Bahía Blanca Weather in December
Average highs run from 28°C on December 1 to 32°C on December 31, and lows from 13°C to 16°C. Normal precipitation for the month is 65 mm over about 7 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
- 30°C
- Average low
- 14°C
- Precipitation
- 65 mm
- Record high
- 42°CDec 25, 1971
- Record low
- 2°CDec 3, 1956
- Daylight
- 14 h 40 min to 14 h 50 min
- Cloud cover
- 47%
- Humidity
- 47%
- Dew point
- 8°C
- Wind
- 19.8 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 | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | 28°C | 13°C | 37°C 1975 | 3°C 1983 | 24% |
| Dec 2 | 28°C | 13°C | 37°C 1977 | 3°C 2018 | 23% |
| Dec 3 | 29°C | 13°C | 36°C 1998 | 2°C 1956 | 23% |
| Dec 4 | 29°C | 13°C | 36°C 1974 | 5°C 1971 | 23% |
| Dec 5 | 29°C | 13°C | 37°C 1974 | 4°C 1971 | 23% |
| Dec 6 | 29°C | 13°C | 39°C 2000 | 4°C 2015 | 23% |
| Dec 7 | 29°C | 13°C | 39°C 1960 | 4°C 1977 | 23% |
| Dec 8 | 29°C | 13°C | 39°C 1983 | 3°C 2024 | 24% |
| Dec 9 | 29°C | 13°C | 39°C 1982 | 6°C 2003 | 24% |
| Dec 10 | 29°C | 14°C | 39°C 2019 | 4°C 2005 | 23% |
| Dec 11 | 29°C | 14°C | 37°C 1978 | 6°C 2007 | 23% |
| Dec 12 | 30°C | 14°C | 37°C 1978 | 6°C 2010 | 23% |
| Dec 13 | 30°C | 14°C | 41°C 1961 | 5°C 1964 | 23% |
| Dec 14 | 30°C | 14°C | 38°C 2007 | 4°C 1958 | 23% |
| Dec 15 | 30°C | 14°C | 38°C 2013 | 6°C 1979 | 22% |
| Dec 16 | 30°C | 14°C | 38°C 2008 | 6°C 1997 | 21% |
| Dec 17 | 30°C | 14°C | 41°C 2013 | 4°C 1964 | 22% |
| Dec 18 | 31°C | 14°C | 39°C 1959 | 5°C 2018 | 22% |
| Dec 19 | 31°C | 15°C | 40°C 1962 | 5°C 1980 | 22% |
| Dec 20 | 31°C | 15°C | 41°C 1973 | 5°C 1987 | 22% |
| Dec 21 | 31°C | 15°C | 39°C 2016 | 4°C 2019 | 22% |
| Dec 22 | 31°C | 15°C | 40°C 1986 | 4°C 1998 | 23% |
| Dec 23 | 32°C | 15°C | 40°C 2013 | 6°C 1960 | 22% |
| Dec 24 | 32°C | 15°C | 42°C 1970 | 6°C 2011 | 22% |
| Dec 25 | 32°C | 16°C | 42°C 1971 | 4°C 1960 | 23% |
| Dec 26 | 32°C | 16°C | 39°C 1982 | 9°C 2012 | 24% |
| Dec 27 | 32°C | 16°C | 40°C 1959 | 7°C 1962 | 25% |
| Dec 28 | 32°C | 16°C | 39°C 2011 | 5°C 1964 | 25% |
| Dec 29 | 32°C | 16°C | 40°C 1975 | 7°C 1977 | 26% |
| Dec 30 | 32°C | 16°C | 39°C 1975 | 9°C 2023 | 26% |
| Dec 31 | 32°C | 16°C | 40°C 1969 | 5°C 1979 | 26% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- December 1
- sunrise 5:38 AM, sunset 8:18 PM
- December 31
- sunrise 5:47 AM, sunset 8:37 PM
Other months
Sources
Records: NOAA GHCN-Daily, station AR000877500, 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 2026-09-26. Sun and moon: computed with the NOAA solar equations and Meeus.