Last updated: August 31, 2025
September in Mossel Bay, South Africa brings a delightful transition into spring, characterized by a maximum temperature reaching a warm 31°C (88°F). The average temperature hovers around a comfortable 16°C (60°F), while the nights cool to a crisp 10°C (51°F). This month witnesses moderate rainfall, accumulating 49 mm (1.9 in) over approximately 7 days, making it a refreshing time for the lush landscapes. With humidity levels around 77%, expect a pleasantly mild atmosphere, perfect for outdoor explorations and enjoying the scenic coastal beauty.
In September, Mossel Bay begins to shake off the winter chill, with temperatures marking a significant shift towards warmer days. The minimum temperature hovers around 10°C (51°F), while the average climbs to a pleasant 16°C (60°F), setting the stage for the upcoming spring season. Notably, the maximum temperature can soar to 31°C (88°F), offering a taste of summer's heat. This month heralds a transition, as the daytime warmth contrasts delightfully with the cooler nights, inviting both locals and visitors to enjoy outdoor activities against the stunning coastal backdrop. As the days grow longer and milder, September is a vibrant prelude to the captivating beauty of Mossel Bay.
In September, Mossel Bay experiences a notable shift in precipitation, with 49 mm (1.9 in) of rainfall over approximately 7 days. This marks a slight decrease from August's heavier showers, which delivered 51 mm (2.0 in) across 9 days. As winter gives way to spring, the weather begins to dry, yet September still maintains a robust level of moisture. This period serves as a transition, bridging the wetter months of winter with the drier seasons ahead, while providing a lush backdrop for the stunning landscapes of this coastal region. As the days grow longer and warmer, the balance of rain nurtures the vibrant flora, setting the stage for a colorful spring ahead.
In September, Mossel Bay experiences a humidity level of 77%, marking a slight dip compared to the peak months of early autumn. From January to April, humidity consistently hovers above 80%, peaking at 83% in March. As winter approaches, the humidity gradually decreases, reaching its lowest point in August at 76%. September signals a subtle rebound, as the humidity begins to rise again ahead of the warmer months, though it remains comfortably below the summer highs. This steady fluctuation reflects Mossel Bay's coastal climate, where humidity plays a significant role in shaping the region's inviting atmosphere.
As September rolls into Mossel Bay, South Africa, residents and visitors alike should be mindful of the very high UV Index reaching 9, which suggests a burn time of just 15 minutes for unprotected skin. This marks a noticeable uptick from the milder months of winter, where UV exposure remained moderate. The trend indicates a gradual increase in UV intensity as spring approaches, highlighting the importance of sun protection. With the UV Index poised to climb further in the subsequent months, staying informed is crucial for skin health and safety. For more detailed insights, check out the Mossel Bay UV Index.
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As September rolls into Mossel Bay, South Africa, it brings a gentle embrace of sunshine, contributing 323 hours of radiant daylight—just shy of the vibrant summer months ahead. This marks a slight increase from the previous months, hinting at the transition from winter's cooler spells to spring's warmth. In contrast to June’s more subdued 275 hours, September’s brightness signals the gradual resurgence of outdoor life, as daylight begins to extend, paving the way for the sunniest months of the year. October promises even more with 367 hours, putting September in a picturesque position as the days grow longer and the allure of Mossel Bay’s natural beauty beckons. Each hour of sunshine not only illuminates the stunning landscapes but also ignites the spirit of adventure, inviting both locals and visitors to bask in the delightful springtime glow.
When considering the likelihood of sunny weather in September in Mossel Bay, this coastal town sees a modest 46% chance of sunshine, positioning it as one of the less sunny months of the year. Following the high summer months of January and February, which boast a remarkable 62% and 66% chance respectively, there is a noticeable decline in sunny days as autumn approaches. The subsequent months, particularly June and July, offer higher probabilities of sunshine at 69%, but they fall sharply again as summer fades back in, with both September and November reflecting a more overcast 46%. Thus, September serves as a transitional period, hinting at the approaching change in seasons, where the golden sun might be somewhat elusive.
