Rio Grande climate — normals and trends
Rio Grande (Argentina) has a subpolar oceanic climate (Cfc) under the Köppen-Geiger classification. Its mean annual temperature is 6.2 °C and it receives 429 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 February (10.2 °C on average) and the coldest is July (1.8 °C). Rainfall peaks in January.
Rio Grande averages 48 frost days, 0 hot days (≥ 30 °C) and 108 rainy days per year.
Rio Grande has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 67 to 29 per year over the period.
The hottest day of the period reached 21.2 °C (on 5 February 2019) and the coldest -10.8 °C (on 15 July 1953).
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
Rio GrandeTierra del Fuego
- coords
- -53.79°, -67.71°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.2°C
Average daily high
8.3°C
Average daily low
4.0°C
Annual rainfall
429mm
Sunshine / day
9.1h
Mean relative humidity
75%
Average peak wind
35.4km/h
Seasonal range
8.4°C
Frost days (< 0 °C)
48 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
108 d/yr
Annual snowfall
15.4 cm
Average feels-like high
3.1 °C
Average feels-like low
-1.8 °C
Average peak gust
51.5 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
12.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.58 · 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
21.2 °C
5 February 2019
Coldest day
-10.8 °C
15 July 1953
Wettest day
33 mm
1 March 1978
Windiest day
84.4 km/h
21 July 1945
Strongest gust
127.1 km/h
21 July 1945
Hottest feels-like
18.3 °C
29 December 1956
Coldest feels-like
-16.2 °C
15 July 1953
Snowiest day
12.4 cm
30 July 1947
Sunniest day
16.8 h
26 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 | 14.1 °C | +1.6 °C | 54 mm | +4 mm |
| Feb | 12.6 °C | 0.0 °C | 41 mm | +0 mm |
| Mar | 11.6 °C | +0.3 °C | 44 mm | -1 mm |
| Apr | 9.8 °C | +0.8 °C | 38 mm | +2 mm |
| May | 6.7 °C | +0.3 °C | 42 mm | +7 mm |
| Jun | 5.0 °C | +0.9 °C | 23 mm | -8 mm |
| Jul | 5.0 °C | +1.4 °C | 26 mm | -6 mm |
| Aug | 5.8 °C | +1.3 °C | 20 mm | -9 mm |
| Sep | 7.4 °C | +1.2 °C | 13 mm | -12 mm |
| Oct | 9.4 °C | +1.2 °C | 28 mm | +2 mm |
| Nov | 11.1 °C | +1.2 °C | 56 mm | +22 mm |
| Dec | 11.9 °C | +0.5 °C | 56 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 Rio Grande?
Rio Grande has a subpolar oceanic climate (Köppen Cfc). Over 1940-2025, the average annual temperature is 6.2 °C and it receives 429 mm of precipitation per year.
What is the hottest day ever recorded in Rio Grande?
The hottest day measured in Rio Grande between 1940 and 2025 was 5 February 2019, reaching 21.2 °C.
What is the coldest day in Rio Grande?
The coldest day measured in Rio Grande between 1940 and 2025 was 15 July 1953, at -10.8 °C.
Does it snow in Rio Grande?
Yes. Rio Grande gets on average 15.4 cm of snow per year and has around 48 frost days.
Has the climate of Rio Grande warmed?
Yes: Rio Grande warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Rio Grande?
The wettest day measured in Rio Grande between 1940 and 2025 was 1 March 1978, with 33 mm of rain in 24 hours.
What was the windiest day in Rio Grande?
The windiest day measured in Rio Grande between 1940 and 2025 was 21 July 1945, with winds reaching 84.4 km/h.
What is the warmest month in Rio Grande?
The warmest month in Rio Grande is February (10.2 °C on average); the coldest is July (1.8 °C).
How much does it rain in Rio Grande?
Rio Grande receives on average 429 mm of precipitation per year, spread over about 108 rainy days.
Is it sunny in Rio Grande?
Rio Grande gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.
What is the biggest single-day snowfall in Rio Grande?
The heaviest 24-hour snowfall measured in Rio Grande between 1940 and 2025 was 30 July 1947, with 12.4 cm.
Are there tropical nights in Rio Grande?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Rio Grande.
What was the most extreme apparent temperature in Rio Grande?
In Rio Grande, between 1940 and 2025, the highest apparent temperature reached 18.3 °C on 29 December 1956, and the lowest was -16.2 °C on 15 July 1953.
Compare Rio Grande with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Rio Grande