 15°C (60°F). In contrast, February enjoys a milder climate with minimum temperatures of 10°C (50°F) and averages peaking at 21°C (71°F), while maximums can climb to 40°C (104°F). Additionally, February experiences more rainfall, receiving 73 mm (2.9 in) over 11 days compared to September's 36 mm (1.4 in) across just 4 days. Both months share a consistent humidity level of 79%. For more detailed insights, you can check out Grahamstown weather in February.
In comparing the weather of September and March, we see distinct differences in temperature and precipitation. September experiences a temperature range from a cool 1°C (34°F) to a scorching 39°C (102°F), with an average temperature of 15°C (60°F) and relatively low precipitation of 36 mm (1.4 in) over just 4 days. In contrast, March presents a milder climate with minimum temperatures of 8°C (46°F) and an average of 20°C (69°F), peaking at 41°C (107°F). Rainfall is more frequent in March, totaling 52 mm (2.1 in) across 8 days, and the humidity is slightly higher at 86%. For more detailed insights, you can check out Grahamstown weather in March.
When comparing the weather in September and April, one can observe distinct differences in temperature and precipitation patterns. September typically has a wider temperature range, with minimums dropping to 1°C (34°F) and maximums soaring up to 39°C (102°F), while April experiences milder conditions with minimums around 6°C (44°F) and maximums reaching up to 37°C (98°F). Precipitation is slightly higher in April at 45 mm (1.8 in) over 8 days compared to September's 36 mm (1.4 in) over just 4 days. Additionally, humidity levels are slightly elevated in April at 85% compared to September's 79%, making April feel a bit more humid overall. For more details about the specific weather in April, you can visit Grahamstown weather in April.
When comparing the weather in September and May, September tends to showcase a wider temperature range, with lows dipping to 1°C (34°F) and highs soaring up to 39°C (102°F), resulting in an average temperature of 15°C (60°F). In contrast, May generally experiences milder temperatures, with minimums of 4°C (39°F) and maximums reaching 32°C (90°F), averaging 16°C (61°F). Additionally, September sees more precipitation, measuring 36 mm (1.4 in) over about 4 days, compared to May's 22 mm (0.9 in) over approximately 5 days. Humidity levels are slightly lower in September at 79%, while May experiences a higher humidity of 84%. For more detailed information, you can check Grahamstown weather in May.
In comparing the weather patterns of September and June, we see notable differences, especially in temperature and precipitation. September experiences a more extreme temperature range, with a minimum of 1°C (34°F) and a maximum that soars to 39°C (102°F), while June maintains a tighter range with a minimum of 1°C (34°F) and a maximum of 32°C (89°F). Additionally, September records significantly more precipitation at 36 mm (1.4 in) over 4 days, compared to June's 5 mm (0.2 in) over just 2 days. Despite the variation in temperature and rainfall, both months share a consistent humidity level of 79%. For a more detailed look at what to expect during this month, you can check Grahamstown weather in June.
The weather in September is notably warmer than in July, with average temperatures rising to 15°C (60°F) compared to July’s 14°C (57°F). September can experience extremes, with maximum temperatures reaching up to 39°C (102°F), while July peaks at a more moderate 32°C (90°F). Additionally, September sees increased precipitation with 36 mm (1.4 in) over 4 days, compared to the lower 11 mm (0.4 in) over 3 days in July. Humidity levels are slightly higher in September at 79%, compared to 77% in July. For a more detailed look at July's weather patterns, check out Grahamstown weather in July.
In comparing the weather of September and August, September displays a notable increase in average temperature, with a rise from August's average of 13°C (56°F) to 15°C (60°F). Additionally, September experiences a higher maximum temperature of 39°C (102°F), compared to August's peak of 32°C (90°F). Precipitation also sees a slight increase, with September recording 36 mm (1.4 in) over 4 days, while August accounted for 28 mm (1.1 in) over 5 days. Furthermore, September's humidity level is higher at 79%, compared to August's 72%. This shift in weather patterns may indicate a transition towards warmer conditions as the seasons change. For more details, you can check Grahamstown weather in August.
In September, the weather features a minimum temperature of 1°C (34°F) and an average of 15°C (60°F), with maximums reaching up to 39°C (102°F). The month records about 36 mm (1.4 in) of precipitation across 4 days, while humidity levels hover around 79%. In contrast, October sees slightly warmer temperatures, with a minimum of 4°C (40°F), an average of 17°C (63°F), and maximums climbing to 42°C (108°F). Precipitation increases to 53 mm (2.1 in) over 8 days, accompanied by a marginal decrease in humidity to 77%. For more detailed information on the weather in Grahamstown during October, you can visit Grahamstown weather in October.
In September, the weather begins to transition from the peak of summer, with temperatures ranging from a chilly 1°C (34°F) at night to a warm 39°C (102°F) during the day and an average of 15°C (60°F). The month sees relatively low precipitation at 36 mm (1.4 in) over just 4 days, and humidity levels hover around 79%. In contrast, November brings slightly warmer nights with a minimum temperature of 5°C (42°F) and an average of 18°C (64°F). The maximum temperature reaches 40°C (104°F), and the month is wetter, recording 53 mm (2.1 in) of rainfall over 8 days, while humidity remains similar at 78%. For more detailed information, check out Grahamstown weather in November.
In September, the weather is characterized by a wide temperature range, with minima dropping to 1°C (34°F) and highs reaching up to 39°C (102°F). The month sees an average temperature of 15°C (60°F) and experiences about 36 mm (1.4 in) of precipitation over 4 days, maintaining a humidity level of 79%. In contrast, December brings warmer conditions with a minimum temperature of 7°C (46°F) and an average of 20°C (68°F). The maximum temperature can reach 40°C (104°F), accompanied by increased rainfall of 64 mm (2.5 in) spread over 11 days, resulting in a slightly elevated humidity of 80%. This seasonal shift highlights the transition from the cooler early spring weather to the warmer summer atmosphere. For more details, visit Grahamstown weather in December.
As September arrives in Grahamstown, the weather begins to shift, marked by a delightful blend of warmth and coolness. This month showcases a significant range in temperatures, with occasional scorching days juxtaposed against those refreshing cool nights, a stark contrast to the more mild conditions of the preceding months. With an average humidity of 79% and some rainfall contributing to a verdant backdrop, September heralds the transition into spring, invigorating the landscape and inviting outdoor pursuits. For a deeper understanding of the full scope of Grahamstown's weather patterns throughout the year, explore our detailed page on Grahamstown Climate.