Climate and average weather in Arauco
In Arauco, the summers are warm, dry, and clear and the winters are cool and partly cloudy.
Over the course of the year, the temperature in Arauco typically varies from 5°C to 23°C, and is rarely below -0°C or above 27°C. January is the hottest month of the year, while July is the coldest.
Based on the travel score, the best time of year to visit Arauco for warm-weather activities is from mid November to early April.
- Hottest
- Jan
- 23°
- Coldest
- Jul
- 5°
- Wettest
- Jun
- 250 mm
- Driest
- Jan
- 10 mm
- Rain / yr
- 1119 mm
- 89 wet days
- Daylight
- 9.4–14.6 h
- shortest–longest
- Elevation
- 13 m
- 37.2°S
- Clearest
- Feb
- 20% cloud
Arauco is city in Chile.
- Density
- 3,997/km²
- people per km²
- Founded
- 1552
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Arauco weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around mid November to early April.
Temperature through the year
Daily average highs and lows in Arauco, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 3.6 months, from December 6 to March 23, with daily high temperatures above 21°C. The hottest month of the year in Arauco is January, with an average high of 23°C and low of 12°C.
The cool season lasts 3.7 months, from May 18 to September 8, with daily high temperatures below 14°C. The coldest month of the year in Arauco is July, with an average low of 5°C and high of 12°C.
Days typically run about 9°C warmer than nights, with the widest day–night swing (around 12°C) in February.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 23 | 23 | 21 | 18 | 15 | 12 | 12 | 13 | 15 | 17 | 19 | 22 |
| Avg low (°C) | 12 | 12 | 10 | 8 | 7 | 6 | 5 | 5 | 6 | 7 | 9 | 11 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 23 | 12 |
| Feb | 23 | 12 |
| Mar | 21 | 10 |
| Apr | 18 | 8 |
| May | 15 | 7 |
| Jun | 12 | 6 |
| Jul | 12 | 5 |
| Aug | 13 | 5 |
| Sep | 15 | 6 |
| Oct | 17 | 7 |
| Nov | 19 | 9 |
| Dec | 22 | 11 |
Average hourly temperature in Arauco
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on January afternoons, near 23°C, and coldest before dawn in July, near 5°C.
Arauco weather by month
Every month at a glance. Click a month for its detailed page.
| 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 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Arauco gets about 1119 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.
The wetter season lasts 4.9 months, from around Apr 29 to Sep 24, peaking in June at about 51% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 15.
June is the wettest month by volume, with 250 mm over about 15 wet days; January is the driest, with 10 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 6 | 7 | 12 | 21 | 35 | 49 | 44 | 39 | 28 | 23 | 15 | 11 |
| Rain days | 2 | 2 | 4 | 6 | 11 | 15 | 14 | 12 | 8 | 7 | 4 | 4 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 6 | 2 |
| Feb | 7 | 2 |
| Mar | 12 | 4 |
| Apr | 21 | 6 |
| May | 35 | 11 |
| Jun | 49 | 15 |
| Jul | 44 | 14 |
| Aug | 39 | 12 |
| Sep | 28 | 8 |
| Oct | 23 | 7 |
| Nov | 15 | 4 |
| Dec | 11 | 4 |
Monthly rainfall
Over a full year, Arauco collects about 1119 mm of rain across 89 wet days — roughly 93 mm in an average month.
It doesn’t fall evenly. June is the wettest month with 250 mm, while January is the driest at just 10 mm. The three wettest months alone bring about 56% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 10 | 15 | 25 | 72 | 178 | 250 | 196 | 167 | 88 | 61 | 32 | 25 |
| Rain days | 2 | 2 | 4 | 6 | 11 | 15 | 14 | 12 | 8 | 7 | 4 | 4 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 10 | 2 |
| Feb | 15 | 2 |
| Mar | 25 | 4 |
| Apr | 72 | 6 |
| May | 178 | 11 |
| Jun | 250 | 15 |
| Jul | 196 | 14 |
| Aug | 167 | 12 |
| Sep | 88 | 8 |
| Oct | 61 | 7 |
| Nov | 32 | 4 |
| Dec | 25 | 4 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Arauco, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around October 25 and lasts for 5.7 months, ending around April 14. The clearest month is February, when the sky is clear, mostly clear, or partly cloudy 87% of the time on average.
