Lanús Weather in January

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

Average highs run from 31°C on January 1 to 31°C on January 31, and lows from 18°C to 18°C. Normal precipitation for the month is 109 mm over about 9 wet days.

January day by day

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

Normal low
Normal high
Reanalysis extreme high
Reanalysis extreme low

January at a glance

Average high: 31°C
Average low: 18°C
Precipitation: 109 mm
Reanalysis high: 42°CJan 10, 2012
Reanalysis low: 9°CJan 15, 1992
Daylight: 14 h 26 min to 13 h 48 min
Cloud cover: 47%
Humidity: 63%
Dew point: 16°C
Wind: 14.4 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
Jan 1	31°C	18°C	39°C 1995	10°C 2013	34%
Jan 2	31°C	18°C	38°C 2012	11°C 2013	33%
Jan 3	31°C	18°C	40°C 1996	12°C 2015	34%
Jan 4	31°C	18°C	39°C 2018	11°C 2014	34%
Jan 5	31°C	18°C	39°C 2005	13°C 1999	34%
Jan 6	31°C	18°C	40°C 2012	12°C 1999	34%
Jan 7	31°C	18°C	41°C 2005	12°C 1998	33%
Jan 8	31°C	18°C	40°C 2008	12°C 1998	34%
Jan 9	31°C	18°C	41°C 2012	11°C 1994	33%
Jan 10	31°C	18°C	42°C 2012	10°C 1999	34%
Jan 11	31°C	18°C	39°C 2018	11°C 2001	34%
Jan 12	31°C	18°C	39°C 2005	12°C 2001	34%
Jan 13	31°C	18°C	37°C 1993	12°C 2010	34%
Jan 14	31°C	18°C	38°C 2005	12°C 1999	34%
Jan 15	31°C	18°C	37°C 1995	9°C 1992	33%
Jan 16	31°C	18°C	38°C 2014	11°C 1992	32%
Jan 17	31°C	18°C	39°C 2014	12°C 1993	33%
Jan 18	31°C	18°C	40°C 2014	12°C 1998	32%
Jan 19	31°C	18°C	37°C 1994	13°C 1998	32%
Jan 20	31°C	18°C	38°C 2000	13°C 2005	31%
Jan 21	31°C	18°C	37°C 2012	13°C 1994	31%
Jan 22	31°C	18°C	40°C 2016	14°C 1994	31%
Jan 23	32°C	18°C	37°C 2009	12°C 2003	32%
Jan 24	31°C	18°C	39°C 2016	12°C 2003	33%
Jan 25	31°C	18°C	37°C 2011	11°C 2014	34%
Jan 26	31°C	18°C	38°C 2004	11°C 2017	35%
Jan 27	31°C	18°C	38°C 2004	15°C 2020	35%
Jan 28	31°C	18°C	38°C 2013	14°C 1998	36%
Jan 29	31°C	18°C	37°C 2012	13°C 2015	37%
Jan 30	31°C	18°C	39°C 2003	12°C 2020	38%
Jan 31	31°C	18°C	40°C 2003	12°C 2005	39%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT-3).

January 1: sunrise 5:44 AM, sunset 8:10 PM
January 31: sunrise 6:13 AM, sunset 8:01 PM

Every day of January: 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.