Viacha climate — normals and trends
Viacha (Bolivia) has a tundra climate (ET) under the Köppen-Geiger classification. Its mean annual temperature is 7.5 °C and it receives 789 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 November (9.4 °C on average) and the coldest is July (5.1 °C). Rainfall peaks in January.
Viacha averages 119 frost days, 0 hot days (≥ 30 °C) and 170 rainy days per year.
Viacha has warmed by +2.7 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.
The number of frost days there went from about 154 to 84 per year over the period.
The hottest day of the period reached 22.8 °C (on 12 December 2018) and the coldest -15.4 °C (on 19 July 2004).
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
ViachaLa Paz Department
- coords
- -16.65°, -68.30°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.5°C
Average daily high
14.6°C
Average daily low
1.5°C
Annual rainfall
789mm
Sunshine / day
10.8h
Mean relative humidity
64%
Average peak wind
11.9km/h
Seasonal range
4.3°C
Frost days (< 0 °C)
119 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
170 d/yr
Annual snowfall
17.9 cm
Average feels-like high
13.0 °C
Average feels-like low
-1.2 °C
Average peak gust
30.5 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
22.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.79 · 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
22.8 °C
12 December 2018
Coldest day
-15.4 °C
19 July 2004
Wettest day
38 mm
21 December 2009
Windiest day
38.3 km/h
28 July 1987
Strongest gust
83.9 km/h
28 July 1987
Hottest feels-like
23.0 °C
22 November 1973
Coldest feels-like
-20.7 °C
19 July 2004
Snowiest day
16.2 cm
30 December 1993
Sunniest day
13.0 h
13 December 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 | 14.4 °C | +0.5 °C | 172 mm | +18 mm |
| Feb | 15.1 °C | +1.2 °C | 125 mm | -8 mm |
| Mar | 14.2 °C | +0.1 °C | 193 mm | +84 mm |
| Apr | 14.8 °C | +0.4 °C | 103 mm | +47 mm |
| May | 14.9 °C | +0.5 °C | 31 mm | +12 mm |
| Jun | 14.5 °C | +0.6 °C | 5 mm | -4 mm |
| Jul | 15.3 °C | +1.5 °C | 10 mm | +1 mm |
| Aug | 15.8 °C | +1.0 °C | 17 mm | -1 mm |
| Sep | 15.9 °C | +0.6 °C | 59 mm | +20 mm |
| Oct | 15.4 °C | -0.7 °C | 97 mm | +44 mm |
| Nov | 16.3 °C | +0.2 °C | 79 mm | +8 mm |
| Dec | 16.5 °C | +1.7 °C | 96 mm | -24 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 Viacha?
Viacha has a tundra climate (Köppen ET). Over 1940-2025, the average annual temperature is 7.5 °C and it receives 789 mm of precipitation per year.
What is the hottest day ever recorded in Viacha?
The hottest day measured in Viacha between 1940 and 2025 was 12 December 2018, reaching 22.8 °C.
What is the coldest day in Viacha?
The coldest day measured in Viacha between 1940 and 2025 was 19 July 2004, at -15.4 °C.
Does it snow in Viacha?
Yes. Viacha gets on average 17.9 cm of snow per year and has around 119 frost days.
Has the climate of Viacha warmed?
Yes: Viacha warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Viacha?
The wettest day measured in Viacha between 1940 and 2025 was 21 December 2009, with 38 mm of rain in 24 hours.
What was the windiest day in Viacha?
The windiest day measured in Viacha between 1940 and 2025 was 28 July 1987, with winds reaching 38.3 km/h.
What is the warmest month in Viacha?
The warmest month in Viacha is November (9.4 °C on average); the coldest is July (5.1 °C).
How much does it rain in Viacha?
Viacha receives on average 789 mm of precipitation per year, spread over about 170 rainy days.
Is it sunny in Viacha?
Viacha gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
What is the biggest single-day snowfall in Viacha?
The heaviest 24-hour snowfall measured in Viacha between 1940 and 2025 was 30 December 1993, with 16.2 cm.
Are there tropical nights in Viacha?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Viacha.
What was the most extreme apparent temperature in Viacha?
In Viacha, between 1940 and 2025, the highest apparent temperature reached 23.0 °C on 22 November 1973, and the lowest was -20.7 °C on 19 July 2004.
Compare Viacha with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Viacha