Olavarría climate — normals and trends
Olavarría (Argentina) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 14.3 °C and it receives 819 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 (21.8 °C on average) and the coldest is July (7.2 °C). Rainfall peaks in November.
Olavarría averages 20 frost days, 26 hot days (≥ 30 °C) and 90 rainy days per year.
No statistically significant temperature trend emerges for Olavarría between 1940 and 2025: over this span, year-to-year swings outweigh the climate signal.
The hottest day of the period reached 39.3 °C (on 18 January 2014) and the coldest -8.9 °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
OlavarríaBuenos Aires
- coords
- -36.89°, -60.32°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.3°C
Average daily high
20.0°C
Average daily low
9.2°C
Annual rainfall
819mm
Sunshine / day
9.5h
Mean relative humidity
72%
Average peak wind
20.4km/h
Seasonal range
14.6°C
Frost days (< 0 °C)
20 d/yr
Hot days (≥ 30 °C)
26 d/yr
Rainy days (≥ 1 mm)
90 d/yr
Annual snowfall
0.2 cm
Average feels-like high
18.6 °C
Average feels-like low
6.7 °C
Average peak gust
38.3 km/h
Tropical nights (≥ 20 °C)
6 d/yr
Solar radiation
17.0 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
39.3 °C
18 January 2014
Coldest day
-8.9 °C
14 June 1967
Wettest day
130 mm
5 January 2021
Windiest day
58.7 km/h
19 February 1997
Strongest gust
99.4 km/h
1 January 1945
Hottest feels-like
40.5 °C
1 February 1947
Coldest feels-like
-13.5 °C
14 June 1967
Snowiest day
4.8 cm
22 July 2009
Sunniest day
14.0 h
12 December 2025
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 | 29.6 °C | +1.5 °C | 23 mm | -66 mm |
| Feb | 29.0 °C | +2.0 °C | 75 mm | -2 mm |
| Mar | 23.6 °C | -0.6 °C | 102 mm | +16 mm |
| Apr | 19.2 °C | -0.8 °C | 54 mm | -17 mm |
| May | 16.9 °C | +1.0 °C | 51 mm | -2 mm |
| Jun | 12.2 °C | -0.3 °C | 17 mm | -20 mm |
| Jul | 12.3 °C | +0.1 °C | 47 mm | +9 mm |
| Aug | 14.6 °C | +0.3 °C | 71 mm | +25 mm |
| Sep | 17.4 °C | +0.7 °C | 76 mm | +16 mm |
| Oct | 20.4 °C | +0.9 °C | 97 mm | +9 mm |
| Nov | 22.6 °C | -0.6 °C | 104 mm | +10 mm |
| Dec | 29.2 °C | +2.7 °C | 58 mm | -22 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 Olavarría?
Olavarría has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 14.3 °C and it receives 819 mm of precipitation per year.
What is the hottest day ever recorded in Olavarría?
The hottest day measured in Olavarría between 1940 and 2025 was 18 January 2014, reaching 39.3 °C.
What is the coldest day in Olavarría?
The coldest day measured in Olavarría between 1940 and 2025 was 14 June 1967, at -8.9 °C.
Does it snow in Olavarría?
Almost never: Olavarría sees virtually no snow, with about 20 frost days per year.
Has the climate of Olavarría warmed?
Between 1940 and 2025, no statistically significant temperature trend emerges in Olavarría.
What is the wettest day in Olavarría?
The wettest day measured in Olavarría between 1940 and 2025 was 5 January 2021, with 130 mm of rain in 24 hours.
What was the windiest day in Olavarría?
The windiest day measured in Olavarría between 1940 and 2025 was 19 February 1997, with winds reaching 58.7 km/h.
What is the warmest month in Olavarría?
The warmest month in Olavarría is January (21.8 °C on average); the coldest is July (7.2 °C).
How much does it rain in Olavarría?
Olavarría receives on average 819 mm of precipitation per year, spread over about 90 rainy days.
Is it sunny in Olavarría?
Olavarría 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 Olavarría?
The heaviest 24-hour snowfall measured in Olavarría between 1940 and 2025 was 22 July 2009, with 4.8 cm.
Are there tropical nights in Olavarría?
Yes: Olavarría has on average 6 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Olavarría?
In Olavarría, between 1940 and 2025, the highest apparent temperature reached 40.5 °C on 1 February 1947, and the lowest was -13.5 °C on 14 June 1967.
Compare Olavarría with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Olavarría