Poso Weather in September
Average highs run from 25°C on September 1 to 26°C on September 30, and lows from 18°C to 19°C. Normal precipitation for the month is 123 mm over about 15 wet days.
September day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
September at a glance
- Average high
- 25°C
- Average low
- 18°C
- Precipitation
- 123 mm
- Reanalysis high
- 29°CSep 25, 1997
- Reanalysis low
- 14°CSep 9, 2015
- Daylight
- 12 h 05 min to 12 h 07 min
- Cloud cover
- 62%
- Humidity
- 87%
- Dew point
- 19°C
- Wind
- 3.6 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 25°C | 18°C | 26°C 2015 | 17°C 2015 | 56% |
| Sep 2 | 25°C | 18°C | 27°C 2009 | 17°C 2009 | 56% |
| Sep 3 | 25°C | 18°C | 27°C 2002 | 17°C 2001 | 54% |
| Sep 4 | 25°C | 18°C | 27°C 2001 | 15°C 2015 | 53% |
| Sep 5 | 25°C | 18°C | 26°C 2002 | 17°C 1997 | 52% |
| Sep 6 | 25°C | 18°C | 27°C 2005 | 16°C 1991 | 52% |
| Sep 7 | 25°C | 18°C | 27°C 2009 | 16°C 2006 | 52% |
| Sep 8 | 25°C | 18°C | 27°C 2019 | 14°C 2015 | 50% |
| Sep 9 | 25°C | 18°C | 27°C 2002 | 14°C 2015 | 48% |
| Sep 10 | 25°C | 18°C | 27°C 2002 | 15°C 2019 | 48% |
| Sep 11 | 25°C | 18°C | 26°C 1996 | 15°C 2019 | 47% |
| Sep 12 | 25°C | 18°C | 27°C 2016 | 14°C 1997 | 47% |
| Sep 13 | 25°C | 18°C | 26°C 2009 | 15°C 1997 | 47% |
| Sep 14 | 25°C | 18°C | 27°C 1991 | 16°C 1997 | 46% |
| Sep 15 | 25°C | 18°C | 27°C 1991 | 15°C 1993 | 46% |
| Sep 16 | 25°C | 18°C | 27°C 2014 | 17°C 1994 | 46% |
| Sep 17 | 25°C | 18°C | 27°C 2014 | 15°C 1994 | 46% |
| Sep 18 | 25°C | 18°C | 27°C 1991 | 15°C 1994 | 46% |
| Sep 19 | 25°C | 18°C | 27°C 2019 | 16°C 1994 | 46% |
| Sep 20 | 25°C | 18°C | 28°C 1991 | 17°C 2018 | 46% |
| Sep 21 | 25°C | 19°C | 28°C 1991 | 15°C 2018 | 45% |
| Sep 22 | 25°C | 19°C | 28°C 1991 | 16°C 2015 | 45% |
| Sep 23 | 26°C | 19°C | 29°C 1991 | 14°C 2015 | 45% |
| Sep 24 | 26°C | 19°C | 28°C 1997 | 14°C 2015 | 47% |
| Sep 25 | 26°C | 19°C | 29°C 1997 | 15°C 2014 | 48% |
| Sep 26 | 26°C | 19°C | 28°C 1991 | 14°C 2014 | 48% |
| Sep 27 | 26°C | 19°C | 27°C 1991 | 17°C 2014 | 48% |
| Sep 28 | 26°C | 19°C | 28°C 1997 | 16°C 1992 | 48% |
| Sep 29 | 26°C | 19°C | 28°C 1997 | 15°C 2002 | 50% |
| Sep 30 | 26°C | 19°C | 29°C 1997 | 16°C 2014 | 50% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+8).
- September 1
- sunrise 5:55 AM, sunset 6:00 PM
- September 30
- sunrise 5:44 AM, sunset 5:51 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.