Last updated: August 21, 2025
Bandung, Indonesia, in September experiences a delightful blend of warmth and moisture, with average temperatures hovering around 22°C (72°F). Daytime highs can reach a comfortable 29°C (84°F), while nights cool down to a refreshing 15°C (58°F). This month is characterized by substantial rainfall, totaling 141 mm (5.6 in) over approximately 17 days, contributing to an elevated humidity level of 77%. The combination of mild temperatures and frequent rain creates a lush, vibrant landscape, making September a unique time to experience Bandung's natural beauty and cultural richness.
In September, Bandung, Indonesia, experiences comfortable temperatures that mark a transition towards a warmer climate. With minimums hovering around 15°C (58°F) and maximums reaching up to 29°C (84°F), the city maintains a pleasant average of 22°C (72°F). This pattern reflects a slight increase from the cooler months of July and August, where temperatures dipped to 14°C (57°F). The consistency in temperature throughout the year, with averages comfortably between 21°C (71°F) and 23°C (73°F), highlights Bandung's mild climate and makes September a favorable time for exploring the city's lush landscapes and vibrant culture. As the dry season begins to fade, the warmth of September encourages both locals and visitors to enjoy the outdoor adventures that await.
September marks a transition in Bandung's weather, with precipitation levels increasing to 141 mm (5.6 in) over 17 days of rainfall. While this amount is significantly lower than the peak months of November and December, it represents a notable uptick from the drier spell experienced in the previous months of July and August, which saw only 77 mm (3.0 in) and 74 mm (2.9 in) respectively. As the city heads towards the wet season, this gradual rise in precipitation hints at the looming intensity of the tropical rains, suggesting that visitors and residents alike should prepare for a mix of sunshine and showers in the coming weeks.
In September, Bandung, Indonesia experiences a modest humidity level of 77%, continuing a trend of gradual decline from the peak humidity seen at the beginning of the year. Following the high humidity months of January and February, which hover around 84-86%, the city witnesses a decrease in moisture levels as it transitions from the wet season. This consistent drop, particularly noticeable from August's 77%, not only marks a shift towards a slightly drier climate but also sets the stage for more comfortable outdoor conditions. As the year progresses, humidity levels gently stabilize, averaging between 77% and 80%, creating a pleasant environment that many residents and visitors alike appreciate.
Throughout the year, Bandung, Indonesia experiences an extreme UV Index, consistently demanding caution from sun seekers. In September, the UV Index reaches 14, just shy of the peak values seen in the early months, where it touches 16 in both January and February. Notably, this month maintains a burn time of only 10 minutes, underscoring the need for effective sun protection. As we transition towards the end of the year, the UV levels slightly dip, yet they remain significant, reiterating the city's persistent sun exposure. For those planning outdoor activities, staying informed is crucial; check the details at Bandung UV Index to ensure a safe and enjoyable experience under the sun.
UV Risk Categories
In Bandung, Indonesia, September brings a delightful continuation of the warm, sunny trend established over the preceding months. With an impressive 308 hours of sunshine, this month stands resilient among the highs of the year, particularly following the peak in July and August. This slight dip in sunshine hours, compared to the summer months, still offers plenty of opportunities for outdoor enthusiasts to revel in the pleasant climate. The overall pattern reveals a gradual decline as the year progresses, yet September remains a vibrant transition, balancing the lingering glow of summer with the approach of the shorter days ahead. As the city basks in the golden hues of September, visitors and locals alike can take advantage of the optimistic weather before the arrival of the rainy season.
September in Bandung, Indonesia, marks a shift in weather patterns as the likelihood of sunny days sits at 23%. While this figure is lower than the peak months of July and August, which boast chances of 40% and 34% respectively, it still offers a notable respite from the earlier months of the year, where sunshine is scarce. As the year progresses, sunlight gradually reemerges—April sees 28% sunny weather, tapering off to a more modest outlook in October at 16%. This trend highlights that while September may not deliver the brightest skies, it remains a transitional month, nudging towards clearer, sunnier days as Bandung heads into the final stretch of the year.
