Climate and average weather in Vallenar

In Vallenar, the summers are warm, dry, and clear and the winters are mild and clear.

Best: early January to late December

Over the course of the year, the temperature in Vallenar typically varies from 6°C to 26°C, and is rarely below 2°C or above 28°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 Vallenar for warm-weather activities is from early January to late December.

Hottest
Jan
26°
Coldest
Jul
Wettest
Jun
13 mm
Driest
Jan
0 mm
Rain / yr
48 mm
6 wet days
Daylight
10.2–13.8 h
shortest–longest
Elevation
388 m
28.6°S
Clearest
Feb
7% cloud

Vallenar is city in Chile.

Density
3,560/km²
people per km²
Founded
1789

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Vallenar 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 early January to late December.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Vallenar, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

Temperatures in Vallenar stay fairly even through the year, without a distinct hot or cool season. The warmest month is January, with an average high of 26°C and low of 16°C; the coolest is July, with an average low of 6°C and high of 19°C.

Days typically run about 12°C warmer than nights year-round.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2616
Feb2615
Mar2514
Apr2312
May219
Jun197
Jul196
Aug207
Sep219
Oct2311
Nov2413
Dec2514

Average hourly temperature in Vallenar

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 26°C, and coldest before dawn in July, near C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Vallenar weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 16°0013.69.2
Feb26° / 15°00139.3
Mar25° / 14°40.212.29.5
Apr23° / 12°20.411.39.3
May21° / 8110.68.3
Jun19° / 131.410.27.9
Jul19° / 91.410.48.0
Aug20° / 90.8118.3
Sep21° / 10.411.88.8
Oct23° / 11°10.212.79.2
Nov24° / 13°0013.49.7
Dec25° / 14°0013.89.5

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Vallenar gets about 48 mm of precipitation a year. On a typical day the chance of rain is mostly dry, and that barely changes with the seasons — rain is spread fairly evenly through the year.

June is the wettest month by volume, with 13 mm over about 1 wet days; January is the driest, with 0 mm.

0%10%20%JanFebMarAprMayJunJulAugSepOctNovDecmostly drysome rainJun 7 · 5%Jan 1 · 0%
Rain on a day (%)Rain days
Jan00
Feb00
Mar10
Apr10
May31
Jun51
Jul41
Aug31
Sep10
Oct10
Nov00
Dec00

Monthly rainfall

Over a full year, Vallenar collects about 48 mm of rain across 6 wet days — roughly 4 mm in an average month.

It doesn’t fall evenly. June is the wettest month with 13 mm, while January is the driest at just 0 mm. The three wettest months alone bring about 65% of the year’s total.

025JanFebMarAprMayJunJulAugSepOctNovDec42813991100
Rainfall (mm)Rain days
Jan00
Feb00
Mar40
Apr20
May81
Jun131
Jul91
Aug91
Sep10
Oct10
Nov00
Dec00

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Vallenar, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.

The clearer part of the year begins around October 3 and lasts for 6.6 months, ending around April 20. The clearest month is February, when the sky is clear, mostly clear, or partly cloudy 97% of the time on average.

The cloudier part of the year begins around April 21 and lasts for 5.4 months, ending around October 2. The cloudiest month is June, when it is overcast or mostly cloudy 27% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecJan 27 · 98%Jun 13 · 71%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan964
Feb973
Mar964
Apr9010
May7723
Jun7327
Jul8020
Aug8416
Sep8713
Oct919
Nov955
Dec964

Daylight, sunrise and sunset

DaylightNight

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 January 1, brings about 13 h 48 min of light; the shortest, around June 8, only 10 h 12 min — a swing of roughly 3 h 36 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan13.67:038:41
Feb13.07:278:28
Mar12.27:467:59
Apr11.38:047:23
May10.68:226:57
Jun10.28:386:49
Jul10.48:386:59
Aug11.08:187:16
Sep11.87:427:32
Oct12.77:077:49
Nov13.46:458:12
Dec13.86:458:34

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Vallenar averages about 25 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 18 and 29 days.

The sunnier stretch runs 6.3 months, from around Oct 11 to Apr 21. The sunniest month is February, with roughly 29 sunny days (brilliant).

The greyest month is May, down near 20 sunny days — about 30% fewer than the February peak.

05101520253035JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightbrilliantFeb 829 daysMay 2818 days
Sunny daysSky
Jan29Brilliant
Feb27Brilliant
Mar29Brilliant
Apr25Brilliant
May21Bright
Jun19Bright
Jul22Bright
Aug23Bright
Sep24Brilliant
Oct26Brilliant
Nov27Brilliant
Dec29Brilliant

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

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 Vallenar, the air stays dry or comfortable essentially all year. Even in January, the muggiest month, it feels humid or worse only about 0% of the time — humidity is not something you need to plan around here.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDeccomfortabledry
Dry (%)Comfortable (%)
Jan7921
Feb7426
Mar8812
Apr991
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov1000
Dec955

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.

