Yby Yaú Weather in December
Average highs run from 31°C on December 1 to 32°C on December 31, and lows from 21°C to 22°C. Normal precipitation for the month is 174 mm over about 16 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
- 32°C
- Average low
- 22°C
- Precipitation
- 174 mm
- Reanalysis high
- 40°CDec 29, 2008
- Reanalysis low
- 11°CDec 14, 2010
- Daylight
- 13 h 27 min to 13 h 32 min
- Cloud cover
- 65%
- Humidity
- 75%
- Dew point
- 21°C
- Wind
- 4.0 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 | 31°C | 21°C | 38°C 1999 | 12°C 2001 | 55% |
| Dec 2 | 31°C | 21°C | 38°C 2020 | 13°C 2001 | 56% |
| Dec 3 | 31°C | 21°C | 39°C 2007 | 15°C 2011 | 56% |
| Dec 4 | 31°C | 21°C | 38°C 1999 | 15°C 2008 | 55% |
| Dec 5 | 31°C | 21°C | 38°C 1991 | 15°C 2008 | 56% |
| Dec 6 | 31°C | 21°C | 35°C 2008 | 16°C 2000 | 56% |
| Dec 7 | 31°C | 21°C | 38°C 2008 | 14°C 2019 | 54% |
| Dec 8 | 31°C | 21°C | 38°C 2008 | 16°C 2018 | 54% |
| Dec 9 | 31°C | 21°C | 37°C 2008 | 16°C 2018 | 53% |
| Dec 10 | 31°C | 21°C | 38°C 2020 | 16°C 2003 | 54% |
| Dec 11 | 31°C | 21°C | 38°C 2020 | 16°C 1998 | 53% |
| Dec 12 | 31°C | 21°C | 38°C 2020 | 17°C 1998 | 51% |
| Dec 13 | 31°C | 22°C | 36°C 2020 | 14°C 2010 | 50% |
| Dec 14 | 32°C | 22°C | 37°C 1994 | 11°C 2010 | 51% |
| Dec 15 | 32°C | 22°C | 38°C 1994 | 14°C 2010 | 52% |
| Dec 16 | 32°C | 22°C | 38°C 2017 | 16°C 2000 | 51% |
| Dec 17 | 32°C | 22°C | 37°C 2017 | 12°C 2000 | 50% |
| Dec 18 | 32°C | 22°C | 38°C 1999 | 14°C 2000 | 49% |
| Dec 19 | 32°C | 22°C | 38°C 1994 | 16°C 1998 | 49% |
| Dec 20 | 32°C | 22°C | 38°C 2011 | 18°C 1998 | 48% |
| Dec 21 | 32°C | 22°C | 39°C 1999 | 19°C 2007 | 49% |
| Dec 22 | 32°C | 22°C | 38°C 2011 | 17°C 1998 | 52% |
| Dec 23 | 32°C | 22°C | 40°C 2011 | 15°C 1998 | 54% |
| Dec 24 | 32°C | 22°C | 38°C 2020 | 14°C 1998 | 56% |
| Dec 25 | 32°C | 22°C | 37°C 1994 | 18°C 2004 | 56% |
| Dec 26 | 32°C | 22°C | 37°C 1994 | 20°C 2002 | 58% |
| Dec 27 | 32°C | 22°C | 39°C 2020 | 18°C 2004 | 60% |
| Dec 28 | 32°C | 22°C | 39°C 2002 | 16°C 2004 | 60% |
| Dec 29 | 32°C | 22°C | 40°C 2008 | 18°C 2004 | 59% |
| Dec 30 | 32°C | 22°C | 39°C 2008 | 17°C 1993 | 58% |
| Dec 31 | 32°C | 22°C | 37°C 2008 | 16°C 1993 | 59% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- December 1
- sunrise 5:52 AM, sunset 7:19 PM
- December 31
- sunrise 6:03 AM, sunset 7:35 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.