Castelo do Piauí Weather in December
Average highs run from 36°C on December 1 to 34°C on December 31, and lows from 23°C to 23°C. Normal precipitation for the month is 53 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
- 35°C
- Average low
- 23°C
- Precipitation
- 53 mm
- Reanalysis high
- 40°CDec 25, 2019
- Reanalysis low
- 19°CDec 21, 2000
- Daylight
- 12 h 25 min to 12 h 26 min
- Cloud cover
- 60%
- Humidity
- 54%
- Dew point
- 17°C
- Wind
- 16.6 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 | 36°C | 23°C | 39°C 2019 | 21°C 1995 | 18% |
| Dec 2 | 36°C | 23°C | 39°C 2019 | 21°C 1995 | 18% |
| Dec 3 | 36°C | 23°C | 39°C 2019 | 22°C 1994 | 19% |
| Dec 4 | 36°C | 23°C | 38°C 1997 | 21°C 1994 | 19% |
| Dec 5 | 36°C | 23°C | 39°C 2016 | 21°C 1996 | 19% |
| Dec 6 | 36°C | 23°C | 39°C 2002 | 21°C 2018 | 19% |
| Dec 7 | 36°C | 23°C | 39°C 2019 | 21°C 2006 | 21% |
| Dec 8 | 36°C | 23°C | 39°C 2016 | 21°C 1994 | 23% |
| Dec 9 | 36°C | 23°C | 39°C 1994 | 21°C 1993 | 24% |
| Dec 10 | 36°C | 23°C | 38°C 2015 | 21°C 2005 | 26% |
| Dec 11 | 36°C | 23°C | 38°C 2015 | 21°C 1991 | 26% |
| Dec 12 | 36°C | 23°C | 39°C 1993 | 21°C 2005 | 27% |
| Dec 13 | 35°C | 23°C | 39°C 1998 | 21°C 2018 | 28% |
| Dec 14 | 35°C | 23°C | 39°C 2015 | 20°C 2005 | 29% |
| Dec 15 | 35°C | 23°C | 39°C 2012 | 21°C 2010 | 29% |
| Dec 16 | 35°C | 23°C | 38°C 2015 | 20°C 2010 | 30% |
| Dec 17 | 35°C | 23°C | 38°C 1998 | 20°C 2000 | 29% |
| Dec 18 | 35°C | 23°C | 38°C 1998 | 21°C 2010 | 30% |
| Dec 19 | 35°C | 23°C | 38°C 1994 | 19°C 2010 | 29% |
| Dec 20 | 35°C | 23°C | 38°C 1993 | 21°C 2010 | 30% |
| Dec 21 | 35°C | 23°C | 38°C 2019 | 19°C 2000 | 30% |
| Dec 22 | 35°C | 23°C | 39°C 2019 | 21°C 2000 | 30% |
| Dec 23 | 35°C | 23°C | 39°C 2019 | 21°C 1999 | 29% |
| Dec 24 | 35°C | 23°C | 39°C 2019 | 20°C 1999 | 30% |
| Dec 25 | 35°C | 23°C | 40°C 2019 | 20°C 2000 | 31% |
| Dec 26 | 34°C | 23°C | 38°C 2001 | 20°C 2000 | 32% |
| Dec 27 | 34°C | 23°C | 38°C 2019 | 20°C 2018 | 34% |
| Dec 28 | 34°C | 23°C | 38°C 2019 | 21°C 2018 | 35% |
| Dec 29 | 34°C | 23°C | 38°C 2017 | 20°C 1999 | 36% |
| Dec 30 | 34°C | 23°C | 38°C 2017 | 20°C 1993 | 37% |
| Dec 31 | 34°C | 23°C | 38°C 1996 | 20°C 2009 | 39% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- December 1
- sunrise 5:23 AM, sunset 5:48 PM
- December 31
- sunrise 5:36 AM, sunset 6:02 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.