Iaçu Weather in September
Average highs run from 28°C on September 1 to 31°C on September 30, and lows from 16°C to 18°C. Normal precipitation for the month is 51 mm over about 12 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
- 30°C
- Average low
- 17°C
- Precipitation
- 51 mm
- Reanalysis high
- 36°CSep 11, 1997
- Reanalysis low
- 12°CSep 2, 2006
- Daylight
- 11 h 52 min to 12 h 12 min
- Cloud cover
- 48%
- Humidity
- 74%
- Dew point
- 16°C
- Wind
- 15.1 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 | 28°C | 16°C | 32°C 1993 | 14°C 2006 | 40% |
| Sep 2 | 29°C | 16°C | 34°C 2002 | 12°C 2006 | 41% |
| Sep 3 | 29°C | 16°C | 33°C 2006 | 14°C 1999 | 42% |
| Sep 4 | 29°C | 16°C | 33°C 2014 | 13°C 1999 | 43% |
| Sep 5 | 29°C | 16°C | 32°C 2009 | 14°C 2010 | 44% |
| Sep 6 | 29°C | 16°C | 32°C 2008 | 13°C 1996 | 44% |
| Sep 7 | 29°C | 16°C | 34°C 2008 | 12°C 1991 | 45% |
| Sep 8 | 29°C | 16°C | 32°C 2008 | 12°C 1991 | 45% |
| Sep 9 | 29°C | 16°C | 33°C 1997 | 14°C 2006 | 45% |
| Sep 10 | 29°C | 16°C | 35°C 1997 | 15°C 2011 | 44% |
| Sep 11 | 29°C | 17°C | 36°C 1997 | 14°C 2010 | 44% |
| Sep 12 | 29°C | 17°C | 32°C 2008 | 13°C 2010 | 44% |
| Sep 13 | 29°C | 17°C | 33°C 2008 | 13°C 1994 | 45% |
| Sep 14 | 29°C | 17°C | 34°C 2008 | 13°C 1994 | 45% |
| Sep 15 | 29°C | 17°C | 33°C 1997 | 14°C 2014 | 44% |
| Sep 16 | 30°C | 17°C | 34°C 2001 | 15°C 2011 | 44% |
| Sep 17 | 30°C | 17°C | 33°C 2001 | 15°C 2002 | 42% |
| Sep 18 | 30°C | 17°C | 34°C 1993 | 14°C 2002 | 41% |
| Sep 19 | 30°C | 17°C | 34°C 1993 | 14°C 2011 | 41% |
| Sep 20 | 30°C | 17°C | 35°C 1993 | 13°C 2011 | 41% |
| Sep 21 | 30°C | 17°C | 34°C 1997 | 13°C 2011 | 40% |
| Sep 22 | 30°C | 17°C | 36°C 1997 | 15°C 2011 | 38% |
| Sep 23 | 31°C | 17°C | 34°C 2008 | 15°C 2003 | 37% |
| Sep 24 | 31°C | 17°C | 35°C 2009 | 16°C 1999 | 36% |
| Sep 25 | 31°C | 18°C | 36°C 1993 | 15°C 2017 | 36% |
| Sep 26 | 31°C | 18°C | 35°C 1997 | 16°C 1999 | 36% |
| Sep 27 | 31°C | 18°C | 34°C 2005 | 16°C 1997 | 35% |
| Sep 28 | 31°C | 18°C | 35°C 1993 | 15°C 2000 | 34% |
| Sep 29 | 31°C | 18°C | 36°C 2009 | 15°C 2007 | 33% |
| Sep 30 | 31°C | 18°C | 34°C 2009 | 15°C 2012 | 33% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- September 1
- sunrise 5:45 AM, sunset 5:37 PM
- September 30
- sunrise 5:25 AM, sunset 5:37 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.