Last updated: August 21, 2025
In Kiambu, Kenya, September brings a refreshing mix of weather patterns, making it an intriguing month for both locals and visitors. With a maximum temperature reaching 28°C (82°F) and an average of 19°C (66°F), the days are pleasantly warm, while nights can cool down to a minimum of 10°C (50°F). The region experiences a total precipitation of 36 mm (1.4 in) over approximately 7 days, adding a layer of lushness to the landscape. This month also boasts a comfortable humidity level of 63%, striking a balance that enhances the overall outdoor experience. Whether you're exploring the vibrant culture or the stunning natural beauty, September in Kiambu offers a delightful climate to enjoy.
In September, Kiambu, Kenya, experiences a gentle transition from the cooler months of winter to the warmer spring period. Temperatures typically range from a minimum of 10°C (50°F) to a maximum of 28°C (82°F), with an average of 19°C (66°F). This slight uptick in warmth aligns with the overall trend of increasing temperatures as the year progresses, particularly from the chillier August nights. As the days grow longer and milder, September offers a comfortable climate that is ideal for outdoor activities and enjoying Kenya's stunning landscapes. The consistent average temperature reflects Kiambu's temperate climate, providing a pleasant reprieve from the extremes of both heat and cold.
In September, Kiambu experiences a return to milder precipitation levels, with an average of 36 mm (1.4 in) of rainfall over about 7 days. This trend reflects a slight increase compared to the drier months of July and August, where only 21 mm and 26 mm fell, respectively. As the region transitions towards the end of the dry season, the gentle rains provide a welcome respite and prepare the ground for the heavier downpours that typically follow in October and November. This gradual shift hints at the cyclical nature of Kiambu's rainfall, signaling the impending arrival of the more robust long rains that are vital for agriculture and water supply.
In September, Kiambu experiences a humidity level of 63%, reflecting a slight increase from the drier months of March and April, which see lows of 49% and 54% respectively. This uptick is part of a broader trend as the region transitions towards the wetter months ahead, characterized by a notable jump in humidity during October at 76% and reaching a peak in November at a humid 89%. The overall pattern illustrates a steady rise in humidity from the dry season in early months, culminating in the climax of wet conditions experienced towards the end of the year. As the year progresses, residents can anticipate increasingly moist air, setting the stage for the lush landscapes that define Kiambu.
In September, Kiambu, Kenya, experiences a UV Index of 14, categorizing the exposure as extreme and maintaining a burn time of just 10 minutes. This marks a slight decrease from the previous months, yet it continues the trend of high UV radiation that the region has seen throughout the year. From January through April, the Index peaked at 16, showing only minor fluctuations as the months progressed. Even in the cooler months of June and July, the Index remained persistently high, underscoring the need for sun protection year-round. As we approach the tail end of the year, it’s essential to stay vigilant against UV exposure. For more detailed insights, visit Kiambu UV Index.
UV Risk Categories
September in Kiambu, Kenya, offers a delightful blend of warmth and vibrant sunshine, showcasing 330 hours of sunshine. The month mirrors the previous August, maintaining a consistent brightness as the region transitions further into the dry season. This steady pattern emerges from a remarkable trend, where sunshine hours peak significantly from March's 340 hours to an impressive 344 hours in December. As September unfolds, it becomes evident that Kiambu basks in a climate that not only supports outdoor activities but also enhances the local agricultural landscape, perfectly complementing the region's rich natural beauty.
In Kiambu, Kenya, the likelihood of sun in September stands at 25%, placing it just below the month of April, which has the lowest chance of sunny weather at 26%. The pattern of sunshine throughout the year reveals a significant decline in sunny days from mid-year, particularly in July with a mere 10%, and a gradual rebound as the year progresses towards the end. Notably, early months like January and March experience significantly higher probabilities of sunny weather, reaching 46% and 43% respectively. As we transition into the latter part of the year, October offers a slight improvement at 34%, hinting at a possible trend of increasing sunshine as the landscape approaches the more favorable dry season. Overall, while September may not be the sunniest month, it serves as a bridge towards the more favorable weather conditions ahead.
