Last updated: August 21, 2025
September in Jepon, Indonesia, brings an inviting tropical atmosphere, characterized by a maximum temperature of 32°C (91°F) and a comfortable average of 28°C (83°F). The month experiences a minimum temperature of 24°C (76°F), perfect for outdoor adventures. With only 10 mm (0.4 in) of rain over 2 days, the humidity hovers around 72%, creating a warm yet pleasant environment. This blend of warmth and light moisture makes September an ideal time to explore the natural beauty and vibrant culture of Jepon.
In September, Jepon, Indonesia, experiences a delightful blend of warmth and comfort, making it an inviting time to visit. The temperatures range from a minimum of 24°C (76°F) to a maximum of 32°C (91°F), with an average hovering around 28°C (83°F). This month reflects a gentle transition, as the daily temperatures remain consistent with the preceding months, offering a slightly warmer feel compared to the August lows. As September unfolds, the lingering summer warmth fuels the vibrant landscapes, making it a prime time for outdoor exploration and enjoying the lush surroundings. Overall, the climatic patterns indicate a continued warmth as the region prepares to shift into the slightly cooler months ahead.
In September, Jepon, Indonesia experiences a noticeable shift in its precipitation patterns, marking the transition from the dry season to the rainier months ahead. With just 10 mm (0.4 in) of rainfall, accompanied by only 2 days of precipitation, the month remains relatively dry compared to the preceding months, where rainfall levels have already plummeted sharply. This trend, characterized by a significant decline in precipitation from the heavy downpours of the early year, sets the stage for a gradual increase in rainfall as October approaches, which typically sees a rise to 35 mm (1.4 in) over 7 days. As nature gears up for the wetter months, September serves as a brief interlude, hinting at the renewed vigor of rainfall to come in the following months.
As September rolls in, Jepon, Indonesia, experiences a notable dip in humidity, settling at 72%—the lowest of the year. This decline continues a downward trend that begins with August’s 74%, offering a breath of relief after the typically sultry summer months. From an annual high of 85% in February, the humidity gradually decreases as the year progresses, reaching its peak in the early months before tapering off towards the fall. The milder September air often signals a transition into a more comfortable seasonal climate, making it an ideal time for both residents and visitors to enjoy outdoor activities without the stifling stickiness of earlier months.
In September, Jepon, Indonesia experiences a notable UV Index of 15, categorizing exposure as extreme with a burn time of just 10 minutes. This marks one of the peak months in a consistent trend observed throughout the year, where the UV Index often hovers between 14 and 15 from January to March, as well as in October and November. Such high levels underscore the necessity for sun protection, as residents and visitors alike should remain vigilant against the potential for rapid skin damage. With such persistent extremes, understanding the UV Index is crucial for health and safety in Jepon. For more detailed information, you can explore the full data at Jepon UV Index.
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As September rolls in, Jepon, Indonesia, experiences a remarkable 311 hours of sunshine, maintaining a warm and inviting atmosphere for both locals and visitors. This month’s sunshine slightly dips from the summer peak of 322 hours in August, yet it remains a standout in a year that showcases a generally bright climate. The trend from January to September reveals a gradual increase in sunlight hours, culminating in the summer high of July and August, which are the sunniest months. Following this peak, September proves there’s still plenty of sunlight to enjoy before the transitional months of October and November. As those months approach, the sunshine hours drop but still hover above the yearly average, ensuring that the serene beauty of Jepon continues to shine brightly.
September in Jepon, Indonesia, offers a 34% chance of sunshine, placing it on the lower spectrum compared to the sunnier months of July and August, which boast chances over 50%. Following a peak in the summer months, the likelihood of clear skies begins to taper off into October. Interestingly, September stands as a transitional period, where the lingering warmth of late summer begins to give way to the wetter months ahead. With sunny days becoming less frequent, September still holds a charm for those looking to experience a mix of summer’s brightness and the subtle onset of the rainy season.
