Rio Branco Weather in October
Average highs run from 34°C on October 1 to 32°C on October 31, and lows from 23°C to 23°C. Normal precipitation for the month is 140 mm over about 19 wet days.
October day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
October at a glance
- Average high
- 33°C
- Average low
- 23°C
- Precipitation
- 140 mm
- Reanalysis high
- 40°COct 7, 1995
- Reanalysis low
- 17°COct 4, 1999
- Daylight
- 12 h 12 min to 12 h 28 min
- Cloud cover
- 77%
- Humidity
- 73%
- Dew point
- 22°C
- Wind
- 2.5 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 |
|---|---|---|---|---|---|
| Oct 1 | 34°C | 23°C | 40°C 2005 | 18°C 2009 | 50% |
| Oct 2 | 34°C | 23°C | 39°C 1998 | 21°C 2009 | 50% |
| Oct 3 | 34°C | 23°C | 40°C 2005 | 18°C 2010 | 51% |
| Oct 4 | 34°C | 23°C | 38°C 1993 | 17°C 1999 | 51% |
| Oct 5 | 34°C | 23°C | 39°C 1995 | 17°C 1999 | 51% |
| Oct 6 | 34°C | 23°C | 40°C 2015 | 18°C 1999 | 53% |
| Oct 7 | 34°C | 23°C | 40°C 1995 | 20°C 1999 | 54% |
| Oct 8 | 34°C | 23°C | 38°C 2017 | 19°C 1993 | 56% |
| Oct 9 | 34°C | 23°C | 38°C 2001 | 19°C 1991 | 57% |
| Oct 10 | 34°C | 23°C | 39°C 2020 | 21°C 1991 | 58% |
| Oct 11 | 34°C | 23°C | 39°C 1998 | 20°C 2003 | 58% |
| Oct 12 | 34°C | 23°C | 39°C 1998 | 18°C 2012 | 57% |
| Oct 13 | 34°C | 23°C | 38°C 2020 | 20°C 2003 | 58% |
| Oct 14 | 34°C | 23°C | 39°C 2015 | 20°C 2003 | 58% |
| Oct 15 | 34°C | 23°C | 37°C 2015 | 19°C 2003 | 59% |
| Oct 16 | 34°C | 23°C | 38°C 2017 | 20°C 2003 | 60% |
| Oct 17 | 34°C | 23°C | 39°C 2017 | 22°C 2000 | 62% |
| Oct 18 | 33°C | 23°C | 39°C 2015 | 21°C 2014 | 62% |
| Oct 19 | 33°C | 23°C | 39°C 2018 | 21°C 1991 | 64% |
| Oct 20 | 33°C | 23°C | 38°C 2016 | 21°C 2005 | 65% |
| Oct 21 | 33°C | 23°C | 40°C 2015 | 22°C 2005 | 65% |
| Oct 22 | 33°C | 23°C | 40°C 2015 | 22°C 2019 | 65% |
| Oct 23 | 33°C | 23°C | 40°C 2015 | 21°C 2004 | 65% |
| Oct 24 | 33°C | 23°C | 39°C 2015 | 22°C 1996 | 67% |
| Oct 25 | 33°C | 23°C | 38°C 2015 | 22°C 1994 | 68% |
| Oct 26 | 32°C | 23°C | 39°C 1997 | 22°C 2004 | 69% |
| Oct 27 | 32°C | 23°C | 38°C 1997 | 22°C 1991 | 70% |
| Oct 28 | 32°C | 23°C | 38°C 2015 | 21°C 2016 | 69% |
| Oct 29 | 32°C | 23°C | 39°C 1997 | 20°C 2016 | 70% |
| Oct 30 | 32°C | 23°C | 37°C 2015 | 21°C 1993 | 70% |
| Oct 31 | 32°C | 23°C | 38°C 2019 | 21°C 1993 | 71% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-5).
- October 1
- sunrise 5:15 AM, sunset 5:27 PM
- October 31
- sunrise 5:01 AM, sunset 5:29 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.