Arauco in Spring
In spring (September, October and November), Arauco sees average daytime highs around 17°C and overnight lows near 7°C, with 182 mm of rain over about 20 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 14°C in early September to 20°C by late November. The sky is clear or mostly clear about 43% of the time across spring, and the air most often feels dry.
Spring is Arauco's 3rd-best season to visit on our travel score. For the whole year in context, see Arauco's year-round climate.
- Avg daytime high
- 17°C
- 3rd-warmest season
- Avg overnight low
- 7°C
- Rainfall
- 182 mm
- 20 wet days
- Avg wind
- 12 km/h
- Travel score
- 5.9
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Arauco in Spring
Over the season highs climb from about 14°C in early September to 20°C by late November.
A typical spring day in Arauco reaches about 17°C and drops to 7°C overnight. The warmest of the three months is November, the coolest September.
Arauco weather by month
How the three spring months (September, October and November) 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 Spring
The sky is clear or mostly clear about 43% of the time across spring.
Chance of precipitation in Spring
Arauco gets around 182 mm of rain over 20 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 12 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 12 min in early September to 14 h 24 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 6.1 kWh/m².
Hazard calendar for Arauco
None of Arauco's seasonal hazards peak in spring. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Arauco's rainy season runs May–August, when most of the year's rain falls.
Is spring a good time to visit Arauco?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Arauco for sightseeing.
What to pack for Arauco in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Arauco sees daytime highs around 17°C and nights near 7°C. Pack sun protection. Worth having: a warm layer and rain gear. About 20 days see rain.
Sea temperature near Arauco in Spring
The nearest coast averages about 12°C across spring — 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 Spring
Clear-sky midday UV across spring averages around 8 — 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.