In Jepon, Indonesia, the daylight duration exhibits a fascinating rhythm throughout the year. After consistently enjoying 12 hours of daylight from January to March, there’s a gentle decline to 11 hours during the warmer months from April to August. This shift reflects the country's tropical climate, where daylight slightly wanes as the seasons change. However, by September, the sun makes a triumphant return, offering a refreshing 12 hours of daylight once again, signaling the onset of a more balanced light cycle that continues through the last quarter of the year. This natural ebb and flow not only influences the local lifestyle but also highlights the unique beauty of Indonesia's equatorial setting.
In September, Jepon, Indonesia experiences a notable balance in its wind patterns, with an average speed of 3.9 m/s (9 mph), matching the breezy flows seen in both June and August. After a peak in February with winds reaching 5.7 m/s (13 mph), the speed gradually declined during the warmer months, before stabilizing in the autumn. This consistent September wind creates a comfortable atmosphere, perfect for outdoor activities. As the year progresses, a general downward trend is evident, with wind speeds tapering off towards the end of the year, particularly in November and October, where it drops to 1.9 m/s (4 mph) and 2.5 m/s (6 mph) respectively, suggesting a serene transition into the Indonesian wet season.
Weather in Jepon varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Jepon, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is warm and relatively dry, with average temperatures ranging from a minimum of 24°C (76°F) to a maximum of 32°C (91°F) and only about 10 mm (0.4 in) of rain over just 2 days. Humidity is moderate at 72%, making it a comfortable time for outdoor activities. In contrast, January experiences slightly warmer temperatures, with minimums around 25°C (77°F) and averages peaking at 32°C (90°F). However, this month is characterized by significantly heavier rainfall, totaling 275 mm (10.8 in) over 25 days, and higher humidity levels of 81%. This stark difference in precipitation and humidity suggests that while September offers a more stable climate, January brings a lush, wet atmosphere. For more specific details on January weather, you can refer to Jepon weather in January.
In comparing the weather of September and February, both months exhibit warm temperatures, with September having a slightly higher average max temperature of 32°C (91°F) compared to February's 31°C (88°F). However, September tends to be drier, featuring only 10 mm (0.4 in) of rainfall over just 2 days, whereas February experiences significantly more precipitation, totaling 279 mm (11.0 in) over 27 days. The humidity also increases in February, reaching 85%, compared to 72% in September. For more detailed information, check out Jepon weather in February.
In September, the weather is warm and relatively dry, with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 32°C (91°F) and an average of 28°C (83°F). The humidity sits at a comfortable 72% with only 10 mm (0.4 in) of precipitation over just 2 days. In contrast, March brings slightly warmer conditions with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 31°C (88°F), and an average of 27°C (82°F). However, it is significantly wetter, with total precipitation reaching 271 mm (10.7 in) spread across 30 days, resulting in higher humidity levels of 83%. For more detailed information, you can check Jepon weather in March.
When comparing the weather in September and April, it is evident that both months have a similar average temperature of 28°C (83°F), but the conditions diverge significantly in other aspects. September features warmer nights with minimum temperatures around 24°C (76°F) and only 10 mm (0.4 in) of precipitation over just 2 days, resulting in a relatively dry atmosphere with 72% humidity. In contrast, April experiences slightly warmer nights at 25°C (77°F) but sees a substantial increase in rainfall, totaling 164 mm (6.4 in) across 21 days, leading to higher humidity levels at 80%. Thus, while both months boast warm temperatures, April is characterized by its increased moisture and frequent rain. For further details, you can check out Jepon weather in April.
In September, the weather is generally warm with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 32°C (91°F), and the average temperature sits at 28°C (83°F). This month sees relatively low precipitation, with only 10 mm (0.4 in) spread over just 2 days, and humidity at a moderate 72%.
