San Carlos de Bolivar climate — normals and trends
San Carlos de Bolivar (Argentina) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.5 °C and it receives 879 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 (23.0 °C on average) and the coldest is July (8.2 °C). Rainfall peaks in October.
San Carlos de Bolivar averages 14 frost days, 38 hot days (≥ 30 °C) and 89 rainy days per year.
No statistically significant temperature trend emerges for San Carlos de Bolivar between 1940 and 2025: over this span, year-to-year swings outweigh the climate signal.
The hottest day of the period reached 40.8 °C (on 18 January 2014) and the coldest -8.2 °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
San Carlos de BolivarBuenos Aires
- coords
- -36.23°, -61.12°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.5°C
Average daily high
21.3°C
Average daily low
10.3°C
Annual rainfall
879mm
Sunshine / day
9.5h
Mean relative humidity
71%
Average peak wind
19.0km/h
Seasonal range
14.8°C
Frost days (< 0 °C)
14 d/yr
Hot days (≥ 30 °C)
38 d/yr
Rainy days (≥ 1 mm)
89 d/yr
Annual snowfall
0.1 cm
Average feels-like high
20.4 °C
Average feels-like low
8.2 °C
Average peak gust
36.1 km/h
Tropical nights (≥ 20 °C)
13 d/yr
Solar radiation
17.2 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
40.8 °C
18 January 2014
Coldest day
-8.2 °C
14 June 1967
Wettest day
119 mm
18 January 1952
Windiest day
53.2 km/h
22 June 1971
Strongest gust
102.6 km/h
29 May 1984
Hottest feels-like
42.5 °C
18 January 2014
Coldest feels-like
-12.5 °C
14 June 1967
Snowiest day
2.1 cm
22 July 2009
Sunniest day
14.0 h
5 January 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 | 31.8 °C | +2.6 °C | 13 mm | -84 mm |
| Feb | 29.4 °C | +1.3 °C | 169 mm | +80 mm |
| Mar | 24.9 °C | -0.5 °C | 120 mm | +22 mm |
| Apr | 20.5 °C | -0.8 °C | 57 mm | -20 mm |
| May | 18.4 °C | +1.2 °C | 47 mm | -8 mm |
| Jun | 13.8 °C | 0.0 °C | 13 mm | -24 mm |
| Jul | 13.7 °C | +0.2 °C | 75 mm | +38 mm |
| Aug | 16.1 °C | +0.5 °C | 105 mm | +61 mm |
| Sep | 18.9 °C | +0.8 °C | 117 mm | +53 mm |
| Oct | 22.1 °C | +1.2 °C | 78 mm | -21 mm |
| Nov | 23.9 °C | -0.6 °C | 125 mm | +26 mm |
| Dec | 30.0 °C | +2.2 °C | 75 mm | -11 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 San Carlos de Bolivar?
San Carlos de Bolivar has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.5 °C and it receives 879 mm of precipitation per year.
What is the hottest day ever recorded in San Carlos de Bolivar?
The hottest day measured in San Carlos de Bolivar between 1940 and 2025 was 18 January 2014, reaching 40.8 °C.
What is the coldest day in San Carlos de Bolivar?
The coldest day measured in San Carlos de Bolivar between 1940 and 2025 was 14 June 1967, at -8.2 °C.
Does it snow in San Carlos de Bolivar?
Almost never: San Carlos de Bolivar sees virtually no snow, with about 14 frost days per year.
Has the climate of San Carlos de Bolivar warmed?
Between 1940 and 2025, no statistically significant temperature trend emerges in San Carlos de Bolivar.
What is the wettest day in San Carlos de Bolivar?
The wettest day measured in San Carlos de Bolivar between 1940 and 2025 was 18 January 1952, with 119 mm of rain in 24 hours.
What was the windiest day in San Carlos de Bolivar?
The windiest day measured in San Carlos de Bolivar between 1940 and 2025 was 22 June 1971, with winds reaching 53.2 km/h.
What is the warmest month in San Carlos de Bolivar?
The warmest month in San Carlos de Bolivar is January (23.0 °C on average); the coldest is July (8.2 °C).
How much does it rain in San Carlos de Bolivar?
San Carlos de Bolivar receives on average 879 mm of precipitation per year, spread over about 89 rainy days.
Is it sunny in San Carlos de Bolivar?
San Carlos de Bolivar 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 San Carlos de Bolivar?
The heaviest 24-hour snowfall measured in San Carlos de Bolivar between 1940 and 2025 was 22 July 2009, with 2.1 cm.
Are there tropical nights in San Carlos de Bolivar?
Yes: San Carlos de Bolivar has on average 13 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in San Carlos de Bolivar?
In San Carlos de Bolivar, between 1940 and 2025, the highest apparent temperature reached 42.5 °C on 18 January 2014, and the lowest was -12.5 °C on 14 June 1967.
Compare San Carlos de Bolivar with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around San Carlos de Bolivar