Rengo climate — normals and trends
Rengo (Chile) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 11.3 °C and it receives 912 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 (18.1 °C on average) and the coldest is July (4.6 °C). Rainfall peaks in June.
Rengo averages 59 frost days, 0 hot days (≥ 30 °C) and 78 rainy days per year.
No statistically significant temperature trend emerges for Rengo between 1940 and 2025: over this span, year-to-year swings outweigh the climate signal.
The hottest day of the period reached 33.2 °C (on 12 January 1941) and the coldest -14.4 °C (on 21 July 1990).
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
RengoO'Higgins Region
- coords
- -34.41°, -70.86°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.3°C
Average daily high
17.6°C
Average daily low
5.0°C
Annual rainfall
912mm
Sunshine / day
10.4h
Mean relative humidity
62%
Average peak wind
8.0km/h
Seasonal range
13.5°C
Frost days (< 0 °C)
59 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
78 d/yr
Annual snowfall
114.0 cm
Average feels-like high
17.2 °C
Average feels-like low
2.3 °C
Average peak gust
34.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
20.1 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
33.2 °C
12 January 1941
Coldest day
-14.4 °C
21 July 1990
Wettest day
139 mm
14 July 1987
Windiest day
18.6 km/h
18 October 1956
Strongest gust
105.1 km/h
24 July 1987
Hottest feels-like
33.3 °C
12 January 1941
Coldest feels-like
-19.2 °C
21 July 1990
Snowiest day
45.2 cm
4 July 1984
Sunniest day
14.3 h
18 December 2023
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 | 25.8 °C | +1.5 °C | 2 mm | -9 mm |
| Feb | 25.7 °C | +1.7 °C | 0 mm | -9 mm |
| Mar | 22.4 °C | +0.1 °C | 21 mm | +8 mm |
| Apr | 18.1 °C | -0.6 °C | 38 mm | -9 mm |
| May | 15.1 °C | +0.5 °C | 143 mm | +10 mm |
| Jun | 10.5 °C | -0.5 °C | 118 mm | -84 mm |
| Jul | 13.2 °C | +2.7 °C | 43 mm | -127 mm |
| Aug | 11.6 °C | -0.4 °C | 154 mm | +26 mm |
| Sep | 15.7 °C | +1.8 °C | 82 mm | -8 mm |
| Oct | 18.8 °C | +2.1 °C | 40 mm | -18 mm |
| Nov | 20.9 °C | +0.8 °C | 12 mm | -22 mm |
| Dec | 23.3 °C | +0.4 °C | 41 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 Rengo?
Rengo has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 11.3 °C and it receives 912 mm of precipitation per year.
What is the hottest day ever recorded in Rengo?
The hottest day measured in Rengo between 1940 and 2025 was 12 January 1941, reaching 33.2 °C.
What is the coldest day in Rengo?
The coldest day measured in Rengo between 1940 and 2025 was 21 July 1990, at -14.4 °C.
Does it snow in Rengo?
Yes. Rengo gets on average 114.0 cm of snow per year and has around 59 frost days.
Has the climate of Rengo warmed?
Between 1940 and 2025, no statistically significant temperature trend emerges in Rengo.
What is the wettest day in Rengo?
The wettest day measured in Rengo between 1940 and 2025 was 14 July 1987, with 139 mm of rain in 24 hours.
What was the windiest day in Rengo?
The windiest day measured in Rengo between 1940 and 2025 was 18 October 1956, with winds reaching 18.6 km/h.
What is the warmest month in Rengo?
The warmest month in Rengo is January (18.1 °C on average); the coldest is July (4.6 °C).
How much does it rain in Rengo?
Rengo receives on average 912 mm of precipitation per year, spread over about 78 rainy days.
Is it sunny in Rengo?
Rengo gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.
What is the biggest single-day snowfall in Rengo?
The heaviest 24-hour snowfall measured in Rengo between 1940 and 2025 was 4 July 1984, with 45.2 cm.
Are there tropical nights in Rengo?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Rengo.
What was the most extreme apparent temperature in Rengo?
In Rengo, between 1940 and 2025, the highest apparent temperature reached 33.3 °C on 12 January 1941, and the lowest was -19.2 °C on 21 July 1990.
Compare Rengo with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Rengo