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.
As September unfolds in Bandung, Indonesia, the winds remain gentle, with an average speed of 1.2 m/s (3 mph). This consistent breeze mirrors the previous months, revealing a trend of relatively calm conditions that persist throughout the dry season. Noteworthy is the subtle dip in wind speeds from earlier months, particularly May and June, which both report a lull at 1.0 m/s (2 mph). September’s steady gusts create an inviting atmosphere for outdoor activities, allowing locals and visitors alike to enjoy the breathtaking landscapes without the disruptive force of strong winds. As the year transitions toward its close, Bandung’s gentle breezes maintain a serene ambiance that epitomizes the tranquil charm of this vibrant city.
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.
September and January in Bandung display some notable similarities and differences in weather patterns. Both months feature an average temperature of around 22°C (72°F), with highs reaching up to 29°C (84°F). However, September begins with slightly cooler nighttime temperatures, averaging 15°C (58°F), compared to January's milder minimum of 18°C (65°F).
In terms of precipitation, January is significantly wetter, receiving 350 mm (13.8 in) over 25 days, while September sees only 141 mm (5.6 in) over 17 days. This increased rainfall in January correlates with a higher humidity level of 84%, compared to September's 77%. Overall, while both months maintain warm average temperatures, January's weather is characterized by more substantial rainfall and humidity, making it a notably wetter month. For more detailed insights, you can check out Bandung weather in January.
September and February exhibit notable differences in weather patterns, despite having similar average temperatures. In September, temperatures range from a minimum of 15°C (58°F) to a maximum of 29°C (84°F), with an average of 22°C (72°F). The month sees 141 mm (5.6 in) of precipitation over 17 days and a humidity level of 77%. In contrast, February experiences slightly warmer temperatures, with a minimum of 18°C (65°F) and a maximum of 28°C (82°F), while maintaining an average of 22°C (71°F). However, February is significantly wetter, with 409 mm (16.1 in) of rain over 28 days and increased humidity at 86%. For more detailed information, visit Bandung weather in February.
In comparing the weather between September and March, we find some notable differences. September experiences a range of temperatures with a minimum of 15°C (58°F), an average of 22°C (72°F), and a maximum of 29°C (84°F). It sees moderate precipitation of 141 mm (5.6 in) over 17 days, accompanied by a humidity level of 77%. In contrast, March presents slightly warmer conditions, with a minimum of 18°C (65°F) and a maximum of 28°C (83°F), while maintaining an average temperature of 22°C (72°F). However, March is significantly wetter, receiving 441 mm (17.4 in) of precipitation over 30 days and higher humidity at 84%. For a more detailed look at March weather, you can visit Bandung weather in March.
When comparing the weather in September and April, both months share similar average temperatures, hovering around 22°C (72°F). However, April tends to feature slightly warmer minimum temperatures, starting at 17°C (62°F) compared to September's 15°C (58°F). Precipitation levels also differ significantly; April receives much more rain, with a total of 374 mm (14.7 in) over 29 days, unlike September, which experiences 141 mm (5.6 in) across 17 days. Humidity is consistently high in both months, but April is marginally more humid at 81% compared to September's 77%. For a detailed look at April weather specifically, you can check out Bandung weather in April.
September and May in Bandung present contrasting weather patterns. September typically sees temperatures ranging from a cool 15°C (58°F) to a warm 29°C (84°F), with an average of 22°C (72°F). While the month experiences considerable humidity at 77%, it only receives about 141 mm (5.6 in) of precipitation over 17 days. In contrast, May is slightly warmer, with temperatures ranging from 17°C (63°F) to 28°C (83°F), and an average of 23°C (73°F). However, May is notably wetter, accumulating 273 mm (10.8 in) of rain across 25 days and a higher humidity level of 80%. For more detailed information on May's climate, you can refer to Bandung weather in May.
