La Plata climate

Name: La Plata
Address: AR

La Plata is warmest in January, with average highs of 28 °C, and coldest in July, when nights average 7.4 °C. October is the wettest month (106 mm) and May the driest (63 mm). Figures are 1991–2020 climate normals.

Across a full year La Plata averages 974 mm of rain, 91 days above 25 °C and 0 days below freezing.

Argentina · population 195,443 · 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 28 °C
Coldest month July 7.4 °C
Driest month May 63 mm
Wettest month October 106 mm
Least cloud January 39 % cloud
Hottest on record December 37 °C
Coldest on record June -1.4 °C
Warmest sea January 25 °C

What to expectLa Plata through the year

La Plata has a clear annual cycle: average daily highs run from 13 °C in July to 28 °C in January, a swing of 13 °C in mean temperature across the year.

Counted across a normal year, 91 days a year reach 25 °C, 14 of them reach 30 °C, 0 nights drop below freezing. The warmest reading in the 1991–2020 record is 37 °C, in December.

Rain is spread fairly evenly through the year, from 63 mm in May to 106 mm in October. There is no dry season to aim for.

The sea off La Plata is warmest in January at 25 °C and coldest in July at 12 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	27.5 °C	92 mm	39 %
February	26.4 °C	87 mm	42 %
March	24.4 °C	88 mm	43 %
April	20.9 °C	88 mm	48 %
May	17.2 °C	63 mm	55 %
June	14.2 °C	65 mm	56 %
July	13.3 °C	68 mm	55 %
August	15.4 °C	69 mm	53 %
September	17.1 °C	72 mm	52 %
October	19.9 °C	106 mm	53 %
November	23.2 °C	93 mm	46 %
December	26.2 °C	83 mm	41 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	27.5 °C	20.1 °C	23.5 °C	35.9 °C	11.0 °C	25	6
February	26.4 °C	19.5 °C	22.7 °C	34.1 °C	10.6 °C	19	3
March	24.4 °C	17.9 °C	20.9 °C	31.8 °C	8.6 °C	13	1
April	20.9 °C	14.5 °C	17.4 °C	30.5 °C	4.9 °C	2	0
May	17.2 °C	11.4 °C	14.1 °C	26.1 °C	1.2 °C	0	0
June	14.2 °C	8.5 °C	11.1 °C	22.5 °C	-1.4 °C	0	0
July	13.3 °C	7.4 °C	10.1 °C	22.9 °C	-1.1 °C	0	0
August	15.4 °C	8.7 °C	11.8 °C	27.1 °C	-0.4 °C	0	0
September	17.1 °C	10.2 °C	13.4 °C	27.8 °C	1.8 °C	0	0
October	19.9 °C	13.0 °C	16.3 °C	30.1 °C	2.4 °C	2	0
November	23.2 °C	15.7 °C	19.3 °C	33.0 °C	5.2 °C	9	1
December	26.2 °C	18.3 °C	22.1 °C	36.8 °C	8.8 °C	20	4

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	92 mm	8	14 h/day	39 %	68 %	21 km/h	24.8 °C
February	87 mm	8	13 h/day	42 %	71 %	20 km/h	24.6 °C
March	88 mm	8	12 h/day	43 %	74 %	19 km/h	23.1 °C
April	88 mm	7	11 h/day	48 %	76 %	19 km/h	20.0 °C
May	63 mm	6	10 h/day	55 %	79 %	19 km/h	16.7 °C
June	65 mm	6	9.8 h/day	56 %	79 %	20 km/h	13.4 °C
July	68 mm	6	10 h/day	55 %	79 %	20 km/h	12.0 °C
August	69 mm	6	11 h/day	53 %	77 %	20 km/h	12.8 °C
September	72 mm	7	12 h/day	52 %	74 %	21 km/h	14.5 °C
October	106 mm	9	13 h/day	53 %	74 %	22 km/h	17.7 °C
November	93 mm	8	14 h/day	46 %	70 %	22 km/h	20.6 °C
December	83 mm	8	14 h/day	41 %	67 %	21 km/h	23.1 °C

How La Plata 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
La Plata	28 °C	7.4 °C	974 mm	91
Avellaneda · Argentina	28 °C	7.2 °C	1,002 mm	101
Buenos Aires · Argentina	28 °C	7.6 °C	1,070 mm	96
Merlo · Argentina	29 °C	6.2 °C	979 mm	119

Where La Plata ranks

Ranking	Position	Value
The coolest places in South America in July	13thof 50	13 °C
The coolest places in South America in June	15thof 50	14 °C
The coolest places in South America in September	17thof 50	17 °C
The coolest places in South America in August	18thof 50	15 °C
The coolest places in South America in May	23rdof 50	17 °C
The coolest places in the world in July	26thof 50	13 °C

Planning a trip? See the best time to visit La Plata.

QuestionsCommon questions about La Plata’s climate

When is the best time to visit La Plata?

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

How hot does La Plata get?

In January, the warmest month, daily highs average 28 °C. About 14 days a year pass 30 °C. The highest value in the 1991–2020 record is 37 °C.

How cold does it get in winter?

Nights average 7.4 °C in July, the coldest month. A normal year has 0 nights below freezing.

Which month is wettest in La Plata?

October, averaging 106 mm over 9 days with rain. The driest month is May with 63 mm. The year as a whole averages 974 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 La Plata 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
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.