In Mossel Bay, September marks a gentle transition as daylight reaches 11 hours, setting the stage for the upcoming spring months. Following the peak of 14 hours in January, daylight gradually wanes until it dips to a low of 9 hours in June. However, as winter closes, September witnesses a subtle increase, rekindling the promise of longer days ahead. This trend of gradually increasing daylight continues into October, where it climbs back to 12 hours. The rhythm of daylight here not only reflects the seasons but also offers a glimpse of the vibrant life that flourishes in this coastal haven as it prepares for the warmer months.
As September graces Mossel Bay, the winds begin to pick up slightly, averaging 4.7 m/s (11 mph), a gentle reminder of the coastal breezes that define this stunning locale. Following the calmer months of winter, where average speeds dipped to a cozy 3.7 m/s (8 mph) in April, this transition sets the stage for a lively spring. The wind's resurgence in September hints at the approaching summer, as it climbs to a more invigorating 5.3 m/s (12 mph) by October. This gradual increase in wind speed not only enhances the exhilarating atmosphere for outdoor enthusiasts but also signifies a seasonal shift that locals and visitors alike eagerly anticipate. The steady wind patterns reflect a rhythm of nature, making Mossel Bay a delightful destination for those seeking adventure and connection with the coastal environment.
Weather in Mossel Bay varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Mossel Bay, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of September and January, we see notable differences in temperature and conditions. September typically starts with cooler temperatures, ranging from a minimum of 10°C (51°F) to a maximum of 31°C (88°F), while January is milder, with temperatures generally between 17°C (63°F) and 26°C (80°F). Precipitation levels are relatively close, with September receiving 49 mm (1.9 in) over about 7 days, compared to January's 46 mm (1.8 in) over 8 days. Both months have high humidity, with September at 77% and January slightly higher at 79%. For more detailed information, you can check Mossel Bay weather in January.
September and February present contrasting yet pleasant weather conditions. In September, temperatures range from a minimum of 10°C (51°F) to a maximum of 31°C (88°F), with an average of 16°C (60°F). The month sees about 49 mm (1.9 in) of precipitation over approximately seven days, and humidity levels hover around 77%. Conversely, February offers a warmer climate with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 29°C (84°F), averaging 21°C (70°F). It experiences less rainfall, totaling 30 mm (1.2 in) across eight days, and the humidity is slightly higher at 82%. For more detailed information, you can check Mossel Bay weather in February.
In comparing the weather between September and March, there are notable differences in temperature and humidity. September experiences a wider range of temperatures, with a minimum of 10°C (51°F) and a maximum of 31°C (88°F), while March has a milder temperature spectrum, ranging from 16°C (61°F) to 27°C (80°F). The average temperature in March is also higher at 20°C (68°F) compared to September's 16°C (60°F). Additionally, September tends to be less humid at 77% compared to March's 83%, although both months see similar precipitation levels, with September receiving 49 mm (1.9 in) over 7 days and March a bit less at 44 mm (1.7 in) over 8 days. For more detailed insights on March weather, you can check Mossel Bay weather in March.
When comparing the weather in September and April, September tends to have a wider temperature range, with minimums dipping to 10°C (51°F) and maximums reaching up to 31°C (88°F). In contrast, April's temperatures, while slightly higher on average, range from a minimum of 13°C (56°F) to a maximum of 28°C (83°F). Additionally, September experiences more precipitation, with 49 mm (1.9 in) over about seven days, compared to April's drier conditions with just 22 mm (0.8 in) across six days. Humidity levels are relatively high in both months, with September at 77% and April slightly higher at 82%. For a closer look at detailed April weather, check out Mossel Bay weather in April.
When comparing the weather in September to that of May, it's clear that both months have mild temperatures, but September tends to offer a larger range. September sees minimum temperatures around 10°C (51°F) and maximums of 31°C (88°F), with an average of 16°C (60°F). In contrast, May has slightly warmer minimums at 11°C (52°F) and a cooler maximum at 27°C (80°F), with an average of 17°C (63°F). Precipitation is somewhat similar between the two months, with September receiving 49 mm (1.9 in) over about 7 days, while May has slightly less precipitation at 43 mm (1.7 in) spread across 5 days. Both months maintain a high humidity level, with September at 77% and May slightly higher at 78%. For more details, you can check Mossel Bay weather in May.
