Bonan Weather in September
Average highs run from 24°C on September 1 to 22°C on September 30, and lows from 15°C to 13°C. Normal precipitation for the month is 135 mm over about 21 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
- 23°C
- Average low
- 14°C
- Precipitation
- 135 mm
- Reanalysis high
- 27°CSep 12, 2009
- Reanalysis low
- 3°CSep 26, 1997
- Daylight
- 12 h 39 min to 11 h 56 min
- Cloud cover
- 79%
- Humidity
- 80%
- Dew point
- 14°C
- Wind
- 6.1 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 | 24°C | 15°C | 27°C 2011 | 11°C 1992 | 72% |
| Sep 2 | 24°C | 15°C | 27°C 2006 | 11°C 1993 | 71% |
| Sep 3 | 24°C | 14°C | 26°C 2006 | 12°C 2012 | 70% |
| Sep 4 | 24°C | 14°C | 26°C 2006 | 11°C 1993 | 69% |
| Sep 5 | 23°C | 14°C | 26°C 2011 | 11°C 2002 | 69% |
| Sep 6 | 23°C | 14°C | 26°C 1994 | 11°C 1997 | 68% |
| Sep 7 | 23°C | 14°C | 26°C 2010 | 10°C 1998 | 68% |
| Sep 8 | 23°C | 14°C | 26°C 1992 | 11°C 1998 | 69% |
| Sep 9 | 23°C | 14°C | 26°C 1998 | 12°C 1998 | 69% |
| Sep 10 | 23°C | 14°C | 26°C 1994 | 11°C 2004 | 68% |
| Sep 11 | 23°C | 14°C | 26°C 2009 | 10°C 2004 | 68% |
| Sep 12 | 23°C | 14°C | 27°C 2009 | 11°C 2004 | 68% |
| Sep 13 | 23°C | 14°C | 26°C 2002 | 11°C 2004 | 69% |
| Sep 14 | 23°C | 14°C | 27°C 1998 | 9°C 2004 | 70% |
| Sep 15 | 23°C | 14°C | 25°C 1996 | 10°C 2004 | 70% |
| Sep 16 | 23°C | 14°C | 27°C 2014 | 12°C 2004 | 69% |
| Sep 17 | 23°C | 14°C | 26°C 1998 | 12°C 2000 | 68% |
| Sep 18 | 23°C | 14°C | 25°C 2013 | 10°C 2007 | 67% |
| Sep 19 | 23°C | 14°C | 26°C 2003 | 10°C 2007 | 66% |
| Sep 20 | 22°C | 13°C | 25°C 2008 | 8°C 2007 | 66% |
| Sep 21 | 22°C | 13°C | 26°C 2010 | 8°C 2007 | 66% |
| Sep 22 | 22°C | 13°C | 25°C 1994 | 9°C 2007 | 65% |
| Sep 23 | 22°C | 13°C | 25°C 1994 | 8°C 1995 | 62% |
| Sep 24 | 22°C | 13°C | 26°C 2008 | 8°C 1995 | 61% |
| Sep 25 | 22°C | 13°C | 26°C 1998 | 5°C 1997 | 61% |
| Sep 26 | 22°C | 13°C | 25°C 2006 | 3°C 1997 | 60% |
| Sep 27 | 22°C | 13°C | 24°C 1994 | 4°C 1997 | 58% |
| Sep 28 | 22°C | 13°C | 25°C 2015 | 5°C 1997 | 58% |
| Sep 29 | 22°C | 13°C | 26°C 2015 | 9°C 1998 | 57% |
| Sep 30 | 22°C | 13°C | 26°C 2015 | 8°C 1998 | 57% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+8).
- September 1
- sunrise 7:02 AM, sunset 7:41 PM
- September 30
- sunrise 7:14 AM, sunset 7:10 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.