In Kiambu, Kenya, the rhythm of daylight remains beautifully constant throughout the year, including the month of September, which offers a balanced 12 hours of daylight. This remarkable consistency reflects the region's equatorial positioning, where day and night experiences remain almost uniform. Despite the various seasons, residents can rely on this steady duration of daylight to guide their daily activities and agriculture, fostering a sense of reliability in both lifestyle and routine. As September unfolds, the unchanging hours of daylight contribute to the region's vibrant and active atmosphere, allowing for a harmonious blend of work and leisure amidst the tranquil scenery.
As September rolls into Kiambu, Kenya, the winds begin to shift, maintaining an average speed of 2.4 m/s (5 mph). This month marks a slight uptick from the calmer breezes of August, which hovered around 2.1 m/s (5 mph). The trend indicates a gradual increase in wind speed as the year progresses, peaking in the following months with October and November showcasing faster winds at 2.9 m/s (6 mph) and 3.0 m/s (7 mph) respectively. September seems to serve as a gentle transition into the blustery heights of late spring, whispering promises of change and invigorating the landscapes of Kiambu in preparation for the more dynamic weather ahead.
Weather in Kiambu varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kiambu, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January share similar precipitation levels, with both months receiving around 36 mm of rainfall and experiencing wet days—seven in September and six in January. Temperature-wise, September has slightly cooler conditions, with an average of 19°C (66°F), while January sees a marginal increase to an average of 20°C (68°F). Both months experience comfortable daytime highs, peaking at 28°C (82°F) in September and 30°C (86°F) in January. Additionally, humidity levels remain close, with September at 63% and January slightly higher at 64%. For a detailed look at the January weather, visit Kiambu weather in January.
September and February both offer mild and pleasant weather, but they exhibit some distinct characteristics. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 28°C (82°F), with an average of 19°C (66°F). The month sees about 36 mm (1.4 in) of precipitation spread over seven days, accompanied by a humidity level of 63%. In contrast, February boasts slightly warmer conditions with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 31°C (88°F) and an average of 21°C (70°F). Precipitation during this month is a bit less, totaling 33 mm (1.3 in) over the same seven days, but the humidity drops to 53%. For more insights, you can check out Kiambu weather in February.
In comparing the weather between September and March, we can see some distinct differences. September typically has a cooler temperature range, with a minimum of 10°C (50°F) and an average of 19°C (66°F), while March exhibits warmer conditions, starting at a minimum of 13°C (55°F) and averaging around 21°C (70°F). The maximum temperatures in March also reach up to 32°C (90°F), significantly higher than September's maximum of 28°C (82°F). Additionally, March experiences more precipitation, totaling 80 mm (3.1 in) over about 12 days, compared to September's 36 mm (1.4 in) over just 7 days, indicating a wetter month. The humidity is also lower in March at 49%, in contrast to the 63% observed in September. For a more detailed look at the weather in March, you can check Kiambu weather in March.
When comparing the weather in September and April, several notable differences emerge. September experiences milder temperatures with a minimum of 10°C (50°F), averaging 19°C (66°F), and reaching a maximum of 28°C (82°F). In contrast, April is generally warmer, with a minimum of 14°C (58°F), an average of 20°C (69°F), and a high of 31°C (87°F). Additionally, April sees significantly more precipitation, totaling 146 mm (5.7 in) over 23 days, compared to September's 36 mm (1.4 in) over just 7 days. Interestingly, while September has a higher humidity level of 63%, April's humidity is comparatively lower at 54%. For more details, you can visit Kiambu weather in April.
When comparing the weather in September and May, both months experience similar average temperatures, hovering around 19°C (66°F). However, September tends to be drier, with only 36 mm of precipitation over about 7 days, while May is significantly wetter, receiving 133 mm of rain across 19 days. Additionally, humidity levels are slightly higher in May at 71%, compared to September’s 63%. These differences make September a relatively more pleasant time for outdoor activities, whereas May’s wetter and more humid conditions may keep people indoors. For detailed insights, you can check Kiambu weather in May.
