September Weather in Seraya, Indonesia

Last updated: August 21, 2025

In September, Seraya, Indonesia, experiences a mild tropical climate characterized by an average temperature of 26°C (79°F), with daily highs reaching up to 28°C (83°F) and lows around 24°C (75°F). The month brings about 25 mm (1.0 in) of rainfall spread across approximately 8 days, contributing to a humidity level of 71% that envelops the island in a warm, moist embrace. Whether you're exploring lush landscapes or relaxing by the beach, September's weather offers a pleasant, tropical backdrop for all outdoor activities.

September Temperature in Seraya

In September, Seraya, Indonesia experiences a subtle transition in its tropical climate, with temperatures ranging from a comfortable 24°C (75°F) at night to a pleasant 28°C (83°F) during the day. This month marks a shift from the cooler August, as the average temperature edges up to 26°C (79°F), providing a warm yet inviting atmosphere for both locals and visitors. As the dry season starts to wane, the air remains humid but is still ideal for outdoor exploration. With these mild temperatures, September offers an excellent opportunity to enjoy the lush landscapes and vibrant culture of Seraya, making it a prime time for adventure and relaxation alike.

September Weather in Seraya: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Seraya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Seraya, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec818081828280797879808181
Data source: Temperature data for Seraya generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Seraya

September in Seraya, Indonesia marks a notable decline in precipitation, with only 25 mm (1.0 in) of rain recorded over 8 days. This reduction follows a trend of decreasing rainfall as the region transitions into drier months. The rainfall is a sharp contrast to the heavier downpours experienced earlier in the year, with January and February typically showcasing much greater precipitation levels at 212 mm (8.3 in) and 217 mm (8.6 in), respectively. As the rainy season approaches, the amount of rain starts to pick up again in October, but September's milder conditions provide a brief respite, hinting at the changing seasons in this vibrant tropical climate.

September Precipitation Trends in Seraya

The chart displays monthly precipitation patterns in Seraya, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Seraya, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec21221715083353330332538150175
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Seraya

September in Seraya, Indonesia, marks a notable shift in humidity levels as it dips to 71%, reflecting a gradual decrease from the warmer, more humid summer months. Following a peak of 84% in February, humidity steadily declined over the months, reaching its lowest point since July. This trend indicates that as the dry season approaches, the air in Seraya becomes progressively less saturated, providing a refreshing respite from the intense humidity experienced earlier in the year. With October's humidity expected to drop further to 69%, the transition signifies a welcome change for both residents and visitors seeking more comfortable outdoor experiences.

September Average Humidity in Seraya

This chart illustrates the average monthly humidity levels in Seraya, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Seraya is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%84%82%80%79%76%73%72%71%69%69%72%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Seraya

In September, Seraya, Indonesia experiences a UV Index of 15, placing it in the extreme exposure category, which means a burn can occur in just 10 minutes. This month continues a consistent trend observed since the start of the year, where the UV Index remains alarmingly high throughout. Notably, the UV Index fluctuates slightly, with peaks observed in February and a steady extreme risk dominating most months. As we transition from August to September, it's vital for residents and visitors alike to remain vigilant about sun safety. For detailed insights, check out the Seraya UV Index.

Maximum UV Index Levels in Seraya for September

The chart shows the monthly maximum UV Index (UVI) for Seraya in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Seraya typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151615151310111315151414
Data source: Seraya September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Seraya

September in Seraya, Indonesia, continues the trend of abundant sunshine with 304 hours of delightful daylight. As the year progresses from the sunny heights of July and August, which boast 308 and 311 hours respectively, September maintains a robust level of brightness, providing a perfect backdrop for outdoor adventures. It’s evident that the island enjoys its peak sunshine during the mid-year months, leading into a gradual transition towards the end of the year, where hours of sunlight begin to taper off slightly. With October ahead promising even more light at 319 hours, September acts as a splendid bridge, ensuring that the warmth and vibrancy of Seraya persist a little longer before the months of reduced sunshine set in.

Monthly Sunshine Duration in Seraya: September Highlighted

The September sunshine duration represents the total number of hours Seraya experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec229h270h295h294h307h295h308h311h304h319h293h291h
Data source: Seraya September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Seraya During September

In September, Seraya, Indonesia, experiences a notable shift in weather patterns, with a 42% chance of sunny days that sets a contrasting tone after the typically wetter months. Following the peak sunny months of July and May—each boasting over 50% chances—the likelihood of sunshine begins to dip, suggesting a transition towards the rainier season. While September may not offer the peak sunshine experienced earlier in the summer, it still stands out as a relatively bright month compared to the gloomier stretch of October and November, where chances plummet to 34% and 10%, respectively. Thus, September presents a unique opportunity to enjoy some sun before the clouds roll in for the year’s end.

