Last updated: August 21, 2025
In September, Bengaluru experiences a delightful blend of warmth and moisture, with a maximum temperature reaching up to 31°C (88°F) and an average temperature of a comfortable 24°C (75°F). As the transition into the autumnal season unfolds, residents should prepare for frequent rain, with 162 mm (6.4 in) of precipitation spread over 19 days, contributing to the city's lush greenery. With humidity levels soaring to 89%, the atmosphere is often heavy, making this month not only a time for heavy rains but also an invitation to enjoy the city's vibrant, post-monsoon charm.
In September, Bengaluru experiences a delightful transition, with temperatures comfortably settling around a minimum of 18°C (65°F) and peaking at 31°C (88°F). The average temperature of 24°C (75°F) reflects a pleasant climate, ideal for outdoor activities and exploring the city's vibrant culture. This month marks a slight dip in temperatures compared to the sweltering summer months of April and May, providing a refreshing respite. As the monsoon season begins to wane, the city enjoys a mix of warm sunshine and the lingering coolness from recent rains, making September one of the more enjoyable times to experience Bengaluru's diverse offerings.
September in Bengaluru typically marks the transition from the peak monsoon season, bringing 162 mm (6.4 in) of rainfall over 19 days—making it one of the wettest months of the year. This substantial precipitation comes on the heels of an already soaked August, which records 154 mm (6.1 in) across the same number of rainy days. As the city gears up for October, which averages a similar 165 mm (6.5 in) of rain, September acts as a crucial period for replenishing water bodies and enhancing the lush greenery that Bengaluru is renowned for. Overall, the trends indicate a firm grip of the monsoon, with September serving as a key month that sustains the vibrancy of the city before the rains gradually recede.
As summer transitions to monsoon, September in Bengaluru sees humidity levels peak at an impressive 89%, consistent with the high humidity trends established in the preceding months of July and August. This marks a significant increase from the more moderate levels of earlier months, like February and March, which recorded dips of 51% and 47%, respectively. The lingering monsoon rains contribute to this heightened moisture, creating a sultry atmosphere that characterizes the city's landscape. As the month progresses, humidity begins to taper off, setting the stage for a gradual decline leading into October. Overall, September's humidity is a testament to Bengaluru's climatic rhythm, where the heat of summer gives way to the rich, wet embrace of monsoon's end.
As the warm embrace of September settles over Bengaluru, the UV Index remains at a notably high level of 14, categorizing exposure as extreme and a burn time of merely 10 minutes. This trend of elevated UV readings, consistent throughout the peak months of the year, underscores a pressing need for sun protection. With the intensity of sunlight not letting up, staying vigilant against harmful UV rays is crucial. For an insightful overview of the UV Index throughout the year, check out Bengaluru UV Index.
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As September unfolds in Bengaluru, India, the city enjoys 288 hours of sunshine, marking a slight rejuvenation from the lower figures of the preceding months. After the monsoon-drenched August, which recorded only 260 hours, September's brighter days hint at the approaching end of the rainy season. This rebound complements the trend seen earlier in the year, where sunshine peaked in March with 347 hours before gradually tapering off during the monsoon months. With a steady increase leading up to October's 297 hours, September serves as a bridge, where residents can relish in the warmth of the sun while the vibrant greenery from the rains takes center stage. The city's meteorological rhythm creates a diverse tapestry of weather, making each month unique yet beautifully connected.
In Bengaluru, September marks a significant departure from the sunlit days of earlier months. With a mere 9% chance of sunny weather, it stands out as one of the driest periods of the year. This decline in sunshine follows the peak months of February through April, where the likelihood of clear skies soars to a hearty 73% to 79%. The monsoon reaches its zenith in the preceding months of June through August, resulting in a dramatic drop in sunlight. As October rolls in, the sun’s return is faint, with a slight uptick to 13%. Thus, if you're yearning for bright days in September, you may want to reconsider your plans for outdoor escapades, as the clouds are likely to dominate the skyline.
