San Isidro Weather in December
Average highs run from 24°C on December 1 to 22°C on December 31, and lows from 17°C to 16°C. Normal precipitation for the month is 32 mm over about 6 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
- 23°C
- Average low
- 16°C
- Precipitation
- 32 mm
- Record high
- 30°CDec 2, 1985
- Record low
- 10°CDec 2, 1988
- Daylight
- 10 h 30 min to 10 h 24 min
- Cloud cover
- 58%
- Humidity
- 75%
- Dew point
- 14°C
- Wind
- 20.5 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 | 24°C | 17°C | 28°C 1997 | 12°C 1999 | 22% |
| Dec 2 | 24°C | 17°C | 30°C 1985 | 10°C 1988 | 22% |
| Dec 3 | 23°C | 17°C | 28°C 1985 | 15°C 2003 | 22% |
| Dec 4 | 24°C | 17°C | 28°C 2015 | 15°C 2003 | 22% |
| Dec 5 | 24°C | 17°C | 28°C 2018 | 15°C 1992 | 22% |
| Dec 6 | 24°C | 17°C | 30°C 2018 | 14°C 1996 | 21% |
| Dec 7 | 23°C | 17°C | 27°C 2018 | 13°C 1996 | 20% |
| Dec 8 | 23°C | 17°C | 28°C 1988 | 14°C 1997 | 20% |
| Dec 9 | 23°C | 17°C | 29°C 2023 | 14°C 2018 | 20% |
| Dec 10 | 23°C | 17°C | 27°C 2023 | 14°C 2006 | 20% |
| Dec 11 | 23°C | 16°C | 28°C 2000 | 14°C 2024 | 21% |
| Dec 12 | 24°C | 17°C | 28°C 2005 | 14°C 2012 | 21% |
| Dec 13 | 24°C | 16°C | 27°C 2022 | 14°C 1992 | 21% |
| Dec 14 | 23°C | 16°C | 27°C 2022 | 12°C 1986 | 22% |
| Dec 15 | 23°C | 16°C | 27°C 2015 | 13°C 2014 | 22% |
| Dec 16 | 23°C | 17°C | 29°C 2015 | 14°C 2021 | 23% |
| Dec 17 | 23°C | 17°C | 27°C 1987 | 12°C 2021 | 23% |
| Dec 18 | 23°C | 16°C | 27°C 1996 | 11°C 2021 | 23% |
| Dec 19 | 23°C | 16°C | 27°C 2015 | 13°C 2012 | 21% |
| Dec 20 | 23°C | 16°C | 28°C 1989 | 13°C 1990 | 21% |
| Dec 21 | 23°C | 16°C | 29°C 2002 | 13°C 1990 | 20% |
| Dec 22 | 23°C | 17°C | 28°C 2002 | 14°C 2025 | 22% |
| Dec 23 | 23°C | 17°C | 28°C 2012 | 12°C 2024 | 22% |
| Dec 24 | 23°C | 16°C | 29°C 2019 | 13°C 2008 | 20% |
| Dec 25 | 23°C | 16°C | 29°C 2019 | 13°C 2013 | 20% |
| Dec 26 | 23°C | 16°C | 27°C 2019 | 13°C 2008 | 19% |
| Dec 27 | 23°C | 16°C | 28°C 2019 | 13°C 2023 | 18% |
| Dec 28 | 23°C | 16°C | 27°C 2019 | 11°C 2014 | 16% |
| Dec 29 | 23°C | 16°C | 27°C 2019 | 14°C 1999 | 15% |
| Dec 30 | 23°C | 16°C | 28°C 2021 | 13°C 1992 | 15% |
| Dec 31 | 22°C | 16°C | 27°C 2021 | 13°C 1998 | 14% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+0).
- December 1
- sunrise 7:40 AM, sunset 6:10 PM
- December 31
- sunrise 7:57 AM, sunset 6:21 PM
Other months
Sources
Records: NOAA GHCN-Daily, station SPE00120476, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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.