In comparing the weather of September and June, we notice some interesting similarities and differences. Both months have an average temperature of 22°C (72°F), but September typically sees slightly higher maximum temperatures, reaching up to 29°C (84°F), compared to June's peak of 28°C (82°F). Interestingly, September has a lower minimum temperature of 15°C (58°F) than June, which starts at 16°C (61°F).
Precipitation levels are notably higher in June, with 155 mm (6.1 in) over 21 days, while September experiences 141 mm (5.6 in) across 17 days. This slight increase in rainfall in June corresponds with a marginally higher humidity level at 80%, compared to September's 77%. For a closer look at the specifics and trends of this month, you can refer to Bandung weather in June.
In comparing the weather patterns of September and July, September tends to be slightly warmer, with average temperatures reaching 22°C (72°F) and a maximum of 29°C (84°F), while July has an average temperature of 21°C (71°F) and a maximum of 28°C (82°F). Rainfall is significantly higher in September, with 141 mm (5.6 in) of precipitation over 17 days, compared to July's 77 mm (3.0 in) over 14 days. Humidity levels remain similar, with September at 77% and July at 79%. For more detailed insights, you can check Bandung weather in July.
In comparing the weather of August and September, we observe that both months experience similar temperature ranges, with September showing a slight increase in average temperature at 22°C (72°F) compared to August's 21°C (71°F). Both months reach a maximum of 29°C (84°F), but September is marked by significantly higher precipitation, totaling 141 mm (5.6 in) over 17 rainy days compared to August's 74 mm (2.9 in) across 15 days. Humidity levels remain constant at 77% for both months, contributing to a generally humid atmosphere. For a closer look at August weather specifics, check out Bandung weather in August.
In September, the weather in Bandung typically sees temperatures ranging from a minimum of 15°C (58°F) to a maximum of 29°C (84°F), with an average of 22°C (72°F). The month experiences moderate precipitation, totaling 141 mm (5.6 in) over 17 days, and a humidity level of 77%. In contrast, October brings slightly warmer temperatures, with minimums of 17°C (62°F) and the same maximum of 29°C (85°F), maintaining the average at 22°C (72°F). However, October is significantly wetter, with precipitation increasing to 313 mm (12.3 in) across 26 days, while humidity edges up to 78%. For more detailed information, you can check Bandung weather in October.
In September, the weather features a mild range of temperatures, with minimums around 15°C (58°F) and maximums peaking at 29°C (84°F), which results in a pleasant average of 22°C (72°F). However, the month also experiences considerable rainfall, with 141 mm (5.6 in) spread across 17 days and humidity levels at 77%. In contrast, November brings slightly warmer minimum temperatures at 17°C (63°F) and maintains the same average temperature as September, yet it sees a notable increase in rainfall, totaling 472 mm (18.6 in) over 28 days, accompanied by an uptick in humidity to 80%. This shift makes November much wetter, emphasizing the contrasting weather patterns between the two months. For more details, check out Bandung weather in November.
In comparing the weather between September and December, we notice some interesting contrasts. September tends to have slightly cooler temperatures, with a minimum of 15°C (58°F) and a maximum of 29°C (84°F), while December's temperatures have a higher minimum of 18°C (65°F) and a similar average of 22°C (72°F). However, December is marked by significantly increased rainfall, with precipitation reaching 451 mm (17.8 in) over 30 days, compared to September's 141 mm (5.6 in) over 17 days. Humidity levels remain fairly consistent, with September at 77% and December at 79%. For more details on this month's climate, check out Bandung weather in December.
As September rolls into Bandung, visitors can expect a marked shift in weather compared to the drier months. This time of year sees an increase in humidity and precipitation, with a notable 17 days of rain, leading to lush landscapes and vibrant greenery. The temperatures remain comfortably mild, averaging around 22°C, yet the higher humidity can make the air feel warmer. While the city is cooler than in the peak of summer, the frequent rain showers contribute to a more humid atmosphere, perfect for those who enjoy warm, tropical weather. For a deeper dive into Bandung's weather and climate patterns, check out Bandung Climate.