Throughout September, Bengaluru enjoys a delightful 12 hours of daylight, continuing a consistent streak that began in March. This month marks the transition into the yearly rhythm of the city, where daylight stabilizes at this length from March through September, providing ample time for outdoor activities and vibrant city life. Following September, daylight starts to wane, dipping to 11 hours in October and remaining so through December. This pattern reflects the city's climate variability, offering residents and visitors alike a rich tapestry of daylight experiences as the seasons change.
September in Bengaluru brings a gentle breeze with an average wind speed of 3.5 m/s (8 mph), matching the light winds experienced in August. This month marks a transition, as the city begins to feel the refreshing change from the monsoon's heavier breezes in June and July, which peak at 4.0 m/s and 4.4 m/s respectively. The winds start to calm down again as the temperatures begin to cool, a trend that continues into October, where speeds drop further to 2.0 m/s (5 mph). Overall, September's pleasant winds create a perfect backdrop for outdoor activities, consistently teasing the approach of autumn while echoing the lingering warmth of the monsoon season.
Weather in Bengaluru varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Bengaluru, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is noticeably warmer and more humid, with average temperatures around 24°C (75°F) and maximums reaching up to 31°C (88°F). The month sees significant rainfall, with about 162 mm (6.4 in) of precipitation spread over 19 days, resulting in a high humidity level of 89%. In contrast, January offers a cooler climate, with minimum temperatures dropping to 13°C (56°F) and averaging 22°C (72°F). Precipitation is minimal, with only 12 mm (0.5 in) recorded over just 2 days, and the humidity level is considerably lower at 62%. For more detailed insights on January weather, you can visit Bengaluru weather in January.
September and February present strikingly different weather conditions. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 31°C (88°F), with an average of 24°C (75°F). This month is characterized by significant rainfall, receiving 162 mm (6.4 in) over 19 days, combined with high humidity levels of 89%. In contrast, February experiences milder temperatures, with a minimum of 14°C (57°F) and a maximum of 34°C (93°F), averaging at 23°C (74°F). This month is notably dry, with only 9 mm (0.3 in) of precipitation falling over just 1 day and a much lower humidity of 51%. To learn more about February weather, visit Bengaluru weather in February.
In comparing the weather between September and March, there are notable differences in temperature and humidity. September typically features a warm average of 24°C (75°F), with maximum temperatures reaching up to 31°C (88°F). However, it is also characterized by high humidity at 89% and considerable rainfall, averaging 162 mm over 19 days. In contrast, March boasts a slightly higher average temperature of 26°C (80°F) and can reach maximums of 35°C (96°F). Importantly, March experiences significantly lower humidity at 47% and minimal precipitation, averaging just 16 mm over 2 days. For more details about the weather in March, you can check Bengaluru weather in March.
In comparing the weather of September and April, it’s clear that both months offer distinct climatic characteristics. September sees temperatures ranging from a minimum of 18°C (65°F) to a maximum of 31°C (88°F), with an average of 24°C (75°F). This month is also marked by significant rainfall, accumulating 162 mm (6.4 in) over 19 days, accompanied by high humidity levels of 89%.
In contrast, April typically boasts warmer conditions, with a minimum of 20°C (68°F) and a sweltering maximum of 36°C (96°F), resulting in an average temperature of 28°C (82°F). Precipitation is minimal in April, with only 37 mm (1.5 in) falling over just 6 days, leading to a more comfortable humidity level of 59%. For a more detailed look at the weather patterns in April, you can visit Bengaluru weather in April.
In comparing the weather of September and May, September features a cooler temperature range, with average highs reaching 31°C (88°F), while May sees more heat, peaking at 35°C (96°F). Although September has a slightly lower average minimum temperature of 18°C (65°F) compared to May's 19°C (67°F), the humidity in September is notably higher at 89%, making it feel more muggy. Additionally, September receives more precipitation, totaling 162 mm (6.4 in) over 19 rainy days, whereas May experiences 133 mm (5.2 in) over 16 days of rain. For more detailed information, check Bengaluru weather in May.
