Viedma climate — normals and trends
Viedma (Argentina) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 14.5 °C and it receives 369 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 (21.9 °C on average) and the coldest is July (7.3 °C). Rainfall peaks in March.
Viedma averages 15 frost days, 37 hot days (≥ 30 °C) and 63 rainy days per year.
No statistically significant temperature trend emerges for Viedma between 1940 and 2025: over this span, year-to-year swings outweigh the climate signal.
The hottest day of the period reached 42.7 °C (on 20 December 1973) and the coldest -9.1 °C (on 4 July 1988).
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
ViedmaRio Negro
- coords
- -40.82°, -63.00°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.5°C
Average daily high
20.2°C
Average daily low
9.3°C
Annual rainfall
369mm
Sunshine / day
10.2h
Mean relative humidity
61%
Average peak wind
22.7km/h
Seasonal range
14.6°C
Frost days (< 0 °C)
15 d/yr
Hot days (≥ 30 °C)
37 d/yr
Rainy days (≥ 1 mm)
63 d/yr
Annual snowfall
0.2 cm
Average feels-like high
17.6 °C
Average feels-like low
6.3 °C
Average peak gust
44.4 km/h
Tropical nights (≥ 20 °C)
8 d/yr
Solar radiation
17.5 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
42.7 °C
20 December 1973
Coldest day
-9.1 °C
4 July 1988
Wettest day
80 mm
23 February 1981
Windiest day
57.0 km/h
30 June 1971
Strongest gust
113.8 km/h
18 June 2017
Hottest feels-like
42.4 °C
19 December 1962
Coldest feels-like
-13.6 °C
4 July 1988
Snowiest day
2.7 cm
17 June 1982
Sunniest day
14.7 h
3 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 | 29.4 °C | +1.1 °C | 10 mm | -26 mm |
| Feb | 27.3 °C | -0.1 °C | 23 mm | -17 mm |
| Mar | 24.8 °C | +0.3 °C | 42 mm | -1 mm |
| Apr | 18.6 °C | -1.6 °C | 74 mm | +45 mm |
| May | 16.8 °C | +0.9 °C | 13 mm | -11 mm |
| Jun | 12.6 °C | +0.1 °C | 17 mm | -6 mm |
| Jul | 12.7 °C | +0.5 °C | 6 mm | -17 mm |
| Aug | 15.6 °C | +1.3 °C | 16 mm | -7 mm |
| Sep | 17.4 °C | +0.6 °C | 52 mm | +23 mm |
| Oct | 21.5 °C | +1.3 °C | 9 mm | -23 mm |
| Nov | 24.1 °C | +0.2 °C | 37 mm | +3 mm |
| Dec | 27.6 °C | +1.0 °C | 10 mm | -25 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 Viedma?
Viedma has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 14.5 °C and it receives 369 mm of precipitation per year.
What is the hottest day ever recorded in Viedma?
The hottest day measured in Viedma between 1940 and 2025 was 20 December 1973, reaching 42.7 °C.
What is the coldest day in Viedma?
The coldest day measured in Viedma between 1940 and 2025 was 4 July 1988, at -9.1 °C.
Does it snow in Viedma?
Almost never: Viedma sees virtually no snow, with about 15 frost days per year.
Has the climate of Viedma warmed?
Between 1940 and 2025, no statistically significant temperature trend emerges in Viedma.
What is the wettest day in Viedma?
The wettest day measured in Viedma between 1940 and 2025 was 23 February 1981, with 80 mm of rain in 24 hours.
What was the windiest day in Viedma?
The windiest day measured in Viedma between 1940 and 2025 was 30 June 1971, with winds reaching 57.0 km/h.
What is the warmest month in Viedma?
The warmest month in Viedma is January (21.9 °C on average); the coldest is July (7.3 °C).
How much does it rain in Viedma?
Viedma receives on average 369 mm of precipitation per year, spread over about 63 rainy days.
Is it sunny in Viedma?
Viedma gets on average 10.2 hours of sunshine per day, roughly 3,723 hours per year over 1940-2025.
What is the biggest single-day snowfall in Viedma?
The heaviest 24-hour snowfall measured in Viedma between 1940 and 2025 was 17 June 1982, with 2.7 cm.
Are there tropical nights in Viedma?
Yes: Viedma has on average 8 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Viedma?
In Viedma, between 1940 and 2025, the highest apparent temperature reached 42.4 °C on 19 December 1962, and the lowest was -13.6 °C on 4 July 1988.
Compare Viedma with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Viedma