Last updated: August 21, 2025
In September, Bandung, Indonesia experiences a warm and humid climate, with maximum temperatures reaching 31°C (88°F) and an average of 25°C (77°F). The minimum temperatures drop to a mild 19°C (67°F), making for comfortable evenings. This month sees a notable precipitation amount of 59 mm (2.3 in) spread across approximately 17 days, contributing to the lush greenery that Bandung is known for. With humidity levels hovering around 77%, visitors can expect a tropical atmosphere, ideal for exploring the city’s vibrant culture amidst occasional rain showers.
In September, Bandung, Indonesia, experiences a mild transition towards the end of the dry season. The temperatures range from a minimum of 19°C (67°F) to a comfortable maximum of 31°C (88°F), with an average hovering around 25°C (77°F). This month marks a slight increase in warmth compared to August, as the city begins to shake off the cooler vibes of winter. The consistent climate throughout the year, characterized by modest temperature variations, creates an inviting atmosphere for both locals and tourists. September is an ideal time to explore Bandung's lush landscapes and vibrant culture, as the weather remains pleasantly temperate, perfect for outdoor adventures.
September in Bandung, Indonesia marks a transitional phase in the city's climatic rhythm. With a total precipitation of 59 mm (2.3 in) over 17 days, the month experiences a modest uptick in rainfall compared to the drier months of July and August, which saw notably lower totals of 36 mm (1.4 in) and 45 mm (1.8 in), respectively. This slight increase signals the approaching rainy season, setting the stage for significantly wetter months ahead, such as November, which typically records a striking 363 mm (14.3 in). As September progresses, residents can expect a refreshing reprieve from the prolonged dry spells, heralding the lush greenery that the region is known for during the peak of its rainy season.
In September, the humidity in Bandung, Indonesia dips slightly to 77%, aligning with the cooler months of early fall. This marks a continuation of the trend observed since July and August, when humidity levels were also relatively low at 79%. The decline from the peak humidity levels earlier in the year—hovering around 81-85% from January to May—suggests a gradual transition to the drier months ahead. As the year progresses into October, the humidity stabilizes, maintaining that 77% mark, indicating a consistent pattern that invites a more comfortable ambiance in the lush landscapes of Bandung.
In September, Bandung, Indonesia, experiences a notably high UV Index of 15, categorized as extreme, which means that prolonged exposure can lead to sunburn in just 10 minutes. This trend is consistent with the previous months from January to August, where the UV Index has predominantly remained in the extreme category, peaking at 15 in several months. As the year advances into October and November, this extreme level continues, underscoring the importance of sun safety measures throughout much of the year. The data clearly highlights that if you're in Bandung during these months, protective measures like sunscreen and clothing are vital to safeguard against harmful UV radiation. For more details, visit Bandung UV Index.
UV Risk Categories
September in Bandung, Indonesia, shines with 305 hours of sunshine, continuing the trend of abundant daylight seen during the peak months of July and August, each boasting 314 hours. As the year progresses, the city enjoys a gradual increase in sunshine hours, peaking in the mid-year before slightly tapering off in November and December. This consistent brightness in September reflects the vibrant atmosphere typical of Bandung during the dry season, inviting both residents and visitors to revel in the outdoor beauty and lively culture of this enchanting city. With the sun casting its warm glow, September is an ideal month to explore Bandung’s stunning landscapes and delightful attractions before the shorter days of the rainy season set in.
September in Bandung, Indonesia, offers a 23% chance of sunny weather, making it a relatively pleasant month compared to the wetter winter months that follow. This figure captures a notable decline in sunshine from the peak in July, which boasts a 39% chance of clear skies. As the transition from the dry season to the more humid months begins, September provides a sweet spot for those eager to enjoy the outdoors without the intensity of the earlier peak. While sunshine is less likely than in recent months, it's still significantly better than the dreary prospects of October and November. So, if you’re considering a visit, September might just present you with a delightful balance of warmth and occasional sunshine.