The cloudier part of the year begins around April 15 and lasts for 6.3 months, ending around October 24. The cloudiest month is June, when it is overcast or mostly cloudy 65% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 86 | 87 | 78 | 60 | 41 | 35 | 41 | 42 | 50 | 57 | 67 | 79 |
| Cloudier (%) | 14 | 13 | 22 | 40 | 59 | 65 | 59 | 58 | 50 | 43 | 33 | 21 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 86 | 14 |
| Feb | 87 | 13 |
| Mar | 78 | 22 |
| Apr | 60 | 40 |
| May | 41 | 59 |
| Jun | 35 | 65 |
| Jul | 41 | 59 |
| Aug | 42 | 58 |
| Sep | 50 | 50 |
| Oct | 57 | 43 |
| Nov | 67 | 33 |
| Dec | 79 | 21 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around December 16, brings about 14 h 36 min of light; the shortest, around June 17, only 9 h 24 min — a swing of roughly 5 h 12 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.3 | 13.4 | 12.3 | 11.1 | 10.0 | 9.5 | 9.7 | 10.6 | 11.7 | 13.0 | 14.0 | 14.5 |
| Sunrise (AM) | 6:54 | 7:25 | 7:54 | 8:22 | 8:49 | 9:10 | 9:09 | 8:41 | 7:55 | 7:09 | 6:38 | 6:33 |
| Sunset (PM) | 9:12 | 8:51 | 8:12 | 7:25 | 6:50 | 6:37 | 6:49 | 7:14 | 7:41 | 8:08 | 8:40 | 9:06 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 14.3 | 6:54 | 9:12 |
| Feb | 13.4 | 7:25 | 8:51 |
| Mar | 12.3 | 7:54 | 8:12 |
| Apr | 11.1 | 8:22 | 7:25 |
| May | 10.0 | 8:49 | 6:50 |
| Jun | 9.5 | 9:10 | 6:37 |
| Jul | 9.7 | 9:09 | 6:49 |
| Aug | 10.6 | 8:41 | 7:14 |
| Sep | 11.7 | 7:55 | 7:41 |
| Oct | 13.0 | 7:09 | 8:08 |
| Nov | 14.0 | 6:38 | 8:40 |
| Dec | 14.5 | 6:33 | 9:06 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Arauco averages about 15 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 7 and 24 days.
The sunnier stretch runs 5.0 months, from around Nov 10 to Apr 11. The sunniest month is February, with roughly 24 sunny days (brilliant).
The greyest month is June, down near 7 sunny days — about 70% fewer than the February peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 24 | 22 | 21 | 14 | 9 | 7 | 9 | 9 | 11 | 13 | 15 | 21 |
| Sky | Brilliant | Brilliant | Bright | Mixed | Mixed | Gloomy | Mixed | Mixed | Mixed | Mixed | Bright | Bright |
| Sunny days | Sky | |
|---|---|---|
| Jan | 24 | Brilliant |
| Feb | 22 | Brilliant |
| Mar | 21 | Bright |
| Apr | 14 | Mixed |
| May | 9 | Mixed |
| Jun | 7 | Gloomy |
| Jul | 9 | Mixed |
| Aug | 9 | Mixed |
| Sep | 11 | Mixed |
| Oct | 13 | Mixed |
| Nov | 15 | Bright |
| Dec | 21 | Bright |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In Arauco, the air stays dry or comfortable essentially all year. Even in February, the muggiest month, it feels humid or worse only about 2% of the time — humidity is not something you need to plan around here.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 80 | 78 | 85 | 94 | 96 | 99 | 100 | 100 | 100 | 100 | 97 | 90 |
| Comfortable (%) | 19 | 20 | 15 | 6 | 4 | 1 | 0 | 0 | 0 | 0 | 3 | 10 |
| Humid (%) | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| Jan | 80 | 19 | 1 |
| Feb | 78 | 20 | 2 |
| Mar | 85 | 15 | 1 |
| Apr | 94 | 6 | 0 |
| May | 96 | 4 | 0 |
| Jun | 99 | 1 | 0 |
| Jul | 100 | 0 | 0 |
| Aug | 100 | 0 | 0 |
| Sep | 100 | 0 | 0 |
| Oct | 100 | 0 | 0 |
| Nov | 97 | 3 | 0 |
| Dec | 90 | 10 | 0 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Across the year, average wind speed in Arauco is typically calm, near 12 km/h, and varies little with the seasons.
The windier part of the year lasts 4.6 months, from around Oct 22 to Mar 9. The windiest month is January, averaging about 14 km/h (light breeze).
