Constitución climate — normals and trends
Constitución (Chile) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 13.5 °C and it receives 631 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 (16.4 °C on average) and the coldest is August (10.9 °C). Rainfall peaks in June.
Constitución averages 0 frost days, 0 hot days (≥ 30 °C) and 54 rainy days per year.
No statistically significant temperature trend emerges for Constitución between 1940 and 2025: over this span, year-to-year swings outweigh the climate signal.
The hottest day of the period reached 23.8 °C (on 25 January 2017) and the coldest 4.2 °C (on 22 July 2013).
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
ConstituciónMaule Region
- coords
- -35.33°, -72.41°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.5°C
Average daily high
15.1°C
Average daily low
12.0°C
Annual rainfall
631mm
Sunshine / day
10.7h
Mean relative humidity
82%
Average peak wind
24.5km/h
Seasonal range
5.5°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
54 d/yr
Annual snowfall
0.0 cm
Average feels-like high
13.8 °C
Average feels-like low
9.2 °C
Average peak gust
38.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
19.9 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
23.8 °C
25 January 2017
Coldest day
4.2 °C
22 July 2013
Wettest day
102 mm
20 April 1986
Windiest day
69.1 km/h
23 August 1996
Strongest gust
119.9 km/h
23 August 1996
Hottest feels-like
24.9 °C
26 January 2017
Coldest feels-like
-2.6 °C
14 August 1943
Sunniest day
14.2 h
17 December 1942
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 | 18.0 °C | -0.2 °C | 0 mm | -2 mm |
| Feb | 18.2 °C | 0.0 °C | 0 mm | -3 mm |
| Mar | 17.4 °C | -0.1 °C | 13 mm | +5 mm |
| Apr | 15.8 °C | 0.0 °C | 24 mm | -7 mm |
| May | 14.3 °C | +0.1 °C | 67 mm | -50 mm |
| Jun | 12.4 °C | -0.6 °C | 155 mm | -3 mm |
| Jul | 12.7 °C | +0.3 °C | 96 mm | -40 mm |
| Aug | 13.0 °C | +0.5 °C | 84 mm | -5 mm |
| Sep | 13.7 °C | +0.6 °C | 50 mm | +2 mm |
| Oct | 14.6 °C | +0.6 °C | 13 mm | -10 mm |
| Nov | 15.8 °C | +0.3 °C | 1 mm | -9 mm |
| Dec | 17.9 °C | +0.8 °C | 1 mm | -4 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 Constitución?
Constitución has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 13.5 °C and it receives 631 mm of precipitation per year.
What is the hottest day ever recorded in Constitución?
The hottest day measured in Constitución between 1940 and 2025 was 25 January 2017, reaching 23.8 °C.
What is the coldest day in Constitución?
The coldest day measured in Constitución between 1940 and 2025 was 22 July 2013, at 4.2 °C.
Does it snow in Constitución?
Almost never: Constitución sees virtually no snow, with about 0 frost days per year.
Has the climate of Constitución warmed?
Between 1940 and 2025, no statistically significant temperature trend emerges in Constitución.
What is the wettest day in Constitución?
The wettest day measured in Constitución between 1940 and 2025 was 20 April 1986, with 102 mm of rain in 24 hours.
What was the windiest day in Constitución?
The windiest day measured in Constitución between 1940 and 2025 was 23 August 1996, with winds reaching 69.1 km/h.
What is the warmest month in Constitución?
The warmest month in Constitución is January (16.4 °C on average); the coldest is August (10.9 °C).
How much does it rain in Constitución?
Constitución receives on average 631 mm of precipitation per year, spread over about 54 rainy days.
Is it sunny in Constitución?
Constitución gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
Are there tropical nights in Constitución?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Constitución.
What was the most extreme apparent temperature in Constitución?
In Constitución, between 1940 and 2025, the highest apparent temperature reached 24.9 °C on 26 January 2017, and the lowest was -2.6 °C on 14 August 1943.
Compare Constitución with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Constitución