Percentage of Sunny Days in September in Seraya

The chart illustrates the percentage of sunny days in Seraya throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Seraya experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec4%6%18%52%53%54%61%52%42%34%10%16%
Data source: Seraya September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Seraya in September

In Seraya, Indonesia, the daylight duration exhibits a fascinating rhythm throughout the year. From January to March, the island enjoys a consistent 12 hours of daylight, embodying a sense of balance and harmony. However, as the months progress into April through August, this duration slightly decreases to 11 hours, marking a subtle shift that reflects the region's seasonal changes. The arrival of September sees a welcome return to 12 hours of daylight, signaling the transition back to longer days as the region moves into the latter part of the year. This pattern persists through October, November, and December, reinforcing the notion of daylight consistency that characterizes Seraya's enchanting climate, inviting both locals and visitors to bask in its golden hours.

Average Daylight Hours in Seraya for September

The chart illustrates the variation in daylight duration in Seraya throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 32m12h 21m12h 7m11h 53m11h 42m11h 37m11h 40m11h 49m12h 2m12h 16m12h 29m12h 35m
Data source: Seraya daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Seraya

In Seraya, Indonesia, September marks the tail end of a breezy period, with average wind speeds around 4.6 m/s (10 mph), mirroring the invigorating gusts of both July and August. This uptick highlights a noticeable trend as the region transitions from the gentle breezes of spring to more robust winds as summer fades. The winds reach their peak in October at 5.1 m/s (11 mph), indicating the onset of a more dynamic climatic phase. As the year progresses, the variability in wind speed reflects the seasonal shifts, with winter months showing a stark decline; highlighting how Seraya's winds embody the rhythm of nature, offering sailors and wind enthusiasts an ideal setting for their adventures before the calmer currents set in once again.

Average September Wind Speed in Seraya

The chart displays monthly wind speed patterns in Seraya, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.03.02.33.23.32.64.64.84.6 m/s5.12.73.0
Data source: Seraya September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Seraya Compares to Other Months

Weather in Seraya varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Seraya, focusing on differences in temperature, rainfall, humidity, and UV levels.

In comparing the weather of September and January, January tends to be slightly warmer, with average temperatures rising from 26°C (79°F) in September to 27°C (81°F). However, January experiences significantly more rainfall, with 212 mm (8.3 in) of precipitation compared to September's 25 mm (1.0 in) and almost three times the number of rainy days, averaging 22 days in January versus just 8 in September. Additionally, the humidity is higher in January at 78%, compared to September's 71%. This contrast highlights the transition from the relatively dry, warm conditions of September to the wetter, more humid climate characteristic of January. For more detailed information, you can visit Seraya weather in January.

September and February exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 28°C (83°F), with an average of 26°C (79°F). The month experiences relatively low rainfall, totaling 25 mm (1.0 in) over about 8 days, and a humidity level of 71%. In contrast, February sees slightly warmer conditions, with temperatures peaking at 29°C (85°F) and an average of 27°C (81°F). However, it also brings a significant increase in precipitation, accumulating 217 mm (8.6 in) across 25 days, and higher humidity at 84%. For a detailed overview, check Seraya weather in February.

In comparing the weather between September and March, we see a notable difference in both temperature and precipitation. September typically enjoys a milder temperature range, with a minimum of 24°C (75°F) and a maximum of 28°C (83°F), while March is slightly warmer with a minimum of 25°C (77°F) and a maximum of 29°C (85°F). However, March is significantly wetter, receiving 150 mm (5.9 in) of rain over 24 days, compared to September's 25 mm (1.0 in) over just 8 days. Additionally, March experiences higher humidity at 82%, compared to September's 71%. For more details, visit Seraya weather in March.

In comparing the weather between September and April, we notice a slight increase in temperature during April, with average temperatures ranging from a minimum of 26°C (78°F) to a maximum of 30°C (86°F), compared to September's 24°C (75°F) to 28°C (83°F). Alongside the higher temperatures, April also sees more significant rainfall, with total precipitation reaching 83 mm (3.3 in) over 14 days, whereas September has only 25 mm (1.0 in) over 8 days. Additionally, humidity levels peak in April at 80%, slightly higher than September's 71%. For more details about April weather, refer to Seraya weather in April.