The calmer part of the year runs from around Mar 10 to Oct 21, with May the calmest month at about 10 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 14 | 13 | 11 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 13 | 14 |
| Feels | light breeze | light breeze | calm | calm | calm | calm | calm | calm | calm | calm | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 14 | light breeze |
| Feb | 13 | light breeze |
| Mar | 11 | calm |
| Apr | 10 | calm |
| May | 10 | calm |
| Jun | 11 | calm |
| Jul | 11 | calm |
| Aug | 11 | calm |
| Sep | 11 | calm |
| Oct | 11 | calm |
| Nov | 13 | light breeze |
| Dec | 14 | light breeze |
Hazard calendar for Arauco
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Arauco's rainy season runs May–August, when most of the year's rain falls.
Best time to visit Arauco
To characterize how pleasant the weather is in Arauco throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late March, Arauco is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Arauco for general outdoor tourist activities is from mid November to early April, with a peak score in the third week of January.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 9.0 | 8.9 | 8.1 | 6.4 | 4.2 | 3.0 | 2.9 | 3.5 | 4.7 | 5.8 | 7.3 | 8.2 |
| Rating | ideal | ideal | ideal | good | fair | poor | poor | poor | fair | good | good | ideal |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 9.0 | ideal |
| Feb | 8.9 | ideal |
| Mar | 8.1 | ideal |
| Apr | 6.4 | good |
| May | 4.2 | fair |
| Jun | 3.0 | poor |
| Jul | 2.9 | poor |
| Aug | 3.5 | poor |
| Sep | 4.7 | fair |
| Oct | 5.8 | good |
| Nov | 7.3 | good |
| Dec | 8.2 | ideal |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Arauco for hot-weather activities is from late December to early March, with a peak score in the last week of January.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Arauco, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around January (highs near 23°C), the essentials are light clothes and sun protection. In the cold season around July (highs near 12°C), pack a warm layer and rain gear.
In January, Arauco sees daytime highs around 23°C and nights near 12°C. Pack sun protection. Worth having: light clothes.
Sea temperature near Arauco
Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.
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 (midday) in Arauco by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
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 |
Average hourly UV index in Arauco
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in January the burn window is concentrated in the middle of the day: about 9 hours a day reach index 3 (protection recommended), and 6.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 9 | 8 | 7 | 4.5 | 0 | 0 | 0 | 2 | 5 | 7 | 8 | 9 |
| UV ≥ 6 (h/day) | 6.5 | 5.5 | 4.5 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 5.5 | 6.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 9 | 6.5 |
| Feb | 8 | 5.5 |
| Mar | 7 | 4.5 |
| Apr | 4.5 | 0 |
| May | 0 | 0 |
| Jun | 0 | 0 |
| Jul | 0 | 0 |
| Aug | 2 | 0 |
| Sep | 5 | 0 |
| Oct | 7 | 4 |
| Nov | 8 | 5.5 |
| Dec | 9 | 6.5 |
Growing season
Arauco is mild enough that a frost-free day stays more likely than not even in midwinter. Nights are reliably above freezing from about August 4 to July 14 (345 days); outside that window a hard frost is an occasional risk.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 97 | 94 | 91 | 93 | 98 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 97 | 0 |
| Jun | 94 | 0 |
| Jul | 91 | 14 |
| Aug | 93 | 0 |
| Sep | 98 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Arauco banks about 1,115 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 237 | 209 | 181 | 85 | 21 | 0 | 0 | 0 | 12 | 61 | 121 | 187 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 237 |
| Feb | 209 |
| Mar | 181 |
| Apr | 85 |
| May | 21 |
| Jun | 0 |
| Jul | 0 |
| Aug | 0 |
| Sep | 12 |
| Oct | 61 |
| Nov | 121 |
| Dec | 187 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Arauco receives about 5.1 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 1.8 and 8.7 kWh/m².
The brighter stretch of the year lasts 5.9 months, from around Sep 27 to Mar 25. The brightest month is January, averaging about 8.5 kWh/m² (intense).
The dimmest month is June, down near 1.8 kWh/m² — roughly 79% less than the January peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 8.5 | 7.4 | 5.7 | 3.8 | 2.4 | 1.8 | 2.1 | 2.9 | 4.5 | 6.1 | 7.7 | 8.5 |
| Level | Intense | Intense | Bright | Moderate | Moderate | Dim | Moderate | Moderate | Bright | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 8.5 | Intense |
| Feb | 7.4 | Intense |
| Mar | 5.7 | Bright |
| Apr | 3.8 | Moderate |
| May | 2.4 | Moderate |
| Jun | 1.8 | Dim |
| Jul | 2.1 | Moderate |
| Aug | 2.9 | Moderate |
| Sep | 4.5 | Bright |
| Oct | 6.1 | Intense |
| Nov | 7.7 | Intense |
| Dec | 8.5 | Intense |
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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).