Arivonimamo Weather in September
Average highs run from 22°C on September 1 to 25°C on September 30, and lows from 10°C to 12°C. Normal precipitation for the month is 24 mm over about 6 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
- 24°C
- Average low
- 11°C
- Precipitation
- 24 mm
- Reanalysis high
- 30°CSep 15, 2017
- Reanalysis low
- 6°CSep 4, 1993
- Daylight
- 11 h 45 min to 12 h 15 min
- Cloud cover
- 43%
- Humidity
- 73%
- Dew point
- 11°C
- Wind
- 15.5 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 | 22°C | 10°C | 25°C 2017 | 7°C 1997 | 21% |
| Sep 2 | 23°C | 10°C | 26°C 2008 | 6°C 1993 | 21% |
| Sep 3 | 23°C | 10°C | 25°C 2008 | 6°C 1993 | 20% |
| Sep 4 | 23°C | 10°C | 26°C 2008 | 6°C 1993 | 20% |
| Sep 5 | 23°C | 10°C | 25°C 2011 | 6°C 2003 | 20% |
| Sep 6 | 23°C | 10°C | 25°C 2000 | 6°C 1994 | 19% |
| Sep 7 | 23°C | 10°C | 26°C 2007 | 7°C 1997 | 18% |
| Sep 8 | 23°C | 10°C | 26°C 2016 | 6°C 1994 | 18% |
| Sep 9 | 23°C | 10°C | 26°C 2016 | 8°C 2006 | 18% |
| Sep 10 | 24°C | 10°C | 27°C 2016 | 6°C 2006 | 18% |
| Sep 11 | 24°C | 10°C | 26°C 2017 | 7°C 1995 | 17% |
| Sep 12 | 24°C | 10°C | 26°C 2017 | 6°C 2006 | 17% |
| Sep 13 | 24°C | 10°C | 27°C 2014 | 7°C 2000 | 18% |
| Sep 14 | 24°C | 11°C | 29°C 2017 | 7°C 2005 | 17% |
| Sep 15 | 24°C | 11°C | 30°C 2017 | 6°C 2010 | 16% |
| Sep 16 | 24°C | 11°C | 29°C 2017 | 7°C 2002 | 16% |
| Sep 17 | 24°C | 11°C | 29°C 2017 | 8°C 2002 | 16% |
| Sep 18 | 25°C | 11°C | 28°C 2017 | 7°C 1996 | 16% |
| Sep 19 | 25°C | 11°C | 28°C 2015 | 6°C 1996 | 16% |
| Sep 20 | 25°C | 11°C | 28°C 2015 | 8°C 1996 | 15% |
| Sep 21 | 25°C | 11°C | 27°C 2017 | 8°C 2018 | 15% |
| Sep 22 | 25°C | 11°C | 27°C 2020 | 7°C 1998 | 15% |
| Sep 23 | 25°C | 11°C | 27°C 2007 | 7°C 1992 | 15% |
| Sep 24 | 25°C | 11°C | 28°C 2007 | 8°C 1991 | 16% |
| Sep 25 | 25°C | 11°C | 29°C 2007 | 9°C 2000 | 16% |
| Sep 26 | 25°C | 12°C | 28°C 2013 | 8°C 1998 | 17% |
| Sep 27 | 25°C | 12°C | 28°C 2001 | 8°C 2010 | 18% |
| Sep 28 | 25°C | 12°C | 29°C 2017 | 8°C 2007 | 18% |
| Sep 29 | 25°C | 12°C | 28°C 2020 | 8°C 2007 | 19% |
| Sep 30 | 25°C | 12°C | 28°C 2020 | 8°C 1992 | 20% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+3).
- September 1
- sunrise 5:59 AM, sunset 5:44 PM
- September 30
- sunrise 5:34 AM, sunset 5:49 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.