In comparing the weather of September and May, we observe that September typically has slightly cooler temperatures, with an average of 26°C (79°F) compared to May's warmer average of 28°C (82°F). Additionally, the maximum temperatures in September reach up to 28°C (83°F), while May can see highs of 30°C (86°F). Precipitation also varies, with September receiving about 25 mm (1.0 in) over 8 days, whereas May experiences a bit more rainfall at 35 mm (1.4 in) over 9 days. Humidity levels are higher in May at 79%, compared to September's 71%. For more detailed insights, you can check Seraya weather in May.

In September, the weather tends to be slightly milder compared to June, with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (83°F). This is in contrast to June, which experiences a slightly warmer range with temperatures between 25°C (77°F) and 29°C (85°F). Additionally, September sees lower precipitation totals at 25 mm (1.0 in) over 8 days, compared to June's 33 mm (1.3 in) across 9 days. Humidity levels are also a bit lower in September at 71%, while June has a higher humidity level of 76%. For a detailed look at the weather specifics, you can view Seraya weather in June.

In comparing the weather of September and July, we see that both months feature similar temperature ranges, with minimums around 24°C (75°F), average temperatures of 26°C (79°F), and maximums reaching 28°C (83°F). However, September experiences slightly less precipitation, with 25 mm (1.0 in) over 8 days, compared to July's 30 mm (1.2 in) accumulated over 7 days. Humidity is also marginally lower in September, at 71%, compared to July's 73%. For more detailed information on July weather, you can check Seraya weather in July.

In comparing the weather between September and August, we see some subtle yet noteworthy differences. Both months share similar temperature ranges, with September having a minimum of 24°C (75°F) and an average of 26°C (79°F), while August's minimum is slightly cooler at 23°C (74°F). Precipitation levels in September are lower at 25 mm (1.0 in) over 8 days, compared to August's 33 mm (1.3 in) across 10 days. Additionally, humidity levels are fairly comparable, with September at 71% and August at 72%. Overall, September offers slightly drier and perhaps more comfortable weather, making it a favorable month to experience the region. For a detailed look at the weather in August, check out Seraya weather in August.

In September, the weather is characterized by warm temperatures, with minimums around 24°C (75°F) and maximums reaching 28°C (83°F), accompanied by an average humidity of 71%. This month experiences moderate rainfall, totaling 25 mm (1.0 in) over about 8 days, making it slightly drier compared to October. In contrast, October sees a slight increase in temperatures, with minimums rising to 25°C (77°F) and maximums reaching 29°C (84°F), while average humidity remains fairly stable at 69%. However, October experiences more precipitation, totaling 38 mm (1.5 in) across 12 days, indicating a more humid and wetter pattern. For more detailed insights, check out Seraya weather in October.

In September, the weather typically features a warm climate with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (83°F) and an average of 26°C (79°F). This month experiences relatively low rainfall, totaling around 25 mm (1.0 in) over about 8 days, accompanied by a humidity level of 71%.

In contrast, November sees slightly warmer conditions with minimum temperatures of 25°C (77°F) and maximums reaching 29°C (84°F), while the average stands at 27°C (81°F). However, this month is much wetter, with precipitation totaling 150 mm (5.9 in) spread over 20 days, and humidity levels dropping slightly to 69%. For more information, check out Seraya weather in November.

September and December weather exhibit some notable differences, particularly in precipitation and temperature. In September, temperatures are slightly lower, with average highs around 28°C (83°F) and relatively moderate rainfall of 25 mm spread over 8 days. In contrast, December experiences a slight rise in temperature, with averages peaking at 29°C (85°F) and a significant increase in precipitation, totaling 175 mm over 26 days. Both months maintain similar humidity levels, around 71-72%, but December’s frequent rain contributes to a more humid atmosphere. For more detailed information on December’s weather, you can check Seraya weather in December.

Compare Seraya's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Seraya

In September, Seraya experiences a delightful transition as temperatures remain pleasantly warm, averaging around 26°C (79°F). This month stands out with its moderate humidity and occasional rainfall, totaling about 25 mm over 8 days, creating a refreshing atmosphere. Compared to the sweltering heat of the preceding months, September offers a more temperate climate that's perfect for outdoor activities, while still retaining that characteristic tropical charm. For those seeking a deeper understanding of how weather behaves throughout the year in this beautiful region, visit Seraya Climate.