Santa Rosa de Osos Weather in December

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

Average highs run from 20°C on December 1 to 21°C on December 31, and lows from 13°C to 13°C. Normal precipitation for the month is 177 mm over about 25 wet days.

December day by day

The normal high and low for each date, and the record, in °C.

Normal low
Normal high
Record high
Record low

December at a glance

Average high: 20°C
Average low: 13°C
Precipitation: 177 mm
Record high: 34°CDec 23, 1963
Record low: 9°CDec 27, 1964
Daylight: 11 h 46 min to 11 h 44 min
Cloud cover: 72%
Humidity: 90%
Dew point: 14°C
Wind: 3.6 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	Record high	Record low	Chance wet
Dec 1	20°C	13°C	29°C 1977	14°C 1964	83%
Dec 2	20°C	13°C	33°C 1962	14°C 1975	82%
Dec 3	20°C	13°C	30°C 1958	15°C 1958	83%
Dec 4	20°C	13°C	30°C 1964	15°C 1958	82%
Dec 5	20°C	13°C	31°C 1961	13°C 1962	81%
Dec 6	20°C	13°C	32°C 1961	16°C 1962	81%
Dec 7	20°C	13°C	29°C 1965	15°C 1958	81%
Dec 8	20°C	13°C	32°C 1962	14°C 1975	81%
Dec 9	20°C	13°C	30°C 1963	14°C 1961	80%
Dec 10	20°C	13°C	31°C 1958	11°C 1964	80%
Dec 11	20°C	13°C	31°C 1976	14°C 1961	80%
Dec 12	20°C	13°C	31°C 1976	10°C 1964	79%
Dec 13	20°C	13°C	31°C 1961	12°C 1964	79%
Dec 14	20°C	13°C	30°C 1958	13°C 1964	78%
Dec 15	20°C	13°C	30°C 1958	14°C 1961	78%
Dec 16	20°C	13°C	30°C 1977	14°C 1961	76%
Dec 17	20°C	13°C	30°C 1961	13°C 1961	75%
Dec 18	20°C	13°C	29°C 1981	13°C 1961	76%
Dec 19	20°C	13°C	29°C 1962	13°C 1961	76%
Dec 20	20°C	13°C	31°C 1958	14°C 1964	76%
Dec 21	20°C	13°C	31°C 1958	12°C 1964	75%
Dec 22	20°C	13°C	31°C 1958	14°C 1968	73%
Dec 23	20°C	13°C	34°C 1963	14°C 1961	72%
Dec 24	20°C	13°C	30°C 1962	11°C 1964	70%
Dec 25	20°C	13°C	30°C 1962	14°C 1967	70%
Dec 26	21°C	13°C	34°C 1963	13°C 1968	70%
Dec 27	21°C	13°C	30°C 1961	9°C 1964	71%
Dec 28	21°C	13°C	31°C 1958	12°C 1974	70%
Dec 29	21°C	13°C	31°C 1963	16°C 1961	71%
Dec 30	21°C	13°C	30°C 1962	14°C 1964	71%
Dec 31	21°C	13°C	30°C 1958	14°C 1962	71%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT-5).

December 1: sunrise 5:58 AM, sunset 5:44 PM
December 31: sunrise 6:13 AM, sunset 5:57 PM

Every day of December: sun and moon

Other months

Sources

Records: NOAA GHCN-Daily, station COM00080110, every year on file, quality-flagged values removed. 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.