Tacna climate

Name: Tacna
Address: PE

Tacna is warmest in February, with average highs of 27 °C, and coldest in August, when nights average 13 °C. February is the wettest month (22 mm) and November the driest (1.2 mm). Figures are 1991–2020 climate normals.

Across a full year Tacna averages 82 mm of rain and 115 days above 25 °C.

Peru · population 286,240 · 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 February 27 °C
Coldest month August 13 °C
Driest month November 1 mm
Wettest month February 22 mm
Least cloud August 52 % cloud
Hottest on record February 30 °C
Coldest on record July 7.0 °C

What to expectTacna through the year

Tacna has a clear annual cycle: average daily highs run from 19 °C in August to 27 °C in February, a swing of 6.6 °C in mean temperature across the year.

Counted across a normal year, 115 days a year reach 25 °C, 0 of them reach 30 °C. The warmest reading in the 1991–2020 record is 30 °C, in February.

Rain is spread fairly evenly through the year, from 1 mm in November to 22 mm in February. There is no dry season to aim for.

Month by month

Month	Avg high	Rainfall	Cloud
January	26.4 °C	19 mm	79 %
February	27.0 °C	22 mm	79 %
March	26.5 °C	13 mm	69 %
April	24.3 °C	2 mm	56 %
May	21.6 °C	4 mm	55 %
June	19.5 °C	4 mm	57 %
July	18.8 °C	4 mm	54 %
August	19.3 °C	4 mm	52 %
September	20.4 °C	2 mm	53 %
October	21.8 °C	1 mm	60 %
November	23.5 °C	1 mm	60 %
December	25.2 °C	6 mm	73 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C
January	26.4 °C	17.9 °C	21.1 °C	29.9 °C	14.8 °C	27
February	27.0 °C	18.5 °C	21.6 °C	30.1 °C	15.8 °C	27
March	26.5 °C	17.9 °C	21.1 °C	29.8 °C	14.3 °C	28
April	24.3 °C	16.2 °C	19.2 °C	28.7 °C	12.0 °C	10
May	21.6 °C	14.8 °C	17.4 °C	27.8 °C	9.3 °C	1
June	19.5 °C	13.6 °C	15.8 °C	25.6 °C	9.5 °C	0
July	18.8 °C	12.8 °C	15.1 °C	30.0 °C	7.0 °C	0
August	19.3 °C	12.6 °C	15.1 °C	27.4 °C	7.2 °C	0
September	20.4 °C	12.9 °C	15.7 °C	25.1 °C	8.4 °C	0
October	21.8 °C	13.5 °C	16.6 °C	27.8 °C	9.4 °C	1
November	23.5 °C	14.5 °C	18.0 °C	27.5 °C	11.0 °C	3
December	25.2 °C	16.2 °C	19.6 °C	28.7 °C	11.9 °C	18

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	19 mm	5	13 h/day	79 %	74 %	16 km/h
February	22 mm	6	13 h/day	79 %	73 %	16 km/h
March	13 mm	4	12 h/day	69 %	74 %	15 km/h
April	2 mm	0	12 h/day	56 %	77 %	14 km/h
May	4 mm	0	11 h/day	55 %	82 %	12 km/h
June	4 mm	0	11 h/day	57 %	83 %	11 km/h
July	4 mm	0	11 h/day	54 %	83 %	11 km/h
August	4 mm	0	12 h/day	52 %	82 %	12 km/h
September	2 mm	0	12 h/day	53 %	82 %	13 km/h
October	1 mm	0	12 h/day	60 %	80 %	14 km/h
November	1 mm	0	13 h/day	60 %	76 %	15 km/h
December	6 mm	1	13 h/day	73 %	75 %	16 km/h

How Tacna 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
Tacna	27 °C	13 °C	82 mm	115
Arica · Chile	28 °C	13 °C	145 mm	107
Arequipa · Peru	23 °C	7.5 °C	701 mm	7
Iquique · Chile	27 °C	13 °C	61 mm	141
La Paz · Bolivia	15 °C	0.6 °C	714 mm	0
Juliaca · Peru	17 °C	-1.9 °C	987 mm	0
Oruro · Bolivia	19 °C	-1.4 °C	601 mm	0

Where Tacna ranks

Ranking	Position	Value
Places with the best weather in South America in October	5th of 50	94/100
Places with the best weather in South America year-round	5th of 50	91/100
Places with the best weather in the world year-round	6th of 50	91/100
The driest places in South America in April	6th of 50	1.9 mm
The driest places in South America in November	7th of 50	1.2 mm
Places with the best weather in South America in April	10th of 50	93/100

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

QuestionsCommon questions about Tacna’s climate

When is the best time to visit Tacna?

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

How hot does Tacna get?

In February, the warmest month, daily highs average 27 °C. About 0 days a year pass 30 °C. The highest value in the 1991–2020 record is 30 °C.

How cold does it get in winter?

Nights average 13 °C in August, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Tacna?

February, averaging 22 mm over 6 days with rain. The driest month is November with 1 mm. The year as a whole averages 82 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 Tacna 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: -18.015°, -70.254° (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.