September in Bandung, Indonesia, marks a delightful shift in daylight duration, as the city enjoys 12 hours of sunlight—a return to the consistent brightness typical of the early months of the year. Transitioning through the year, daylight hours dipped to 11 hours from April to August, as the city cruised through its drier season. However, September rejuvenates the landscape with longer days, paving the way into the vibrant months ahead. This rhythmic pattern of daylight not only highlights the region’s equatorial charm but also sets a scenic backdrop for outdoor adventures and cultural exploration as day and night find their balance once more.
September in Bandung, Indonesia, brings a refreshing breeze with an average wind speed of 3.3 m/s (7 mph), making it one of the year's more invigorating months. This slight dip from the peak of 3.5 m/s (8 mph) recorded in August signals a transition as the dry season begins to wane. Interestingly, after a gradual increase in wind speed from May through August, September represents a subtle shift, indicating a gentle cooling that hints at the upcoming rainy season. As the days grow shorter and the atmosphere changes, the winds of September offer a delightful prelude to the lush greenery that will soon emerge.
Weather in Bandung varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Bandung, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather in Bandung features a comfortable temperature range, with minimums around 19°C (67°F) and averages of 25°C (77°F), peaking at 31°C (88°F). This month experiences moderate rainfall, totaling 59 mm (2.3 in) over about 17 days, and maintains a humidity level of 77%.
In contrast, January brings warmer temperatures, with minimums of 23°C (73°F) and averages around 27°C (80°F), but can reach highs of 33°C (92°F). It is also significantly wetter, with 287 mm (11.3 in) of precipitation spread across 24 days, contributing to a slightly higher humidity level of 81%.
For a detailed look at January's weather patterns, check out Bandung weather in January.
In September, the weather is generally warm with temperatures ranging from a minimum of 19°C (67°F) to a maximum of 31°C (88°F), averaging around 25°C (77°F). Precipitation is relatively moderate, with 59 mm (2.3 in) of rain falling over 17 days, and humidity levels at 77%.
In contrast, February is hotter and wetter, with temperatures ranging from a minimum of 23°C (73°F) to a high of 34°C (93°F), averaging 27°C (80°F). The month experiences significantly higher rainfall, totaling 297 mm (11.7 in) over 27 days, accompanied by increased humidity of 85%. For a more detailed look at the conditions you can expect, check out Bandung weather in February.
In comparing the weather of September and March, we see significant differences in temperature and precipitation. September experiences a milder climate with average temperatures ranging from a minimum of 19°C (67°F) to a maximum of 31°C (88°F), while March is warmer, with temperatures ranging from 23°C (74°F) to 33°C (91°F). However, March tends to be much wetter, receiving an average of 289 mm (11.4 in) of precipitation over 30 days, compared to September's 59 mm (2.3 in) over just 17 days. This results in a higher humidity level in March, averaging 83% compared to September's 77%. For more detailed insights, you can visit Bandung weather in March.
In September, the weather tends to be warm with average temperatures ranging from a low of 19°C (67°F) to a high of 31°C (88°F). The month sees around 59 mm (2.3 in) of precipitation over 17 days, resulting in a humidity level of 77%. Conversely, April experiences slightly higher temperatures with minimums of 23°C (73°F) and maximums reaching 33°C (92°F). This month is notably wetter, boasting 180 mm (7.1 in) of rainfall over 27 days, contributing to a humidity of 80%. As such, while both months are warm, April is characterized by higher temperatures and increased rainfall. For more details, check out Bandung weather in April.
In comparing the weather in September and May, September tends to be slightly cooler with an average temperature of 25°C (77°F), while May sees warmer averages of 27°C (80°F). The maximum temperatures also differ, reaching 31°C (88°F) in September and soaring to 33°C (92°F) in May. Additionally, May experiences more precipitation, with 89 mm (3.5 in) over 16 days compared to September's 59 mm (2.3 in) spread over 17 days. Humidity levels are relatively high in both months, but May has a marginally higher average at 82% compared to September's 77%. For more details, you can check Bandung weather in May.
