San Ignacio Weather in December

NASA POWER reanalysis for the half-degree grid cell around San Ignacio, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 26°C on December 1 to 26°C on December 31, and lows from 19°C to 18°C. Normal precipitation for the month is 130 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: 26°C
Average low: 19°C
Precipitation: 130 mm
Reanalysis high: 32°CDec 2, 2009
Reanalysis low: 10°CDec 15, 2010
Daylight: 11 h 11 min to 11 h 07 min
Cloud cover: 55%
Humidity: 89%
Dew point: 20°C
Wind: 5.8 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	19°C	29°C 1994	11°C 2011	56%
Dec 2	26°C	19°C	32°C 2009	14°C 2011	58%
Dec 3	26°C	19°C	30°C 2009	16°C 2011	59%
Dec 4	26°C	19°C	30°C 2009	15°C 2010	60%
Dec 5	26°C	19°C	29°C 2016	15°C 2010	60%
Dec 6	26°C	19°C	29°C 2016	15°C 2000	60%
Dec 7	26°C	19°C	29°C 1994	14°C 2003	60%
Dec 8	26°C	19°C	29°C 2009	13°C 2003	60%
Dec 9	26°C	19°C	30°C 2009	15°C 2017	58%
Dec 10	26°C	19°C	31°C 2009	12°C 2017	57%
Dec 11	26°C	19°C	30°C 2012	12°C 2017	56%
Dec 12	26°C	19°C	29°C 2009	12°C 2017	55%
Dec 13	26°C	19°C	29°C 2009	12°C 2017	55%
Dec 14	26°C	19°C	29°C 2015	11°C 2010	56%
Dec 15	26°C	19°C	29°C 1992	10°C 2010	55%
Dec 16	26°C	19°C	29°C 1992	13°C 1997	55%
Dec 17	26°C	19°C	29°C 1992	13°C 1997	55%
Dec 18	26°C	19°C	29°C 2012	13°C 1998	54%
Dec 19	25°C	19°C	28°C 1994	13°C 2003	54%
Dec 20	25°C	18°C	30°C 1994	12°C 2003	53%
Dec 21	25°C	18°C	30°C 1994	14°C 2003	53%
Dec 22	25°C	18°C	29°C 1994	12°C 2018	53%
Dec 23	25°C	18°C	29°C 2004	15°C 2003	53%
Dec 24	25°C	19°C	30°C 2009	15°C 2019	55%
Dec 25	26°C	19°C	29°C 1997	13°C 2019	56%
Dec 26	26°C	19°C	30°C 2012	13°C 2020	57%
Dec 27	26°C	19°C	29°C 2009	11°C 2006	58%
Dec 28	26°C	19°C	29°C 2012	13°C 2006	58%
Dec 29	26°C	19°C	29°C 2012	15°C 1997	57%
Dec 30	26°C	19°C	29°C 2019	12°C 1997	57%
Dec 31	26°C	18°C	28°C 2010	13°C 1997	56%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (CST).

December 1: sunrise 6:10 AM, sunset 5:21 PM
December 31: sunrise 6:26 AM, sunset 5:33 PM

Every day of December: sun and moon

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.