Tarija climate

Name: Tarija
Address: BO

Tarija is warmest in October, with average highs of 23 °C, and coldest in July, when nights average 4.6 °C. January is the wettest month (229 mm) and July the driest (8.2 mm). Figures are 1991–2020 climate normals.

Across a full year Tarija averages 1,182 mm of rain, 78 days above 25 °C and 7 days below freezing.

Bolivia · population 159,269 · 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 October 23 °C
Coldest month July 4.6 °C
Driest month July 8 mm
Wettest month January 229 mm
Least cloud August 39 % cloud
Hottest on record October 36 °C
Coldest on record July -8.2 °C

What to expectTarija through the year

Tarija has a clear annual cycle: average daily highs run from 20 °C in July to 23 °C in October, a swing of 7.1 °C in mean temperature across the year.

Counted across a normal year, 78 days a year reach 25 °C, 8 of them reach 30 °C, 7 nights drop below freezing. The warmest reading in the 1991–2020 record is 36 °C, in October.

Rain is strongly seasonal. January averages 229 mm against 8 mm in July — 28 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	22.8 °C	229 mm	83 %
February	22.2 °C	206 mm	83 %
March	21.8 °C	165 mm	80 %
April	20.8 °C	73 mm	73 %
May	19.4 °C	24 mm	59 %
June	19.7 °C	9 mm	46 %
July	19.5 °C	8 mm	41 %
August	21.2 °C	14 mm	39 %
September	22.3 °C	31 mm	48 %
October	23.3 °C	87 mm	65 %
November	22.7 °C	133 mm	72 %
December	23.0 °C	202 mm	79 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	22.8 °C	14.6 °C	18.3 °C	30.6 °C	7.6 °C	6	0	0
February	22.2 °C	14.2 °C	17.7 °C	31.1 °C	5.7 °C	4	0	0
March	21.8 °C	13.7 °C	17.1 °C	30.3 °C	5.1 °C	4	0	0
April	20.8 °C	11.5 °C	15.5 °C	29.9 °C	-0.6 °C	3	0	0
May	19.4 °C	7.8 °C	12.8 °C	31.2 °C	-2.6 °C	3	0	0
June	19.7 °C	5.4 °C	11.8 °C	31.1 °C	-6.6 °C	5	0	1
July	19.5 °C	4.6 °C	11.2 °C	31.1 °C	-8.2 °C	6	0	4
August	21.2 °C	6.2 °C	12.9 °C	32.9 °C	-5.1 °C	9	1	2
September	22.3 °C	8.7 °C	14.8 °C	34.7 °C	-4.4 °C	11	2	1
October	23.3 °C	11.8 °C	17.0 °C	36.1 °C	-0.2 °C	12	2	0
November	22.7 °C	12.9 °C	17.4 °C	32.6 °C	1.1 °C	9	1	0
December	23.0 °C	14.3 °C	18.2 °C	30.8 °C	2.2 °C	8	0	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	229 mm	25	13 h/day	83 %	84 %	11 km/h
February	206 mm	22	13 h/day	83 %	86 %	11 km/h
March	165 mm	21	12 h/day	80 %	86 %	11 km/h
April	73 mm	13	12 h/day	73 %	84 %	11 km/h
May	24 mm	6	11 h/day	59 %	79 %	11 km/h
June	9 mm	3	11 h/day	46 %	68 %	11 km/h
July	8 mm	2	11 h/day	41 %	66 %	12 km/h
August	14 mm	4	11 h/day	39 %	67 %	13 km/h
September	31 mm	8	12 h/day	48 %	67 %	15 km/h
October	87 mm	17	13 h/day	65 %	74 %	14 km/h
November	133 mm	20	13 h/day	72 %	79 %	13 km/h
December	202 mm	24	13 h/day	79 %	82 %	12 km/h

How Tarija 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
Tarija	23 °C	4.6 °C	1,182 mm	78
Sucre · Bolivia	21 °C	4.6 °C	1,003 mm	9
San Salvador de Jujuy · Argentina	23 °C	6.6 °C	2,480 mm	36
Salta · Argentina	25 °C	6.4 °C	2,225 mm	82
Calama · Chile	25 °C	1.6 °C	38 mm	94
Santa Cruz de la Sierra · Bolivia	30 °C	17 °C	1,212 mm	289
Oruro · Bolivia	19 °C	-1.4 °C	601 mm	0

Where Tarija ranks

Ranking	Position	Value
Places with the best weather in South America in September	29th of 50	90/100
The coolest places in South America in March	31st of 50	22 °C
The coolest places in South America in April	35th of 50	21 °C
The coolest places in South America in February	37th of 50	22 °C
The coolest places in South America in January	46th of 50	23 °C
Places with the best weather in South America year-round	50th of 50	80/100

Planning a trip? See the best time to visit Tarija.

QuestionsCommon questions about Tarija’s climate

When is the best time to visit Tarija?

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

How hot does Tarija get?

In October, the warmest month, daily highs average 23 °C. About 8 days a year pass 30 °C. The highest value in the 1991–2020 record is 36 °C.

How cold does it get in winter?

Nights average 4.6 °C in July, the coldest month. A normal year has 7 nights below freezing.

Which month is wettest in Tarija?

January, averaging 229 mm over 25 days with rain. The driest month is July with 8 mm. The year as a whole averages 1,182 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 Tarija 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: -21.535°, -64.730° (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.