Zárate climate — normals and trends
Zárate (Argentina) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 17.3 °C and it receives 1,006 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is January (24.5 °C on average) and the coldest is July (10.4 °C). Rainfall peaks in March.
Zárate averages 4 frost days, 49 hot days (≥ 30 °C) and 89 rainy days per year.
No statistically significant temperature trend emerges for Zárate between 1940 and 2025: over this span, year-to-year swings outweigh the climate signal.
The hottest day of the period reached 42.1 °C (on 11 January 1957) and the coldest -5.6 °C (on 14 June 1967).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
ZárateBuenos Aires
- coords
- -34.10°, -59.02°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.3°C
Average daily high
22.5°C
Average daily low
12.5°C
Annual rainfall
1,006mm
Sunshine / day
9.5h
Mean relative humidity
73%
Average peak wind
17.9km/h
Seasonal range
14.1°C
Frost days (< 0 °C)
4 d/yr
Hot days (≥ 30 °C)
49 d/yr
Rainy days (≥ 1 mm)
89 d/yr
Annual snowfall
0.0 cm
Average feels-like high
22.5 °C
Average feels-like low
11.1 °C
Average peak gust
34.2 km/h
Tropical nights (≥ 20 °C)
36 d/yr
Solar radiation
17.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
No clear trend over this period
Over a short window, year-to-year swings outweigh the climate signal. Try 86 years.
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
42.1 °C
11 January 1957
Coldest day
-5.6 °C
14 June 1967
Wettest day
119 mm
27 October 2001
Windiest day
56.5 km/h
29 May 1984
Strongest gust
100.4 km/h
29 May 1984
Hottest feels-like
43.1 °C
8 January 2008
Coldest feels-like
-9.9 °C
14 June 1967
Snowiest day
1.0 cm
7 July 1960
Sunniest day
14.0 h
4 January 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 32.4 °C | +2.3 °C | 41 mm | -51 mm |
| Feb | 30.5 °C | +1.7 °C | 122 mm | +19 mm |
| Mar | 27.0 °C | +0.5 °C | 165 mm | +48 mm |
| Apr | 22.2 °C | -0.4 °C | 58 mm | -33 mm |
| May | 20.0 °C | +1.2 °C | 155 mm | +83 mm |
| Jun | 14.9 °C | -0.7 °C | 19 mm | -33 mm |
| Jul | 16.2 °C | +0.9 °C | 40 mm | -17 mm |
| Aug | 17.8 °C | +0.7 °C | 132 mm | +67 mm |
| Sep | 19.9 °C | +0.6 °C | 83 mm | +7 mm |
| Oct | 23.9 °C | +1.9 °C | 85 mm | -24 mm |
| Nov | 25.1 °C | -0.3 °C | 98 mm | +6 mm |
| Dec | 31.1 °C | +2.6 °C | 43 mm | -39 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Zárate?
Zárate has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 17.3 °C and it receives 1,006 mm of precipitation per year.
What is the hottest day ever recorded in Zárate?
The hottest day measured in Zárate between 1940 and 2025 was 11 January 1957, reaching 42.1 °C.
What is the coldest day in Zárate?
The coldest day measured in Zárate between 1940 and 2025 was 14 June 1967, at -5.6 °C.
Does it snow in Zárate?
Almost never: Zárate sees virtually no snow, with about 4 frost days per year.
Has the climate of Zárate warmed?
Between 1940 and 2025, no statistically significant temperature trend emerges in Zárate.
What is the wettest day in Zárate?
The wettest day measured in Zárate between 1940 and 2025 was 27 October 2001, with 119 mm of rain in 24 hours.
What was the windiest day in Zárate?
The windiest day measured in Zárate between 1940 and 2025 was 29 May 1984, with winds reaching 56.5 km/h.
What is the warmest month in Zárate?
The warmest month in Zárate is January (24.5 °C on average); the coldest is July (10.4 °C).
How much does it rain in Zárate?
Zárate receives on average 1,006 mm of precipitation per year, spread over about 89 rainy days.
Is it sunny in Zárate?
Zárate gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.
What is the biggest single-day snowfall in Zárate?
The heaviest 24-hour snowfall measured in Zárate between 1940 and 2025 was 7 July 1960, with 1.0 cm.
Are there tropical nights in Zárate?
Yes: Zárate has on average 36 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Zárate?
In Zárate, between 1940 and 2025, the highest apparent temperature reached 43.1 °C on 8 January 2008, and the lowest was -9.9 °C on 14 June 1967.
Compare Zárate with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Zárate