Santiago del Estero climate

Name: Santiago del Estero
Address: AR

Santiago del Estero is warmest in January, with average highs of 32 °C, and coldest in July, when nights average 9.9 °C. January is the wettest month (146 mm) and July the driest (11 mm). Figures are 1991–2020 climate normals.

Across a full year Santiago del Estero averages 828 mm of rain and 230 days above 25 °C.

Argentina · population 252,192 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month January 32 °C
Coldest month July 9.9 °C
Driest month July 11 mm
Wettest month January 146 mm
Least cloud August 28 % cloud
Hottest on record November 46 °C
Coldest on record July 0.5 °C

What to expectSantiago del Estero through the year

Santiago del Estero has a clear annual cycle: average daily highs run from 20 °C in July to 32 °C in January, a swing of 13 °C in mean temperature across the year.

Counted across a normal year, 230 days a year reach 25 °C, 126 of them reach 30 °C. The warmest reading in the 1991–2020 record is 46 °C, in November.

Rain is strongly seasonal. January averages 146 mm against 11 mm in July — 13 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	32.5 °C	146 mm	56 %
February	31.1 °C	121 mm	53 %
March	29.0 °C	122 mm	52 %
April	25.5 °C	70 mm	52 %
May	22.3 °C	23 mm	48 %
June	20.1 °C	15 mm	46 %
July	20.4 °C	11 mm	34 %
August	24.4 °C	12 mm	28 %
September	27.2 °C	27 mm	34 %
October	29.5 °C	60 mm	45 %
November	31.0 °C	89 mm	47 %
December	32.3 °C	132 mm	51 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	32.5 °C	22.9 °C	27.3 °C	42.1 °C	14.8 °C	30	23
February	31.1 °C	22.2 °C	26.2 °C	43.2 °C	14.4 °C	26	17
March	29.0 °C	20.7 °C	24.4 °C	40.2 °C	11.9 °C	26	12
April	25.5 °C	17.6 °C	21.1 °C	35.6 °C	6.2 °C	17	4
May	22.3 °C	14.2 °C	17.8 °C	33.7 °C	4.1 °C	8	1
June	20.1 °C	11.3 °C	15.2 °C	30.6 °C	2.1 °C	3	0
July	20.4 °C	9.9 °C	14.6 °C	34.7 °C	0.5 °C	5	1
August	24.4 °C	12.2 °C	17.8 °C	38.8 °C	1.6 °C	14	5
September	27.2 °C	15.0 °C	20.6 °C	41.7 °C	3.9 °C	19	9
October	29.5 °C	18.2 °C	23.4 °C	44.4 °C	7.5 °C	25	14
November	31.0 °C	20.3 °C	25.2 °C	45.9 °C	9.7 °C	27	17
December	32.3 °C	22.2 °C	26.9 °C	43.9 °C	12.7 °C	30	22

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	146 mm	12	14 h/day	56 %	64 %	16 km/h
February	121 mm	10	13 h/day	53 %	67 %	16 km/h
March	122 mm	11	12 h/day	52 %	70 %	15 km/h
April	70 mm	8	11 h/day	52 %	71 %	16 km/h
May	23 mm	5	11 h/day	48 %	70 %	15 km/h
June	15 mm	3	10 h/day	46 %	69 %	15 km/h
July	11 mm	2	11 h/day	34 %	61 %	16 km/h
August	12 mm	2	11 h/day	28 %	50 %	18 km/h
September	27 mm	3	12 h/day	34 %	47 %	19 km/h
October	60 mm	7	13 h/day	45 %	54 %	19 km/h
November	89 mm	9	13 h/day	47 %	56 %	19 km/h
December	132 mm	11	14 h/day	51 %	61 %	17 km/h

How Santiago del Estero compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Santiago del Estero	32 °C	9.9 °C	828 mm	230
San Miguel de Tucumán · Argentina	28 °C	7.1 °C	1,986 mm	154
Catamarca · Argentina	30 °C	6.0 °C	886 mm	178
La Rioja · Argentina	30 °C	6.1 °C	598 mm	158
Salta · Argentina	25 °C	6.4 °C	2,225 mm	82
Córdoba · Argentina	29 °C	5.0 °C	888 mm	145
San Salvador de Jujuy · Argentina	23 °C	6.6 °C	2,480 mm	36

Where Santiago del Estero ranks

Ranking	Position	Value
Places with the best weather in South America in May	1st of 50	97/100
Places with the best weather in the world in May	4th of 50	97/100
Places with the best weather in South America in August	5th of 50	96/100
The warmest places in South America in December	8th of 50	32 °C
The warmest places in South America in January	8th of 50	32 °C
Places with the best weather in South America in June	24th of 50	94/100

Planning a trip? See the best time to visit Santiago del Estero.

QuestionsCommon questions about Santiago del Estero’s climate

When is the best time to visit Santiago del Estero?

That depends on what you want, so the honest answer is a comparison rather than a single month. April, May, September sit closest to 20 °C on average, January is the warmest month and July the driest. The month-by-month table above has the full picture.

How hot does Santiago del Estero get?

In January, the warmest month, daily highs average 32 °C. About 126 days a year pass 30 °C. The highest value in the 1991–2020 record is 46 °C.

How cold does it get in winter?

Nights average 9.9 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Santiago del Estero?

January, averaging 146 mm over 12 days with rain. The driest month is July with 11 mm. The year as a whole averages 828 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Santiago del Estero rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: -27.800°, -64.263° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.