September and June both feature warm temperatures, but September generally experiences slightly cooler averages. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 31°C (88°F), with an average of 24°C (75°F). In contrast, June showcases a slightly higher range, with minimum temperatures at 20°C (69°F) and maximums reaching 33°C (91°F), averaging 25°C (77°F). While both months experience considerable rainfall, September has higher precipitation levels at 162 mm (6.4 in) over 19 days, compared to June's 121 mm (4.7 in) over 21 days. Additionally, September's humidity is slightly higher at 89%, while June maintains a humidity of 83%. For more details about June weather, visit Bengaluru weather in June.
In comparing the weather between September and July, we notice some similarities and differences. July experiences slightly warmer minimum temperatures, with a minimum of 20°C (68°F) compared to September's 18°C (65°F). Both months have an average temperature of around 24°C (75°F), but July's maximum temperature peaks slightly higher at 32°C (91°F) compared to September's 31°C (88°F). Precipitation levels are quite close, with July recording 164 mm (6.5 in) over 23 days, while September sees 162 mm (6.4 in) spread across 19 days. Interestingly, humidity remains nearly constant, with September reaching 89% and July at 88%. For detailed insights into July's weather, you can refer to Bengaluru weather in July.
September offers slightly cooler daytime temperatures compared to August, with a minimum of 18°C (65°F) versus August's 20°C (68°F). Both months have similar average temperatures, but September sees a slight uptick in maximum temperatures, reaching 31°C (88°F) compared to August's 30°C (87°F). Precipitation is higher in September, totaling 162 mm (6.4 inches) over 19 rainy days, compared to August's 154 mm (6.1 inches) over 23 days, indicating a wetter month overall. Despite these differences, humidity remains consistent at 89% for both months. For more details on August's weather, visit Bengaluru weather in August.
September and October exhibit quite similar weather patterns, with October slightly cooler and drier. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 31°C (88°F), along with high humidity levels of 89% and substantial rainfall of 162 mm (6.4 in) over 19 days. October, on the other hand, sees a minor drop in minimum temperature to 16°C (61°F), while the average remains steady at 24°C (75°F) and the maximum reaches 31°C (87°F). Rainfall increases slightly to 165 mm (6.5 in) over the same 19 days, and humidity decreases to 85%. To learn more about the specifics of October weather, check out Bengaluru weather in October.
In September, the weather tends to be warmer and more humid, with average temperatures around 24°C (75°F) and maximums reaching up to 31°C (88°F). However, it also experiences significant rainfall, totaling 162 mm (6.4 in) over 19 days, which contributes to a high humidity level of 89%. In contrast, November sees a slight drop in temperatures, with an average of 23°C (73°F) and maximums of 30°C (87°F). The precipitation decreases to 108 mm (4.2 in) across just 12 days, resulting in lower humidity at 82%. For a more detailed look at the climate specifics, you can check out Bengaluru weather in November.
In September, the weather is notably warmer and wetter compared to December. With minimum temperatures around 18°C (65°F) and average highs reaching 31°C (88°F), September experiences a significant amount of rainfall, totaling 162 mm (6.4 in) over 19 days, creating a humid atmosphere with humidity levels at 89%. In contrast, December brings cooler temperatures, with a minimum of 14°C (58°F) and an average of 22°C (71°F), while the maximums reach 30°C (86°F). The precipitation drastically decreases to just 29 mm (1.1 in) spread over only 5 days, contributing to a drier environment with humidity dropping to 77%. For more details, you can check Bengaluru weather in December.
September in Bengaluru ushers in a marked transition from the dry spell of summer, bringing with it a refreshing blend of tropical rains and cooler temperatures. As the city experiences heightened humidity levels, it embraces the vibrant monsoon atmosphere that sets it apart from the preceding months. The average temperatures begin to dip, offering a pleasant escape from the intense summer heat. This month is characterized by frequent showers, with nearly two-thirds of September days graced by rainfall, resulting in a lush, green landscape. For those interested in understanding more about how these climatic shifts impact life in Bengaluru throughout the year, visit Bengaluru Climate.