Wind in Vallenar is steady company: average speeds sit near 6 km/hcalm — in every month of the year, with no meaningful windy or calm season.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeJan 1 · 7 km/hMay 11 · 5 km/h
Wind speed (km/h)Feels
Jan7calm
Feb7calm
Mar6calm
Apr6calm
May5calm
Jun5calm
Jul6calm
Aug6calm
Sep6calm
Oct7calm
Nov7calm
Dec7calm

Best time to visit Vallenar

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Vallenar throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around mid January, Vallenar is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.

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, Vallenar suits general outdoor tourist activities for most of the year, with a peak score in the third week of November.

0246810JanFebMarAprMayJunJulAugSepOctNovDectravel scoretemperaturecloudsprecipitationNov 15 · 9.7

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).

Travel score (0–10)Rating
Jan9.2ideal
Feb9.3ideal
Mar9.5ideal
Apr9.3ideal
May8.3ideal
Jun7.9ideal
Jul8.0ideal
Aug8.3ideal
Sep8.8ideal
Oct9.2ideal
Nov9.7ideal
Dec9.5ideal

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 Vallenar for hot-weather activities is from late October to mid April, with a peak score in the last week of January.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationJan 30 · 8.9

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 Vallenar, by month

EssentialRecommendedOptional

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 26°C), the essentials are light clothes and sun protection. In the cold season around July (highs near 19°C), pack a warm layer.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In January, Vallenar sees daytime highs around 26°C and nights near 16°C. Pack sun protection. Worth having: light clothes.

Sea temperature near Vallenar

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 60 km away) is warmest in February at about 18°C and coldest in August near 14°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

12°14°16°18°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan18Cool
Feb18Cool
Mar18Cool
Apr17Cool
May16Cool
Jun15Bracing
Jul14Bracing
Aug14Bracing
Sep14Bracing
Oct14Bracing
Nov15Bracing
Dec16Cool

UV index (midday) in Vallenar by month

LowModerateHighVery highExtreme

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 Vallenar peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeHighModerateHighVery highExtremeJan 22UV 15Jun 19UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr7High
May5Moderate
Jun4Moderate
Jul4Moderate
Aug6High
Sep8Very high
Oct12Extreme
Nov12Extreme
Dec13Extreme

Average hourly UV index in Vallenar

LowModerateHighVery highExtreme

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 7 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan97
Feb97
Mar86
Apr63
May4.50
Jun3.50
Jul40
Aug5.51.5
Sep74
Oct86
Nov8.56.5
Dec97
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Vallenar is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul990
Aug1000
Sep1000
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)Frost-free shaded

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. Vallenar banks about 2,473 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.

01,0002,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan339
Feb304
Mar299
Apr217
May146
Jun85
Jul69
Aug103
Sep150
Oct208
Nov250
Dec301

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.

Vallenar receives about 6.6 kWh/m² a day of solar energy on average — intense — with a clear seasonal swing between 3.7 and 9.2 kWh/m².

The brighter stretch of the year lasts 6.2 months, from around Sep 18 to Mar 25. The brightest month is December, averaging about 9.2 kWh/m² (intense).

The dimmest month is June, down near 3.7 kWh/m² — roughly 60% less than the December peak.

012345678910JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 159.2 kWhJun 183.7 kWh
Solar energy (kWh/m²)Level
Jan8.9Intense
Feb8.2Intense
Mar7.0Intense
Apr5.6Bright
May4.2Bright
Jun3.7Moderate
Jul4.0Bright
Aug5.0Bright
Sep6.5Intense
Oct7.8Intense
Nov8.8Intense
Dec9.2Intense

Where is Vallenar?

Vallenar sits at 28.6°S, 70.8°W, 388 m above sea level, in Chile. The nearest listed city is Copiapó, 141 km away.

ChilecitoIllapel

Topography around Vallenar

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Vallenar.

Within 3 km, the terrain around Vallenar has only modest variations in elevation — a maximum elevation change of 210 m around an average of 468 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,150 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,526 m.

The land around Vallenar is covered by bare terrain (55%) and artificial surfaces (23%) within 3 km, bare terrain (84%) within 16 km, and bare terrain (69%) within 80 km.

3 km
210 m
16 km
1,150 m
80 km
4,526 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Copiapó 141 km · La Serena 155 km · Vicuña 162 km · Coquimbo 163 km · Caldera 168 km · Ovalle 229 km · Chilecito 324 km · Illapel 342 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
Catholic 57%none 26%Evangelical or Protestant 16%other Christians and traditions related to Christ 1%

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 Vallenar (-28.5762°, -70.7594°, elevation 388 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).