Chillan climate — normals and trends
Chillan (Chile) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 13.6 °C and it receives 1,137 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 (20.0 °C on average) and the coldest is July (8.0 °C). Rainfall peaks in June.
Chillan averages 10 frost days, 17 hot days (≥ 30 °C) and 75 rainy days per year.
No statistically significant temperature trend emerges for Chillan between 1940 and 2025: over this span, year-to-year swings outweigh the climate signal.
The hottest day of the period reached 38.9 °C (on 3 February 2023) and the coldest -6.2 °C (on 31 July 1992).
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
ChillanÑuble
- coords
- -36.61°, -72.10°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.6°C
Average daily high
19.9°C
Average daily low
8.1°C
Annual rainfall
1,137mm
Sunshine / day
10.3h
Mean relative humidity
73%
Average peak wind
17.6km/h
Seasonal range
12.0°C
Frost days (< 0 °C)
10 d/yr
Hot days (≥ 30 °C)
17 d/yr
Rainy days (≥ 1 mm)
75 d/yr
Annual snowfall
0.2 cm
Average feels-like high
18.7 °C
Average feels-like low
5.7 °C
Average peak gust
35.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
18.9 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
38.9 °C
3 February 2023
Coldest day
-6.2 °C
31 July 1992
Wettest day
128 mm
4 May 1992
Windiest day
51.8 km/h
13 July 2016
Strongest gust
111.2 km/h
15 June 1966
Hottest feels-like
40.0 °C
3 February 2023
Coldest feels-like
-10.1 °C
31 July 1992
Snowiest day
7.4 cm
26 June 1946
Sunniest day
14.5 h
10 December 1941
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 | 30.9 °C | +3.3 °C | 1 mm | -10 mm |
| Feb | 29.5 °C | +2.2 °C | 0 mm | -15 mm |
| Mar | 25.8 °C | +1.1 °C | 55 mm | +35 mm |
| Apr | 19.0 °C | -0.9 °C | 77 mm | +9 mm |
| May | 15.4 °C | -0.1 °C | 125 mm | -72 mm |
| Jun | 12.6 °C | -0.4 °C | 190 mm | -65 mm |
| Jul | 14.1 °C | +1.3 °C | 147 mm | -68 mm |
| Aug | 15.4 °C | +1.1 °C | 111 mm | -47 mm |
| Sep | 17.3 °C | +0.9 °C | 94 mm | -4 mm |
| Oct | 21.0 °C | +2.0 °C | 46 mm | -12 mm |
| Nov | 24.8 °C | +2.3 °C | 3 mm | -24 mm |
| Dec | 27.9 °C | +2.2 °C | 7 mm | -10 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 Chillan?
Chillan has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 13.6 °C and it receives 1,137 mm of precipitation per year.
What is the hottest day ever recorded in Chillan?
The hottest day measured in Chillan between 1940 and 2025 was 3 February 2023, reaching 38.9 °C.
What is the coldest day in Chillan?
The coldest day measured in Chillan between 1940 and 2025 was 31 July 1992, at -6.2 °C.
Does it snow in Chillan?
Almost never: Chillan sees virtually no snow, with about 10 frost days per year.
Has the climate of Chillan warmed?
Between 1940 and 2025, no statistically significant temperature trend emerges in Chillan.
What is the wettest day in Chillan?
The wettest day measured in Chillan between 1940 and 2025 was 4 May 1992, with 128 mm of rain in 24 hours.
What was the windiest day in Chillan?
The windiest day measured in Chillan between 1940 and 2025 was 13 July 2016, with winds reaching 51.8 km/h.
What is the warmest month in Chillan?
The warmest month in Chillan is January (20.0 °C on average); the coldest is July (8.0 °C).
How much does it rain in Chillan?
Chillan receives on average 1,137 mm of precipitation per year, spread over about 75 rainy days.
Is it sunny in Chillan?
Chillan gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.
What is the biggest single-day snowfall in Chillan?
The heaviest 24-hour snowfall measured in Chillan between 1940 and 2025 was 26 June 1946, with 7.4 cm.
Are there tropical nights in Chillan?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Chillan.
What was the most extreme apparent temperature in Chillan?
In Chillan, between 1940 and 2025, the highest apparent temperature reached 40.0 °C on 3 February 2023, and the lowest was -10.1 °C on 31 July 1992.
Compare Chillan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chillan