São Mateus Weather in December
Average highs run from 30°C on December 1 to 31°C on December 31, and lows from 22°C to 22°C. Normal precipitation for the month is 158 mm over about 19 wet days.
December day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
December at a glance
- Average high
- 31°C
- Average low
- 22°C
- Precipitation
- 158 mm
- Reanalysis high
- 38°CDec 13, 2009
- Reanalysis low
- 17°CDec 5, 2005
- Daylight
- 13 h 11 min to 13 h 15 min
- Cloud cover
- 61%
- Humidity
- 80%
- Dew point
- 22°C
- Wind
- 7.6 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 |
|---|---|---|---|---|---|
| Dec 1 | 30°C | 22°C | 35°C 1993 | 20°C 1996 | 69% |
| Dec 2 | 30°C | 22°C | 36°C 2015 | 20°C 2001 | 69% |
| Dec 3 | 30°C | 22°C | 36°C 2015 | 20°C 1991 | 67% |
| Dec 4 | 30°C | 22°C | 33°C 2002 | 18°C 2005 | 66% |
| Dec 5 | 30°C | 22°C | 34°C 2015 | 17°C 2005 | 66% |
| Dec 6 | 30°C | 22°C | 35°C 2007 | 20°C 1992 | 66% |
| Dec 7 | 30°C | 22°C | 36°C 2015 | 20°C 1992 | 65% |
| Dec 8 | 30°C | 22°C | 34°C 2009 | 20°C 2005 | 64% |
| Dec 9 | 30°C | 22°C | 35°C 2015 | 18°C 1992 | 62% |
| Dec 10 | 30°C | 22°C | 38°C 2015 | 19°C 2008 | 61% |
| Dec 11 | 30°C | 22°C | 37°C 2015 | 18°C 1996 | 60% |
| Dec 12 | 30°C | 22°C | 35°C 2015 | 20°C 1994 | 60% |
| Dec 13 | 30°C | 22°C | 38°C 2009 | 19°C 1992 | 59% |
| Dec 14 | 31°C | 22°C | 34°C 2015 | 19°C 1992 | 57% |
| Dec 15 | 31°C | 22°C | 34°C 1994 | 19°C 1992 | 56% |
| Dec 16 | 31°C | 22°C | 35°C 2015 | 20°C 2020 | 54% |
| Dec 17 | 31°C | 22°C | 35°C 2012 | 20°C 2006 | 54% |
| Dec 18 | 31°C | 22°C | 37°C 2012 | 20°C 2018 | 55% |
| Dec 19 | 31°C | 22°C | 34°C 2012 | 20°C 2008 | 55% |
| Dec 20 | 31°C | 22°C | 34°C 2015 | 21°C 2010 | 54% |
| Dec 21 | 31°C | 22°C | 35°C 2002 | 20°C 2005 | 53% |
| Dec 22 | 31°C | 22°C | 36°C 2003 | 20°C 2005 | 53% |
| Dec 23 | 31°C | 22°C | 34°C 2010 | 19°C 2006 | 54% |
| Dec 24 | 31°C | 22°C | 35°C 2002 | 20°C 1992 | 54% |
| Dec 25 | 31°C | 22°C | 36°C 2002 | 20°C 2011 | 53% |
| Dec 26 | 31°C | 22°C | 35°C 2012 | 20°C 2011 | 53% |
| Dec 27 | 31°C | 22°C | 35°C 2015 | 20°C 2014 | 52% |
| Dec 28 | 31°C | 22°C | 36°C 2015 | 20°C 1999 | 51% |
| Dec 29 | 31°C | 22°C | 37°C 2014 | 21°C 1999 | 51% |
| Dec 30 | 31°C | 22°C | 36°C 2014 | 21°C 1992 | 51% |
| Dec 31 | 31°C | 22°C | 36°C 2015 | 20°C 1992 | 50% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- December 1
- sunrise 4:53 AM, sunset 6:04 PM
- December 31
- sunrise 5:05 AM, sunset 6:20 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.