Santiago climate — normals and trends
Santiago (Chile) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 15.7 °C and it receives 493 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 (22.0 °C on average) and the coldest is July (9.0 °C). Rainfall peaks in June.
Santiago averages 13 frost days, 34 hot days (≥ 30 °C) and 51 rainy days per year.
No statistically significant temperature trend emerges for Santiago between 1940 and 2025: over this span, year-to-year swings outweigh the climate signal.
The hottest day of the period reached 38.7 °C (on 12 January 1941) and the coldest -7.4 °C (on 18 June 1945).
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
SantiagoSantiago Metropolitan
- coords
- -33.46°, -70.65°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.7°C
Average daily high
22.4°C
Average daily low
9.5°C
Annual rainfall
493mm
Sunshine / day
10.8h
Mean relative humidity
60%
Average peak wind
10.2km/h
Seasonal range
13.0°C
Frost days (< 0 °C)
13 d/yr
Hot days (≥ 30 °C)
34 d/yr
Rainy days (≥ 1 mm)
51 d/yr
Annual snowfall
0.5 cm
Average feels-like high
22.3 °C
Average feels-like low
7.7 °C
Average peak gust
26.5 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
20.7 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
38.7 °C
12 January 1941
Coldest day
-7.4 °C
18 June 1945
Wettest day
132 mm
4 July 1984
Windiest day
24.5 km/h
10 November 1947
Strongest gust
76.7 km/h
12 June 1940
Hottest feels-like
38.0 °C
2 February 1973
Coldest feels-like
-11.8 °C
18 June 1945
Snowiest day
5.5 cm
15 July 2017
Sunniest day
14.2 h
14 December 1959
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 | 31.0 °C | +1.8 °C | 0 mm | -3 mm |
| Feb | 31.0 °C | +2.2 °C | 0 mm | -4 mm |
| Mar | 27.8 °C | +0.7 °C | 9 mm | +3 mm |
| Apr | 23.9 °C | +0.7 °C | 2 mm | -19 mm |
| May | 20.1 °C | +1.1 °C | 53 mm | -9 mm |
| Jun | 16.0 °C | +0.2 °C | 79 mm | -28 mm |
| Jul | 18.1 °C | +2.5 °C | 23 mm | -74 mm |
| Aug | 17.3 °C | +0.3 °C | 138 mm | +59 mm |
| Sep | 20.9 °C | +2.0 °C | 49 mm | -10 mm |
| Oct | 24.2 °C | +2.5 °C | 27 mm | -8 mm |
| Nov | 26.3 °C | +1.2 °C | 6 mm | -8 mm |
| Dec | 29.1 °C | +1.2 °C | 10 mm | +5 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 Santiago?
Santiago has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 15.7 °C and it receives 493 mm of precipitation per year.
What is the hottest day ever recorded in Santiago?
The hottest day measured in Santiago between 1940 and 2025 was 12 January 1941, reaching 38.7 °C.
What is the coldest day in Santiago?
The coldest day measured in Santiago between 1940 and 2025 was 18 June 1945, at -7.4 °C.
Does it snow in Santiago?
Almost never: Santiago sees virtually no snow, with about 13 frost days per year.
Has the climate of Santiago warmed?
Between 1940 and 2025, no statistically significant temperature trend emerges in Santiago.
What is the wettest day in Santiago?
The wettest day measured in Santiago between 1940 and 2025 was 4 July 1984, with 132 mm of rain in 24 hours.
What was the windiest day in Santiago?
The windiest day measured in Santiago between 1940 and 2025 was 10 November 1947, with winds reaching 24.5 km/h.
What is the warmest month in Santiago?
The warmest month in Santiago is January (22.0 °C on average); the coldest is July (9.0 °C).
How much does it rain in Santiago?
Santiago receives on average 493 mm of precipitation per year, spread over about 51 rainy days.
Is it sunny in Santiago?
Santiago 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 Santiago?
The heaviest 24-hour snowfall measured in Santiago between 1940 and 2025 was 15 July 2017, with 5.5 cm.
Are there tropical nights in Santiago?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Santiago.
What was the most extreme apparent temperature in Santiago?
In Santiago, between 1940 and 2025, the highest apparent temperature reached 38.0 °C on 2 February 1973, and the lowest was -11.8 °C on 18 June 1945.
Compare Santiago with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Santiago