Tres Arroyos Weather in December
Average highs run from 26°C on December 1 to 30°C on December 31, and lows from 11°C to 14°C. Normal precipitation for the month is 78 mm over about 9 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
- 28°C
- Average low
- 13°C
- Precipitation
- 78 mm
- Reanalysis high
- 39°CDec 23, 2013
- Reanalysis low
- 5°CDec 9, 2001
- Daylight
- 14 h 38 min to 14 h 48 min
- Cloud cover
- 49%
- Humidity
- 57%
- Dew point
- 10°C
- Wind
- 18.7 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 | 26°C | 11°C | 34°C 2016 | 6°C 2014 | 31% |
| Dec 2 | 26°C | 11°C | 33°C 1995 | 6°C 2018 | 30% |
| Dec 3 | 26°C | 11°C | 36°C 1998 | 5°C 2001 | 30% |
| Dec 4 | 26°C | 11°C | 35°C 2016 | 6°C 2000 | 30% |
| Dec 5 | 26°C | 11°C | 34°C 1995 | 5°C 2020 | 30% |
| Dec 6 | 26°C | 12°C | 35°C 2000 | 5°C 2013 | 31% |
| Dec 7 | 26°C | 12°C | 35°C 2008 | 6°C 2018 | 30% |
| Dec 8 | 27°C | 12°C | 34°C 2008 | 7°C 2001 | 31% |
| Dec 9 | 27°C | 12°C | 37°C 2019 | 5°C 2001 | 31% |
| Dec 10 | 27°C | 12°C | 35°C 2020 | 7°C 2013 | 30% |
| Dec 11 | 27°C | 12°C | 36°C 2006 | 7°C 2007 | 30% |
| Dec 12 | 27°C | 12°C | 35°C 2013 | 9°C 2019 | 29% |
| Dec 13 | 27°C | 12°C | 36°C 2007 | 8°C 2019 | 29% |
| Dec 14 | 27°C | 12°C | 34°C 2008 | 8°C 2014 | 29% |
| Dec 15 | 27°C | 12°C | 37°C 2008 | 8°C 1997 | 28% |
| Dec 16 | 28°C | 13°C | 39°C 2013 | 6°C 2000 | 26% |
| Dec 17 | 28°C | 13°C | 37°C 2013 | 8°C 2018 | 27% |
| Dec 18 | 28°C | 13°C | 35°C 2019 | 6°C 2018 | 27% |
| Dec 19 | 28°C | 13°C | 37°C 2003 | 8°C 2015 | 27% |
| Dec 20 | 29°C | 13°C | 37°C 2013 | 8°C 2005 | 27% |
| Dec 21 | 29°C | 13°C | 38°C 2013 | 8°C 2019 | 27% |
| Dec 22 | 29°C | 13°C | 39°C 2013 | 6°C 2019 | 28% |
| Dec 23 | 29°C | 14°C | 39°C 2013 | 8°C 2000 | 28% |
| Dec 24 | 29°C | 14°C | 37°C 2018 | 7°C 2011 | 28% |
| Dec 25 | 29°C | 14°C | 38°C 1998 | 10°C 1991 | 28% |
| Dec 26 | 29°C | 14°C | 38°C 1998 | 8°C 1991 | 28% |
| Dec 27 | 29°C | 14°C | 38°C 2010 | 8°C 2012 | 28% |
| Dec 28 | 30°C | 14°C | 38°C 2017 | 10°C 2000 | 29% |
| Dec 29 | 30°C | 14°C | 37°C 2017 | 9°C 2012 | 30% |
| Dec 30 | 30°C | 14°C | 37°C 2016 | 10°C 2000 | 31% |
| Dec 31 | 30°C | 14°C | 38°C 2016 | 9°C 2009 | 33% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- December 1
- sunrise 5:31 AM, sunset 8:09 PM
- December 31
- sunrise 5:40 AM, sunset 8:28 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.