San Rafael climate — normals and trends
San Rafael (Argentina) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 16.4 °C and it receives 486 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 (24.8 °C on average) and the coldest is July (7.9 °C). Rainfall peaks in October.
San Rafael averages 13 frost days, 74 hot days (≥ 30 °C) and 82 rainy days per year.
San Rafael has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The hottest day of the period reached 42.2 °C (on 30 January 2003) and the coldest -13.4 °C (on 12 July 2000).
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 RafaelMendoza
- coords
- -34.62°, -68.33°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.4°C
Average daily high
22.9°C
Average daily low
10.5°C
Annual rainfall
486mm
Sunshine / day
10.6h
Mean relative humidity
55%
Average peak wind
18.8km/h
Seasonal range
16.9°C
Frost days (< 0 °C)
13 d/yr
Hot days (≥ 30 °C)
74 d/yr
Rainy days (≥ 1 mm)
82 d/yr
Annual snowfall
4.3 cm
Average feels-like high
21.0 °C
Average feels-like low
7.9 °C
Average peak gust
34.4 km/h
Tropical nights (≥ 20 °C)
18 d/yr
Solar radiation
18.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.25 · p = < 0.001
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
42.2 °C
30 January 2003
Coldest day
-13.4 °C
12 July 2000
Wettest day
77 mm
30 January 1962
Windiest day
61.7 km/h
12 September 1999
Strongest gust
101.2 km/h
12 September 1999
Hottest feels-like
41.9 °C
12 January 2022
Coldest feels-like
-18.7 °C
12 July 2000
Snowiest day
16.5 cm
1 July 1942
Sunniest day
14.3 h
27 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 | 34.5 °C | +3.1 °C | 44 mm | -7 mm |
| Feb | 34.3 °C | +4.4 °C | 31 mm | -16 mm |
| Mar | 25.5 °C | -1.0 °C | 40 mm | -8 mm |
| Apr | 21.8 °C | -0.2 °C | 11 mm | -29 mm |
| May | 20.2 °C | +2.3 °C | 27 mm | -5 mm |
| Jun | 15.7 °C | +0.9 °C | 5 mm | -16 mm |
| Jul | 16.4 °C | +1.8 °C | 6 mm | -15 mm |
| Aug | 18.1 °C | +1.0 °C | 80 mm | +57 mm |
| Sep | 22.7 °C | +2.8 °C | 23 mm | -18 mm |
| Oct | 27.4 °C | +4.0 °C | 9 mm | -50 mm |
| Nov | 29.8 °C | +2.4 °C | 36 mm | -19 mm |
| Dec | 32.5 °C | +2.1 °C | 43 mm | -5 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 Rafael?
San Rafael has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 16.4 °C and it receives 486 mm of precipitation per year.
What is the hottest day ever recorded in San Rafael?
The hottest day measured in San Rafael between 1940 and 2025 was 30 January 2003, reaching 42.2 °C.
What is the coldest day in San Rafael?
The coldest day measured in San Rafael between 1940 and 2025 was 12 July 2000, at -13.4 °C.
Does it snow in San Rafael?
Yes. San Rafael gets on average 4.3 cm of snow per year and has around 13 frost days.
Has the climate of San Rafael warmed?
Yes: San Rafael warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in San Rafael?
The wettest day measured in San Rafael between 1940 and 2025 was 30 January 1962, with 77 mm of rain in 24 hours.
What was the windiest day in San Rafael?
The windiest day measured in San Rafael between 1940 and 2025 was 12 September 1999, with winds reaching 61.7 km/h.
What is the warmest month in San Rafael?
The warmest month in San Rafael is January (24.8 °C on average); the coldest is July (7.9 °C).
How much does it rain in San Rafael?
San Rafael receives on average 486 mm of precipitation per year, spread over about 82 rainy days.
Is it sunny in San Rafael?
San Rafael gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
What is the biggest single-day snowfall in San Rafael?
The heaviest 24-hour snowfall measured in San Rafael between 1940 and 2025 was 1 July 1942, with 16.5 cm.
Are there tropical nights in San Rafael?
Yes: San Rafael has on average 18 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in San Rafael?
In San Rafael, between 1940 and 2025, the highest apparent temperature reached 41.9 °C on 12 January 2022, and the lowest was -18.7 °C on 12 July 2000.
Compare San Rafael with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around San Rafael