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September Weather in Poso, Indonesia

Last updated: August 23, 2025

In Poso, Indonesia, the average temperature in September hovers around 24°C (76°F). During this period, you can expect minimum temperatures to dip to 18°C (65°F) and maximums reaching up to 34°C (93°F). With an average humidity of 84%, prepare for a wet climate, as precipitation totals around 253 mm (10.0 in) over 20 days. Stay dry and enjoy your time!

September Temperature in Poso

In September in Poso, the average temperature is 24°C (76°F), with maximums reaching 34°C (93°F) and minimums dropping as low as 18°C (65°F). This pleasant climate makes Poso a great destination for outdoor activities and sightseeing during this time of year.

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

The chart illustrates September temperature patterns in Poso, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Poso, September typically has an average temperature of 24°C (76°F), with highs reaching up to 34°C (93°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec757575757675757576767575
Data source: Temperature data for Poso generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Poso

In Poso in September, the total precipitation amount is 253 mm (10.0 in) spread over 20 days.

September Precipitation Trends in Poso

The chart displays monthly precipitation patterns in Poso, 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 Poso, September typically receives around 253 mm (10.0 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec245237348471388396232224253264377305
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Poso

In Poso in September humidity is 84%. With an average temperature of 24°C (76°F), this humidity feels like a warm, damp embrace that can make outdoor activities feel sticky and uncomfortable, requiring frequent breaks in the shade and plenty of hydration for travelers.

September Average Humidity in Poso

This chart illustrates the average monthly humidity levels in Poso, 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 Poso is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%88%88%87%84%85%88%89%84%84%83%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Poso

In Poso in September, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Poso.

Maximum UV Index Levels in Poso for September

The chart shows the monthly maximum UV Index (UVI) for Poso 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 Poso typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161717161412131515151514
Data source: Poso 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.

How September Weather in Poso Compares to Other Months

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

This table compares monthly weather conditions in Poso, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)245 mm (9.6 inches)86%extreme
February Weather24°C (75°F)237 mm (9.3 inches)88%extreme
March Weather24°C (75°F)348 mm (13.7 inches)88%extreme
April Weather24°C (75°F)471 mm (18.5 inches)87%extreme
May Weather24°C (76°F)388 mm (15.3 inches)84%extreme
June Weather24°C (75°F)396 mm (15.6 inches)85%extreme
July Weather24°C (75°F)232 mm (9.1 inches)88%extreme
August Weather24°C (76°F)224 mm (8.8 inches)89%extreme
September Weather24°C (76°F)253 mm (10.0 inches)84%extreme
October Weather24°C (76°F)264 mm (10.4 inches)84%extreme
November Weather24°C (76°F)377 mm (14.8 inches)83%extreme
December Weather24°C (76°F)305 mm (12.0 inches)85%extreme

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