Climate and average weather in Río Bueno

In Río Bueno, the summers are warm, fairly dry, and mostly clear and the winters are cool and mostly cloudy.

Best: early January to late March

Over the course of the year, the temperature in Río Bueno typically varies from 4°C to 22°C, and is rarely below -2°C or above 28°C. February is the hottest month of the year, while July is the coldest.

Based on the travel score, the best times of year to visit Río Bueno for warm-weather activities are from early January to late March and early December to late December.

Hottest
Feb
22°
Coldest
Jul
Wettest
Jun
254 mm
Driest
Jan
36 mm
Rain / yr
1502 mm
143 wet days
Daylight
9.1–14.9 h
shortest–longest
Elevation
61 m
40.3°S
Clearest
Feb
44% cloud

Río Bueno is city in Chile.

Density
5,316/km²
people per km²
Founded
1778

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

Río Bueno 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 March.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

The hot season lasts 3.4 months, from December 9 to March 20, with daily high temperatures above 19°C. The hottest month of the year in Río Bueno is February, with an average high of 22°C and low of 10°C.

The cool season lasts 3.6 months, from May 20 to September 6, with daily high temperatures below 13°C. The coldest month of the year in Río Bueno is July, with an average low of 4°C and high of 10°C.

Days typically run about 9°C warmer than nights, with the widest day–night swing (around 12°C) in February.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2210
Feb2210
Mar209
Apr167
May136
Jun114
Jul104
Aug114
Sep135
Oct156
Nov178
Dec209

Average hourly temperature in Río Bueno

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 February afternoons, near 22°C, and coldest before dawn in July, near C.

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

Río Bueno 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
Jan22° / 10°36614.57.5
Feb22° / 10°415.113.67.6
Mar20° / 637.612.36.7
Apr16° / 10910.6114.9
May13° / 18915.49.83.1
Jun11° / 25418.39.22.0
Jul10° / 22917.89.41.9
Aug11° / 21017.810.42.3
Sep13° / 12513.511.73.4
Oct15° / 11013.413.14.3
Nov17° / 749.914.25.5
Dec20° / 64814.86.6

Chance of rain

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

Río Bueno gets about 1502 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.

The wetter season lasts 6.2 months, from around Apr 28 to Nov 2, peaking in June at about 60% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Feb 13.

June is the wettest month by volume, with 254 mm over about 18 wet days; January is the driest, with 36 mm.

0%10%20%30%40%50%60%70%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetJun 21 · 60%Feb 13 · 18%
Rain on a day (%)Rain days
Jan206
Feb185
Mar258
Apr3511
May5015
Jun6018
Jul5818
Aug5618
Sep4614
Oct4213
Nov3310
Dec258

Monthly rainfall

Over a full year, Río Bueno collects about 1502 mm of rain across 143 wet days — roughly 125 mm in an average month.

It doesn’t fall evenly. June is the wettest month with 254 mm, while January is the driest at just 36 mm. The three wettest months alone bring about 46% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec3641631091892542292101251107464
Rainfall (mm)Rain days
Jan366
Feb415
Mar638
Apr10911
May18915
Jun25418
Jul22918
Aug21018
Sep12514
Oct11013
Nov7410
Dec648

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Río Bueno, 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 November 28 and lasts for 4.6 months, ending around April 15. The clearest month is February, when the sky is clear, mostly clear, or partly cloudy 65% of the time on average.

The cloudier part of the year begins around April 16 and lasts for 7.4 months, ending around November 27. The cloudiest month is June, when it is overcast or mostly cloudy 77% 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%JanFebMarAprMayJunJulAugSepOctNovDecFeb 7 · 67%Jun 24 · 22%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan6238
Feb6535
Mar5446
Apr4060
May2773
Jun2377
Jul2674
Aug2773
Sep3367
Oct3268
Nov3565
Dec4852

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 December 15, brings about 14 h 54 min of light; the shortest, around June 15, only 9 h 06 min — a swing of roughly 5 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan14.56:449:18
Feb13.67:198:54
Mar12.37:528:11
Apr11.08:247:20
May9.88:556:41
Jun9.29:186:26
Jul9.49:166:39
Aug10.48:447:08
Sep11.77:547:38
Oct13.17:048:10
Nov14.26:298:45
Dec14.86:229:14

Sunny days

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

Río Bueno averages about 7 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 3 and 15 days.

The sunnier stretch runs 4.3 months, from around Dec 1 to Apr 11. The sunniest month is February, with roughly 14 sunny days (mixed).