September and June both present mild temperatures, but September typically enjoys slightly warmer conditions, with average highs reaching 28°C (82°F) compared to June's 26°C (80°F). While the minimum temperatures remain quite similar, June experiences a touch more precipitation, averaging 55 mm (2.2 in) over about 10 days, versus September's 36 mm (1.4 in) spread over 7 days. Humidity levels are also higher in June, resting at 70% versus 63% in September. For those interested in a detailed overview, you can check Kiambu weather in June.
When comparing the weather in September and July, both months exhibit similar temperature ranges and humidity levels; however, September tends to be slightly warmer. In September, the minimum temperature hovers around 10°C (50°F) with an average of 19°C (66°F) and a maximum of 28°C (82°F), while July has a minimum of 9°C (48°F) and reaches an average of 18°C (64°F) and a maximum of 27°C (81°F). Additionally, September experiences more precipitation, with 36 mm (1.4 in) occurring over 7 days compared to July's 21 mm (0.8 in) across just 5 days. Both months maintain a consistent humidity level of 63%. For more information, you can visit Kiambu weather in July.
In comparing the weather of September and August, we see a slight increase in temperatures as September has a minimum of 10°C (50°F) and an average of 19°C (66°F), while August features a minimum of 8°C (47°F) and an average of 18°C (65°F). The maximum temperature in September peaks at 28°C (82°F), which is just one degree lower than August's maximum of 29°C (85°F). Precipitation levels are also higher in September, with 36 mm (1.4 in) recorded over 7 days, compared to August’s 26 mm (1.0 in) over 6 days. Humidity is slightly higher in September at 63%, compared to 60% in August. For a more detailed look at August's weather, you can visit Kiambu weather in August.
September and October exhibit noticeable shifts in weather patterns. September showcases a mild temperature range with a minimum of 10°C, an average of 19°C, and a maximum of 28°C. The month receives a moderate amount of precipitation at 36 mm over about 7 days, accompanied by a humidity level of 63%. In contrast, October brings slightly warmer temperatures, with a minimum of 12°C, an average of 20°C, and a peak of 29°C. However, it also experiences increased rainfall, totaling 69 mm over 13 days, and a rise in humidity to 76%. This transition from September to October indicates a more humid and wetter climate, making the month relatively cooler yet more saturated. For detailed insights, visit Kiambu weather in October.
In September, the weather typically features a mild temperature range, with a minimum of 10°C (50°F), an average of 19°C (66°F), and a maximum of 28°C (82°F). This month experiences relatively low precipitation, totaling 36 mm (1.4 in) over about 7 days, with humidity around 63%. In contrast, November sees slightly higher temperatures, with a minimum of 10°C (51°F), an average of 20°C (68°F), and a peak of 29°C (84°F). However, November is significantly wetter, receiving 92 mm (3.6 in) of rain over 16 days and higher humidity levels of 89%. For more detailed information, you can visit Kiambu weather in November.
September and December share similar average temperatures, both hovering around 19°C (66°F), with daily highs reaching 28°C (82°F). However, December experiences slightly higher minimum temperatures, averaging 11°C (52°F) compared to September's 10°C (50°F). The precipitation levels in December are notably greater, with 76 mm (3.0 in) falling over 11 days, while September sees just 36 mm (1.4 in) over 7 days. Additionally, December's humidity rises to 84%, compared to September's 63%, contributing to a more humid atmosphere. For more detailed information, you can refer to Kiambu weather in December.
As September unfolds in Kiambu, the weather presents a delightful transition marked by gentle warmth and refreshing rainfall. With average temperatures hovering around a pleasant 19°C, the mild climate provides a stark contrast to the cooler, more humid months preceding it. This month also sees a notable increase in precipitation, totaling 36 mm over seven days, offering vital moisture that invigorates the landscape. The humidity settles at a comfortable 63%, making it an ideal time for outdoor activities and exploration. For those interested in a deeper dive into Kiambu's weather patterns, detailed insights can be found at Kiambu Climate.