In comparing the weather of September and June, we see notable differences despite similar average temperatures. September offers a broader temperature range with highs reaching up to 31°C (88°F), while June's maximum temperature is significantly cooler at 25°C (77°F). Precipitation levels are higher in September, averaging 49 mm (1.9 in) over 7 days compared to June's 24 mm (1.0 in) over 6 days. Interestingly, both months share the same minimum temperature of 10°C (51°F) and maintain a consistent humidity level of 77%. For a closer look at June weather specifics, you can visit Mossel Bay weather in June.
September experiences a wider temperature range compared to July, with minimums reaching 10°C (51°F) and maximums soaring up to 31°C (88°F), while July has more moderate temperatures, peaking at 25°C (77°F). Despite having a slightly higher average temperature of 16°C (60°F) in September, both months share a similar average temperature. Precipitation is also higher in September, totaling 49 mm (1.9 in) over 7 days, compared to July's 33 mm (1.3 in) over 6 days. Humidity levels are consistent between the two months, with September at 77% and July just slightly higher at 78%. For more detailed insights on July's weather, visit Mossel Bay weather in July.
September's weather shows a noticeable warming trend compared to August, with minimum temperatures rising from 9°C (48°F) to 10°C (51°F) and average temperatures increasing from 15°C (59°F) to 16°C (60°F). The maximum temperature jumps significantly from 25°C (78°F) in August to 31°C (88°F) in September, indicating more summer-like conditions. While both months experience similar levels of precipitation—49 mm (1.9 in) in September and 51 mm (2.0 in) in August—September has slightly fewer rainy days (7 compared to August's 9), along with a touch higher humidity at 77%. For a closer look at August's weather specifics, check out Mossel Bay weather in August.
September and October exhibit relatively similar weather patterns, but with some notable differences. In September, the minimum temperature hovers around 10°C (51°F), while the average reaches 16°C (60°F), and the maximum can hit 31°C (88°F). The month sees a total precipitation of 49 mm (1.9 in) over about 7 days, coupled with a humidity level of 77%. In contrast, October brings slightly warmer temperatures, with a minimum of 12°C (53°F) and an average of 17°C (62°F), while the maximum remains comparable at 30°C (86°F). The total precipitation decreases slightly to 47 mm (1.9 in) spread over 8 days, with humidity rising to 79%. For more details about October weather patterns, you can refer to Mossel Bay weather in October.
In September, the weather features a temperature range from a minimum of 10°C (51°F) to a maximum of 31°C (88°F), with an average of 16°C (60°F). The month experiences about 49 mm (1.9 in) of precipitation over 7 days, and humidity levels are relatively high at 77%. In contrast, November sees slightly warmer temperatures, with a minimum of 12°C (55°F), an average of 18°C (64°F), and a maximum of 26°C (80°F). The rainfall increases marginally to 51 mm (2.0 in) over 8 days, while humidity remains consistent at 77%. Overall, November presents a more temperate climate compared to the warmer and more variable conditions of September. For more detailed insights, check Mossel Bay weather in November.
In September, the weather features a wider temperature range with minimums reaching 10°C (51°F) and maximums soaring up to 31°C (88°F), resulting in an average of 16°C (60°F). This month also experiences relatively higher precipitation at 49 mm (1.9 in) over about 7 days, with humidity levels around 77%. In contrast, December brings milder temperatures with minimums of 15°C (59°F) and maximums of 25°C (77°F), leading to a more comfortable average of 19°C (67°F). While precipitation decreases to 33 mm (1.3 in) over the same number of days, humidity slightly increases to 79%, creating a humid yet pleasant atmosphere. For more detailed information, you can check Mossel Bay weather in December.
As September unfolds in Mossel Bay, the weather showcases a delightful transition into spring. With temperatures rising to a comfortable average of 16°C, the crispness of winter begins to fade, making way for a warmer atmosphere. While the humidity hovers around 77%, it adds a refreshing feel, complemented by occasional rainfall over about seven days throughout the month. The increase in temperatures, paired with the mild precipitations, sets September apart from the cooler and drier winter months, inviting visitors to experience the beauty of the region as it blossoms into vibrancy. For a deeper insight into what to expect, explore our detailed guide on the Mossel Bay Climate.