Vallenar climate — normals and trends
Vallenar (Chile) has a cold desert climate (BWk) under the Köppen-Geiger classification. Its mean annual temperature is 16.4 °C and it receives 47 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 (20.5 °C on average) and the coldest is July (11.7 °C). Rainfall peaks in June.
Vallenar averages 0 frost days, 1 hot days (≥ 30 °C) and 6 rainy days per year.
The mean temperature of Vallenar has changed by -1.0 °C between 1940 and 2025, or -0.12 °C per decade. This trend is statistically significant.
The hottest day of the period reached 32.6 °C (on 20 February 1942) and the coldest -5.8 °C (on 16 June 1940).
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
VallenarAtacama
- coords
- -28.58°, -70.76°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.4°C
Average daily high
23.0°C
Average daily low
10.8°C
Annual rainfall
47mm
Sunshine / day
11.6h
Mean relative humidity
54%
Average peak wind
12.2km/h
Seasonal range
8.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
6 d/yr
Annual snowfall
0.1 cm
Average feels-like high
22.4 °C
Average feels-like low
8.8 °C
Average peak gust
31.6 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
23.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
-1.0 °C
since 1940
-0.1 °C per decade · r² = 0.24 · 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
32.6 °C
20 February 1942
Coldest day
-5.8 °C
16 June 1940
Wettest day
88 mm
17 August 1997
Windiest day
30.4 km/h
10 July 1984
Strongest gust
83.2 km/h
23 June 2000
Hottest feels-like
33.1 °C
21 January 1998
Coldest feels-like
-11.3 °C
16 June 1940
Snowiest day
10.0 cm
15 June 1940
Sunniest day
13.7 h
2 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 | 26.1 °C | -0.5 °C | 0 mm | -0 mm |
| Feb | 26.6 °C | 0.0 °C | 0 mm | -0 mm |
| Mar | 25.7 °C | +0.3 °C | 0 mm | -2 mm |
| Apr | 23.0 °C | -0.3 °C | 0 mm | -2 mm |
| May | 21.2 °C | +0.1 °C | 0 mm | -9 mm |
| Jun | 18.5 °C | -0.7 °C | 1 mm | -11 mm |
| Jul | 19.1 °C | 0.0 °C | 0 mm | -11 mm |
| Aug | 18.6 °C | -1.6 °C | 46 mm | +38 mm |
| Sep | 21.8 °C | +0.3 °C | 0 mm | -2 mm |
| Oct | 22.8 °C | -0.3 °C | 0 mm | -1 mm |
| Nov | 24.3 °C | -0.2 °C | 0 mm | -0 mm |
| Dec | 25.7 °C | -0.1 °C | 0 mm | 0 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 Vallenar?
Vallenar has a cold desert climate (Köppen BWk). Over 1940-2025, the average annual temperature is 16.4 °C and it receives 47 mm of precipitation per year.
What is the hottest day ever recorded in Vallenar?
The hottest day measured in Vallenar between 1940 and 2025 was 20 February 1942, reaching 32.6 °C.
What is the coldest day in Vallenar?
The coldest day measured in Vallenar between 1940 and 2025 was 16 June 1940, at -5.8 °C.
Does it snow in Vallenar?
Almost never: Vallenar sees virtually no snow, with about 0 frost days per year.
Has the climate of Vallenar warmed?
Between 1940 and 2025, no statistically significant temperature trend emerges in Vallenar.
What is the wettest day in Vallenar?
The wettest day measured in Vallenar between 1940 and 2025 was 17 August 1997, with 88 mm of rain in 24 hours.
What was the windiest day in Vallenar?
The windiest day measured in Vallenar between 1940 and 2025 was 10 July 1984, with winds reaching 30.4 km/h.
What is the warmest month in Vallenar?
The warmest month in Vallenar is January (20.5 °C on average); the coldest is July (11.7 °C).
How much does it rain in Vallenar?
Vallenar receives on average 47 mm of precipitation per year, spread over about 6 rainy days.
Is it sunny in Vallenar?
Vallenar gets on average 11.6 hours of sunshine per day, roughly 4,234 hours per year over 1940-2025.
What is the biggest single-day snowfall in Vallenar?
The heaviest 24-hour snowfall measured in Vallenar between 1940 and 2025 was 15 June 1940, with 10.0 cm.
Are there tropical nights in Vallenar?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Vallenar.
What was the most extreme apparent temperature in Vallenar?
In Vallenar, between 1940 and 2025, the highest apparent temperature reached 33.1 °C on 21 January 1998, and the lowest was -11.3 °C on 16 June 1940.
Compare Vallenar with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Vallenar