Juliaca climate

Name: Juliaca
Address: PE

Juliaca is warmest in November, with average highs of 17 °C, and coldest in June, when nights average -1.9 °C. January is the wettest month (194 mm) and July the driest (7.1 mm). Figures are 1991–2020 climate normals.

Across a full year Juliaca averages 987 mm of rain and 101 days below freezing.

Peru · population 245,675 · 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 November 17 °C
Coldest month June -1.9 °C
Driest month July 7 mm
Wettest month January 194 mm
Least cloud July 28 % cloud
Hottest on record December 23 °C
Coldest on record July -7.7 °C

What to expectJuliaca through the year

Juliaca has a clear annual cycle: average daily highs run from 14 °C in June to 17 °C in November, a swing of 3.7 °C in mean temperature across the year.

Counted across a normal year, 101 nights drop below freezing. The warmest reading in the 1991–2020 record is 23 °C, in December.

Rain is strongly seasonal. January averages 194 mm against 7 mm in July — 27 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	13.8 °C	194 mm	89 %
February	13.9 °C	180 mm	88 %
March	13.8 °C	145 mm	83 %
April	13.8 °C	75 mm	67 %
May	14.2 °C	22 mm	41 %
June	14.3 °C	7 mm	31 %
July	14.6 °C	7 mm	28 %
August	15.4 °C	18 mm	32 %
September	16.0 °C	46 mm	46 %
October	16.0 °C	77 mm	65 %
November	16.5 °C	77 mm	75 %
December	15.1 °C	138 mm	86 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days below 0 °C
January	13.8 °C	5.0 °C	9.1 °C	17.9 °C	0.4 °C	0
February	13.9 °C	5.0 °C	9.1 °C	18.8 °C	-0.8 °C	0
March	13.8 °C	4.6 °C	8.9 °C	19.7 °C	-2.3 °C	0
April	13.8 °C	2.7 °C	8.0 °C	18.1 °C	-3.9 °C	3
May	14.2 °C	-0.4 °C	7.0 °C	19.4 °C	-7.5 °C	16
June	14.3 °C	-1.9 °C	6.5 °C	18.7 °C	-7.5 °C	25
July	14.6 °C	-1.8 °C	6.6 °C	18.2 °C	-7.7 °C	26
August	15.4 °C	-0.6 °C	7.7 °C	20.4 °C	-7.6 °C	18
September	16.0 °C	1.2 °C	8.7 °C	21.1 °C	-6.7 °C	8
October	16.0 °C	2.8 °C	9.4 °C	21.8 °C	-4.0 °C	3
November	16.5 °C	3.8 °C	10.2 °C	22.2 °C	-3.6 °C	2
December	15.1 °C	4.8 °C	9.7 °C	22.9 °C	-1.9 °C	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	194 mm	26	13 h/day	89 %	74 %	12 km/h
February	180 mm	24	13 h/day	88 %	76 %	12 km/h
March	145 mm	24	12 h/day	83 %	76 %	11 km/h
April	75 mm	15	12 h/day	67 %	72 %	11 km/h
May	22 mm	5	11 h/day	41 %	59 %	12 km/h
June	7 mm	2	11 h/day	31 %	48 %	13 km/h
July	7 mm	2	11 h/day	28 %	45 %	15 km/h
August	18 mm	5	12 h/day	32 %	47 %	16 km/h
September	46 mm	10	12 h/day	46 %	52 %	16 km/h
October	77 mm	14	12 h/day	65 %	56 %	15 km/h
November	77 mm	14	13 h/day	75 %	55 %	15 km/h
December	138 mm	22	13 h/day	86 %	66 %	13 km/h

How Juliaca 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
Juliaca	17 °C	-1.9 °C	987 mm	0
Arequipa · Peru	23 °C	7.5 °C	701 mm	7
La Paz · Bolivia	15 °C	0.6 °C	714 mm	0
Tacna · Peru	27 °C	13 °C	82 mm	115
Cusco · Peru	17 °C	4.6 °C	1,190 mm	0
Arica · Chile	28 °C	13 °C	145 mm	107
Oruro · Bolivia	19 °C	-1.4 °C	601 mm	0

Where Juliaca ranks

Ranking	Position	Value
The coolest places in South America in February	2nd of 50	14 °C
The coolest places in South America in January	2nd of 50	14 °C
The coolest places in South America in March	2nd of 50	14 °C
The coolest places in South America in April	3rd of 50	14 °C
The coolest places in South America in December	3rd of 50	15 °C
The coolest places in South America year-round	4th of 50	15 °C

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

QuestionsCommon questions about Juliaca’s climate

When is the best time to visit Juliaca?

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

How hot does Juliaca get?

In November, the warmest month, daily highs average 17 °C. The highest value in the 1991–2020 record is 23 °C.

How cold does it get in winter?

Nights average -1.9 °C in June, the coldest month. A normal year has 101 nights below freezing.

Which month is wettest in Juliaca?

January, averaging 194 mm over 26 days with rain. The driest month is July with 7 mm. The year as a whole averages 987 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 Juliaca 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: -15.500°, -70.133° (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.