Arauco in Fall
In fall (March, April and May), Arauco sees average daytime highs around 18°C and overnight lows near 8°C, with 274 mm of rain over about 21 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 22°C in early March to 13°C by late May. The sky is clear or mostly clear about 48% of the time across fall, and the air most often feels dry.
Fall is Arauco's 2nd-best season to visit on our travel score. For the whole year in context, see Arauco's year-round climate.
- Avg daytime high
- 18°C
- 2nd-warmest season
- Avg overnight low
- 8°C
- Rainfall
- 274 mm
- 21 wet days
- Avg wind
- 10 km/h
- Travel score
- 6.2
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in Arauco in Fall
Over the season highs ease from about 22°C in early March to 13°C by late May.
A typical fall day in Arauco reaches about 18°C and drops to 8°C overnight. The warmest of the three months is March, the coolest May.
Arauco 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 | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 23° / 12° | 10 | 1.7 | 14.3 | 9.0 |
| Feb | 23° / 12° | 15 | 2.2 | 13.4 | 8.9 |
| Mar | 21° / 10° | 25 | 3.5 | 12.3 | 8.1 |
| Apr | 18° / 8° | 72 | 6.2 | 11.1 | 6.4 |
| May | 15° / 7° | 178 | 10.9 | 10 | 4.2 |
| Jun | 12° / 6° | 250 | 14.8 | 9.5 | 2.9 |
| Jul | 12° / 5° | 196 | 13.6 | 9.7 | 2.9 |
| Aug | 13° / 5° | 167 | 12.4 | 10.6 | 3.4 |
| Sep | 15° / 6° | 88 | 8.1 | 11.7 | 4.7 |
| Oct | 17° / 7° | 61 | 7.4 | 13 | 5.8 |
| Nov | 19° / 9° | 32 | 4.3 | 14 | 7.3 |
| Dec | 22° / 11° | 25 | 3.5 | 14.5 | 8.2 |
Cloud cover in Fall
The sky is clear or mostly clear about 48% of the time across fall.
Chance of precipitation in Fall
Arauco gets around 274 mm of rain over 21 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 10 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 54 min in early March to 9 h 42 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 4.0 kWh/m².
Hazard calendar for Arauco
In fall, Arauco overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Arauco's rainy season runs May–August, when most of the year's rain falls.
Is fall a good time to visit Arauco?
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 a reasonable time to visit Arauco for sightseeing.
What to pack for Arauco in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Arauco sees daytime highs around 18°C and nights near 8°C. Worth packing: a warm layer, rain gear and sun protection. About 21 days see rain.
Sea temperature near Arauco in Fall
The nearest coast averages about 14°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 14 km away) is warmest in January at about 15°C and coldest in August near 12°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 15 | 14 | 14 | 13 | 12 | 12 | 12 | 12 | 12 | 13 | 14 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Bracing |
| Feb | 15 | Bracing |
| Mar | 14 | Bracing |
| Apr | 14 | Bracing |
| May | 13 | Bracing |
| Jun | 12 | Bracing |
| Jul | 12 | Bracing |
| Aug | 12 | Bracing |
| Sep | 12 | Bracing |
| Oct | 12 | Bracing |
| Nov | 13 | Bracing |
| Dec | 14 | Bracing |
UV index in Arauco in Fall
Clear-sky midday UV across fall averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Arauco peaks around January 12 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 12 | 11 | 9 | 5 | 3 | 2 | 3 | 3 | 5 | 8 | 10 | 12 |
| Level | Extreme | Extreme | Very high | Moderate | Moderate | Low | Moderate | Moderate | Moderate | Very high | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 12 | Extreme |
| Feb | 11 | Extreme |
| Mar | 9 | Very high |
| Apr | 5 | Moderate |
| May | 3 | Moderate |
| Jun | 2 | Low |
| Jul | 3 | Moderate |
| Aug | 3 | Moderate |
| Sep | 5 | Moderate |
| Oct | 8 | Very high |
| Nov | 10 | Very high |
| Dec | 12 | Extreme |
Where is Arauco?
Arauco sits at 37.2°S, 73.3°W, 13 m above sea level, in Chile. The nearest listed city is Lota, 22 km away.
Topography around Arauco
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Arauco.
Within 3 km, the terrain around Arauco has only modest variations in elevation — a maximum elevation change of 107 m around an average of 20 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 656 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,511 m.
The land around Arauco is covered by trees (35%), water (31%) and grassland (20%) within 3 km, trees (45%) and water (37%) within 16 km, and trees (49%) and water (38%) 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 Arauco (-37.2463°, -73.3175°, elevation 13 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.