The greyest month is June, down near 3 sunny days — about 80% fewer than the February peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightFeb 515 daysJun 283 days
Sunny daysSky
Jan13Mixed
Feb13Mixed
Mar11Mixed
Apr6Gloomy
May4Gloomy
Jun3Gloomy
Jul3Gloomy
Aug4Gloomy
Sep4Gloomy
Oct5Gloomy
Nov5Gloomy
Dec9Mixed

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 Río Bueno, the air stays dry or comfortable essentially all year. Even in February, the muggiest month, it feels humid or worse only about 1% 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 (%)Humid (%)
Jan89110
Feb87121
Mar9190
Apr9730
May9910
Jun10000
Jul10000
Aug10000
Sep10000
Oct10000
Nov9910
Dec9550

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 Río Bueno is steady company: average speeds sit near 10 km/hcalm — in every month of the year, with no meaningful windy or calm season.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeJan 12 · 12 km/hApr 29 · 9 km/h
Wind speed (km/h)Feels
Jan11calm
Feb11calm
Mar10calm
Apr9calm
May10calm
Jun10calm
Jul10calm
Aug10calm
Sep10calm
Oct10calm
Nov10calm
Dec11calm

Hazard calendar for Río Bueno

In seasonPeak

When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.

Río Bueno's rainy season runs May–September, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Best time to visit Río Bueno

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around late March, Río Bueno 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 Río Bueno for general outdoor tourist activities is from early December to late March, with a peak score in the second week of February.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationFeb 10 · 7.8

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
Jan7.5good
Feb7.6ideal
Mar6.7good
Apr4.9fair
May3.1poor
Jun2.0poor
Jul1.9poor
Aug2.3poor
Sep3.4poor
Oct4.3fair
Nov5.5good
Dec6.6good

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 Río Bueno for hot-weather activities is from early January to early March, with a peak score in the first week of February.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationFeb 7 · 5.7

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 Río Bueno, 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 February (highs near 22°C), the essentials are light clothes and sun protection. In the cold season around July (highs near 10°C), pack a warm layer and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In February, Río Bueno sees daytime highs around 22°C and nights near 10°C. Pack sun protection. Worth having: light clothes. About 5 days see rain.

UV index (midday) in Río Bueno 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 Río Bueno peaks around December 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateLowModerateVery highExtremeDec 20UV 12Jun 18UV 2
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar7Very high
Apr4Moderate
May2Moderate
Jun2Low
Jul2Low
Aug3Moderate
Sep4Moderate
Oct7Very high
Nov9Very high
Dec12Extreme

Average hourly UV index in Río Bueno

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 December 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)
Jan96.5
Feb8.56
Mar6.53.5
Apr40
May00
Jun00
Jul00
Aug00
Sep4.50
Oct73
Nov85
Dec97
Almanac & agriculture

Growing season

Chance of a frost-free dayReliably frost-free (≥90%)

Río Bueno is mild enough that a frost-free day stays more likely than not even in midwinter. Nights are reliably above freezing from about September 14 to May 22 (251 days); outside that window a hard frost is an occasional risk.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecreliably frost-freereliably frost-freeSep 1490%May 2290%
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr980
May9311
Jun8530
Jul8131
Aug8431
Sep9113
Oct980
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. Río Bueno banks about 773 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around February.

02004006008001,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan190
Feb175
Mar135
Apr41
May2
Jun0
Jul0
Aug0
Sep0
Oct19
Nov74
Dec138

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.

Río Bueno receives about 4.0 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 1.3 and 7.2 kWh/m².

The brighter stretch of the year lasts 5.8 months, from around Sep 28 to Mar 24. The brightest month is January, averaging about 7.1 kWh/m² (intense).

The dimmest month is June, down near 1.3 kWh/m² — roughly 81% less than the January peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseJan 127.2 kWhJun 231.3 kWh
Solar energy (kWh/m²)Level
Jan7.1Intense
Feb6.1Intense
Mar4.5Bright
Apr2.9Moderate
May1.8Dim
Jun1.3Dim
Jul1.5Dim
Aug2.2Moderate
Sep3.5Moderate
Oct4.8Bright
Nov5.9Bright
Dec6.9Intense

Where is Río Bueno?

Río Bueno sits at 40.3°S, 73.0°W, 61 m above sea level, in Chile. The nearest listed city is La Unión, 12 km away.

Topography around Río Bueno

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

Within 3 km, the terrain around Río Bueno has only modest variations in elevation — a maximum elevation change of 75 m around an average of 55 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 328 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,198 m.

The land around Río Bueno is covered by grassland (36%), cropland (29%) and trees (23%) within 3 km, cropland (39%), grassland (38%) and trees (22%) within 16 km, and trees (55%) and grassland (22%) within 80 km.

3 km
75 m
16 km
328 m
80 km
2,198 m
treesgrasslandcroplandartificial surfacesbare terrainwater
Nearby: La Unión 12 km · Paillaco 30 km · Osorno 31 km · Las Animas 63 km · Valdivia 63 km · Purranque 67 km · Frutillar 88 km · Panguipulli 93 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 Río Bueno (-40.3349°, -72.9556°, elevation 61 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. 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).