Rancagua in Fall
In fall (March, April and May), Rancagua sees average daytime highs around 20°C and overnight lows near 7°C, with 154 mm of precipitation over about 13 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 25°C in early March to 15°C by late May. The sky is clear or mostly clear about 61% of the time across fall, and the air most often feels dry.
Fall is Rancagua's 2nd-best season to visit on our travel score. For the whole year in context, see Rancagua's year-round climate.
- Avg daytime high
- 20°C
- 2nd-warmest season
- Avg overnight low
- 7°C
- Precipitation
- 154 mm
- 13 wet days
- Avg wind
- 4 km/h
- Travel score
- 7.5
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in Rancagua in Fall
Over the season highs ease from about 25°C in early March to 15°C by late May.
A typical fall day in Rancagua reaches about 20°C and drops to 7°C overnight. The warmest of the three months is March, the coolest May.
Rancagua weather by month
How the three fall months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 26° / 14° | 6 | 1.4 | 0 | 14 | 8.9 |
| Feb | 26° / 13° | 7 | 1.5 | 0 | 13.3 | 8.9 |
| Mar | 24° / 11° | 11 | 1.8 | 0 | 12.3 | 9.1 |
| Apr | 20° / 7° | 44 | 3.9 | 0 | 11.2 | 7.7 |
| May | 17° / 4° | 99 | 7.3 | 0.1 | 10.2 | 5.7 |
| Jun | 14° / 2° | 167 | 9.4 | 1.4 | 9.8 | 3.9 |
| Jul | 13° / 1° | 124 | 9.2 | 1.5 | 10 | 3.9 |
| Aug | 15° / 2° | 108 | 8.6 | 1.2 | 10.7 | 4.7 |
| Sep | 17° / 4° | 81 | 10 | 0.4 | 11.8 | 5.5 |
| Oct | 19° / 6° | 60 | 8.5 | 0.2 | 12.9 | 6.6 |
| Nov | 22° / 9° | 26 | 4.7 | 0 | 13.8 | 8.0 |
| Dec | 25° / 12° | 13 | 2 | 0 | 14.2 | 8.9 |
Cloud cover in Fall
The sky is clear or mostly clear about 61% of the time across fall.
Chance of precipitation in Fall
Rancagua gets around 154 mm of rain and snow over 13 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 4 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 48 min in early March to 9 h 54 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 4.6 kWh/m².
Hazard calendar for Rancagua
In fall, Rancagua overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Rancagua's rainy season runs May–September, when most of the year's rain falls.
Is fall a good time to visit Rancagua?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is one of the better times to visit Rancagua for general sightseeing.
What to pack for Rancagua in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Rancagua sees daytime highs around 20°C and nights near 7°C. Pack sun protection. Worth having: light clothes and a warm layer. About 13 days see rain.
UV index in Rancagua in Fall
Clear-sky midday UV across fall averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Rancagua peaks around January 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near May 24 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 12 | 10 | 5 | 3 | 3 | 3 | 3 | 6 | 9 | 11 | 12 |
| Level | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | Moderate | High | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 12 | Extreme |
| Mar | 10 | Very high |
| Apr | 5 | High |
| May | 3 | Moderate |
| Jun | 3 | Moderate |
| Jul | 3 | Moderate |
| Aug | 3 | Moderate |
| Sep | 6 | High |
| Oct | 9 | Very high |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Air quality in Rancagua in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Rancagua is worst in July — around 35 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (December, 17 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Rancagua's WHO annual average of 25.9 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 22 | 19 | 18 | 25 | 34 | 34 | 35 | 34 | 31 | 24 | 18 | 17 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Poor | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 22 | Moderate |
| Feb | 19 | Moderate |
| Mar | 18 | Moderate |
| Apr | 25 | Moderate |
| May | 34 | Moderate |
| Jun | 34 | Moderate |
| Jul | 35 | Poor |
| Aug | 34 | Moderate |
| Sep | 31 | Moderate |
| Oct | 24 | Moderate |
| Nov | 18 | Moderate |
| Dec | 17 | Moderate |
Where is Rancagua?
Rancagua sits at 34.2°S, 70.7°W, 520 m above sea level, in Chile. The nearest listed city is Machalí, 8.0 km away.
Topography around Rancagua
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rancagua.
Within 3 km, the terrain around Rancagua has only modest variations in elevation — a maximum elevation change of 70 m around an average of 502 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,373 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,124 m.
The land around Rancagua is covered by artificial surfaces (74%) within 3 km, shrubs (28%), cropland (25%) and trees (22%) within 16 km, and bare terrain (24%) and trees (20%) within 80 km.
Chile travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F / L
- 220 V · 50 Hz
- Prices
- ≈ 48% of US
- price level, 2025
- GDP per capita
- $17,995
- 2025
- Happiness
- 6.3 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 6.3
- per 100k, 2023
- Road deaths
- 14.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 517
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Rancagua (-34.1691°, -70.7405°, elevation 520 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.