In comparing the weather of September and June, both months offer warm temperatures, though June tends to be slightly warmer overall. In June, the minimum temperature is 20°C (67°F) with an average of 26°C (78°F) and a maximum of 32°C (90°F), while September has a minimum of 19°C (67°F) and an average of 25°C (77°F), peaking at 31°C (88°F). Rainfall is more prevalent in June, with 84 mm (3.3 in) spread over 16 days, compared to September's 59 mm (2.3 in) over 17 days. Humidity levels are also slightly higher in June at 81%, versus 77% in September. For more detailed information, you can check out Bandung weather in June.
In comparing the weather between September and July, we see notable differences in temperature and precipitation. September tends to have a slightly higher average temperature of 25°C (77°F) compared to July’s 24°C (76°F). However, July experiences a marginally warmer maximum temperature of 32°C (90°F) versus September's peak of 31°C (88°F). Precipitation levels are also higher in September, with 59 mm (2.3 in) recorded over 17 days, while July only sees 36 mm (1.4 in) over 13 days. Humidity remains quite similar, with September at 77% and July slightly higher at 79%. For those interested, more detailed insights into July's climate can be found here: Bandung weather in July.
In comparing the weather between September and August, September tends to be slightly warmer, with an average temperature of 25°C (77°F) compared to August's 24°C (76°F). Both months have a similar minimum temperature of 19°C (67°F), but September reaches a higher maximum of 31°C (88°F), slightly edging out August’s 30°C (87°F). Interestingly, September experiences more rainfall, with 59 mm (2.3 in) over 17 days, compared to August's 45 mm (1.8 in) over 14 days. Humidity levels are similar, with September at 77% and August at 79%. For a more detailed look at August's climate, you can check Bandung weather in August.
In September, the weather features a comfortable average temperature of 25°C (77°F), with daily highs reaching up to 31°C (88°F) and lows around 19°C (67°F). However, the month sees significant precipitation, totaling 59 mm (2.3 in) over 17 days, while humidity remains steady at 77%.
In contrast, October experiences slightly warmer conditions, with an average temperature of 26°C (78°F) and maximum temperatures peaking at 33°C (91°F). Rainfall increases notably to 123 mm (4.8 in) over 22 days, maintaining the same humidity level of 77%. These changes indicate a transition into wetter and warmer conditions. For more detailed insights on weather patterns, check Bandung weather in October.
September and November present distinct weather patterns. In September, temperatures range from a minimum of 19°C (67°F) to a maximum of 31°C (88°F), with an average of 25°C (77°F). The precipitation level is relatively moderate at 59 mm (2.3 in), occurring on 17 days, and the humidity hovers around 77%. In contrast, November brings warmer temperatures, with a minimum of 21°C (71°F) and a maximum reaching 33°C (91°F), averaging 26°C (80°F). However, it also sees significantly higher precipitation at 363 mm (14.3 in), over 27 days, while humidity remains slightly elevated at 78%. For more details on November weather, visit Bandung weather in November.
In comparing the weather between September and December, it's clear that December is significantly warmer and wetter. September features a minimum temperature of 19°C (67°F) and an average of 25°C (77°F), while December boasts higher temperatures with a minimum of 23°C (74°F) and an average of 27°C (80°F). Additionally, December experiences much more precipitation, with 317 mm (12.5 in) over 29 days, in contrast to September's 59 mm (2.3 in) over 17 days. Both months have similar humidity levels at 77%. For a more detailed look at the December weather, you can visit Bandung weather in December.
As September unfolds in Bandung, the weather showcases a delightful blend of warmth and occasional showers, setting it apart from other months. With temperatures peaking around 31°C (88°F) and averaging a comfortable 25°C (77°F), the city enjoys an inviting climate that balances summer's heat with cool, refreshing breezes. However, this month also brings a taste of the rainy season, with 59 mm (2.3 in) of precipitation spread across 17 days, contributing to the city’s lush greenery. The 77% humidity adds a tropical touch, creating a unique atmosphere that is both vibrant and slightly damp. For more insights on what to expect throughout the year, check out Bandung Climate.