Conversely, May experiences slightly higher humidity levels at 81% and a similar average temperature of 28°C (84°F). However, it is marked by significantly more rainfall, totaling 77 mm (3.0 in) over 10 days, making it a much wetter month compared to September. For more detailed weather insights, you can check Jepon weather in May.
In comparing the weather between September and June, September tends to be slightly warmer with average temperatures around 28°C (83°F) and a maximum of 32°C (91°F), while June has a similar average temperature of 28°C (82°F) but a slightly lower maximum of 31°C (88°F). However, June experiences significantly more rainfall, with 53 mm (2.1 in) over 9 days compared to September's much drier conditions, which see only 10 mm (0.4 in) of precipitation over just 2 days. Additionally, humidity levels are higher in June at 80%, compared to 72% in September. For a deeper insight into June weather conditions, you can check Jepon weather in June.
In comparing the weather in September and July, both months are characterized by warm temperatures, with September having a minimum of 24°C (76°F) and a maximum of 32°C (91°F), while July sees slightly higher minimum and maximum temperatures at 25°C (77°F) and 31°C (87°F), respectively. The average temperatures are quite similar, with September averaging 28°C (83°F) and July at 28°C (82°F). However, July experiences more precipitation, totaling 14 mm (0.5 in) compared to September's 10 mm (0.4 in), both occurring over two days. Additionally, humidity levels are higher in July at 78%, compared to September's 72%, making July feel a bit more muggy. For more detailed insights, you can check out Jepon weather in July.
In September, the weather features a slightly warmer average temperature of 28°C (83°F) compared to August's 28°C (82°F), with maximum temperatures peaking at 32°C (91°F) against August's 31°C (89°F). Both months have a minimum temperature of 24°C (76°F), but September experiences a bit more rainfall, totaling 10 mm (0.4 in) over 2 days, while August records only 5 mm (0.2 in) over 1 day. Humidity levels are quite similar, with September at 72% and August at 74%. For a more detailed look at August conditions, you can check Jepon weather in August.
In September, the weather is characterized by warm temperatures, with a minimum of 24°C (76°F) and an average of 28°C (83°F), reaching a maximum of 32°C (91°F). The month sees relatively low precipitation, only 10 mm (0.4 in) over just 2 days, while the humidity remains steady at 72%. In contrast, October experiences slightly warmer conditions, with a minimum of 25°C (78°F) and an average of 29°C (84°F), peaking at 33°C (91°F). However, October also brings increased rainfall, recording 35 mm (1.4 in) over 7 days, while humidity stays consistent at 72%. For a deeper look at typical October weather patterns, you can visit Jepon weather in October.
In September, the weather tends to be warm and relatively dry, with average temperatures around 28°C (83°F) and minimal rainfall of only 10 mm over just 2 days. The humidity is moderately high at 72%. In contrast, November experiences slightly warmer temperatures, with an average of 28°C (83°F), but the maximum can reach up to 34°C (93°F). However, November is significantly wetter, receiving about 193 mm of precipitation over 19 days, while humidity remains comparable at 73%. For more detailed insights, you can check Jepon weather in November.
In September, the weather tends to be warm and relatively dry, with average temperatures hovering around 28°C (83°F) and only 10 mm of precipitation over two days. In contrast, December experiences hotter temperatures with an average of 28°C (82°F), but it is significantly wetter, receiving 295 mm of rain across 29 days. This shift in precipitation and humidity levels—from 72% in September to a slightly higher 75% in December—highlights the contrast between the two months. For a more detailed outlook on December weather, you can visit Jepon weather in December.
September in Jepon brings a delightful transition into the dry season, characterized by warm temperatures and relatively low humidity compared to the preceding months. With an average high of 28°C (83°F), the balmy days invite outdoor adventures. Rainfall is minimal, with only a couple of rainy days, allowing for plenty of sunshine and pleasant evenings. This month stands out, as the pleasant climate makes it perfect for exploration and relaxation alike. For a more detailed look at what the weather has to offer throughout the year, visit Jepon Climate.