Climate and average weather in Valparaíso

In Valparaíso, the weather is humid, hot, wet, and partly cloudy and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around January.

Best: late April to mid August

Over the course of the year, the temperature in Valparaíso typically varies from 16°C to 32°C, and is rarely below 11°C or above 37°C. October is the hottest month of the year, while June is the coldest.

Based on the travel score, the best time of year to visit Valparaíso for warm-weather activities is from late April to mid August.

Hottest
Oct
32°
Coldest
Jun
16°
Wettest
Jan
261 mm
Driest
Jul
19 mm
Rain / yr
1314 mm
140 wet days
Daylight
10.7–13.3 h
shortest–longest
Elevation
443 m
21.2°S
Clearest
Aug
30% cloud

Valparaíso is settlement in Valparaíso, São Paulo, Brazil.

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

Valparaíso 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 late April to mid August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Valparaíso stay fairly even through the year, without a distinct hot or cool season. The warmest month is October, with an average high of 32°C and low of 21°C; the coolest is June, with an average low of 16°C and high of 27°C.

Days typically run about 10°C warmer than nights, with the widest day–night swing (around 13°C) in August.

10°15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3122
Feb3122
Mar3122
Apr3020
May2717
Jun2716
Jul2716
Aug3017
Sep3119
Oct3221
Nov3121
Dec3122

How hot and cold Valparaíso really feels

Feels-like highFeels-like lowactual air temp

The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.

On the hottest afternoons, once humidity is folded in, Valparaíso feels like about 34°C (around March 2). About 181 days a year carry some heat stress, peaking in March.

15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan34312222
Feb34312222
Mar33312222
Apr31302020
May27271717
Jun27271616
Jul27271616
Aug30301717
Sep31311919
Oct32322121
Nov33312121
Dec34312222

Average hourly temperature in Valparaíso

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 October afternoons, near 32°C, and coldest before dawn in June, near 16°C.

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

Valparaíso 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
Jan31° / 22°26122.513.13.3
Feb31° / 22°19019.512.73.4
Mar31° / 22°15518.712.23.9
Apr30° / 20°65811.55.5
May27° / 17°506.2117.2
Jun27° / 16°313.610.77.8
Jul27° / 16°192.510.87.9
Aug30° / 17°22311.36.4
Sep31° / 19°647.411.94.9
Oct32° / 21°11012.412.54.0
Nov31° / 21°15515.5133.7
Dec31° / 22°19320.813.33.3

Chance of rain

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

Valparaíso gets about 1314 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 5.6 months, from around Oct 15 to Apr 3, peaking in January at about 73% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 28.

January is the wettest month by volume, with 261 mm over about 23 wet days; July is the driest, with 19 mm.

0%10%20%30%40%50%60%70%80%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetJan 7 · 73%Jul 28 · 8%
Rain on a day (%)Rain days
Jan7223
Feb7020
Mar5919
Apr288
May206
Jun124
Jul93
Aug103
Sep257
Oct4012
Nov5216
Dec6721

Monthly rainfall

Over a full year, Valparaíso collects about 1314 mm of rain across 140 wet days — roughly 109 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 261 mm, while July is the driest at just 19 mm. The three wettest months alone bring about 49% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec261190155655031192264110155193
Rainfall (mm)Rain days
Jan26123
Feb19020
Mar15519
Apr658
May506
Jun314
Jul193
Aug223
Sep647
Oct11012
Nov15516
Dec19321

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Valparaíso, 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 March 28 and lasts for 6.2 months, ending around October 3. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 78% of the time on average.

The cloudier part of the year begins around October 4 and lasts for 5.7 months, ending around March 27. The cloudiest month is January, when it is overcast or mostly cloudy 71% 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%JanFebMarAprMayJunJulAugSepOctNovDecAug 24 · 80%Jan 11 · 26%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2971
Feb3763
Mar5050
Apr6436
May6139
Jun6832
Jul7426
Aug7822
Sep6634
Oct4852
Nov4159
Dec3466

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 18 min of light; the shortest, around June 9, only 10 h 42 min — a swing of roughly 2 h 36 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan13.16:588:08
Feb12.77:168:00
Mar12.27:297:38
Apr11.57:387:09
May11.07:506:49
Jun10.78:026:45
Jul10.88:046:54
Aug11.37:507:06
Sep11.97:217:14
Oct12.56:547:23
Nov13.06:387:40
Dec13.36:417:58

Sunny days

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

Valparaíso averages about 12 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 4 and 21 days.

The sunnier stretch runs 6.1 months, from around Apr 2 to Oct 4. The sunniest month is August, with roughly 20 sunny days (bright).

The greyest month is January, down near 5 sunny days — about 76% fewer than the August peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 2321 daysJan 74 days
Sunny daysSky
Jan5Gloomy
Feb5Gloomy
Mar10Mixed
Apr14Mixed
May16Bright
Jun17Bright
Jul20Bright
Aug21Bright
Sep17Bright
Oct10Mixed
Nov8Gloomy
Dec6Gloomy

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 Valparaíso, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 6.9 months, from around October 7 to May 3. The muggiest month is January, when the air feels humid, muggy or worse about 100% of the time.

The most comfortable stretch runs from around May 4 to October 6, and July is the most comfortable month — the air is dry or comfortable 84% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 29 · 90%Jan 1 · 0%oppressivemuggyhumidcomfortabledryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan00324711
Feb00422741
Mar01631610
Apr3102539220
May1627372010
Jun224130800
Jul493515100
Aug612511200
Sep3425231710
Oct7162440130
Nov291939310
Dec01830600

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 Valparaíso is typically calm, near 9 km/h, and varies little with the seasons.

The windier part of the year lasts 5.6 months, from around Jun 8 to Nov 24. The windiest month is August, averaging about 11 km/h (calm).

The calmer part of the year runs from around Nov 25 to Jun 7, with February the calmest month at about 8 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeAug 17 · 11 km/hFeb 25 · 7 km/h
Wind speed (km/h)Feels
Jan8calm
Feb8calm
Mar8calm
Apr8calm
May9calm
Jun9calm
Jul10calm
Aug11calm
Sep11calm
Oct10calm
Nov9calm
Dec8calm

Hazard calendar for Valparaíso

In seasonPeak

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

Valparaíso's monsoon runs November–March, when most of the year's rain falls.

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

Best time to visit Valparaíso

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around early May, Valparaíso 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, the best time of year to visit Valparaíso for general outdoor tourist activities is from late April to mid August, with a peak score in the first week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 7 · 8.0

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
Jan3.3poor
Feb3.4poor
Mar3.9fair
Apr5.5fair
May7.2good
Jun7.8ideal
Jul7.9ideal
Aug6.4good
Sep4.9fair
Oct4.0fair
Nov3.7fair
Dec3.4poor

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 Valparaíso for hot-weather activities is from mid April to late September, with a peak score in the first week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 7 · 8.6

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 Valparaíso, 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.

Valparaíso packs about the same all year — highs hold near 32°C. Across the year the things worth having are light clothes, rain gear and sun protection.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In October, Valparaíso sees daytime highs around 32°C and nights near 21°C. Pack light clothes and sun protection. Worth having: rain gear. About 12 days see rain.

UV index (midday) in Valparaíso 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 Valparaíso peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 22UV 15Jul 10UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul6High
Aug8Very high
Sep8Very high
Oct10Extreme
Nov12Extreme
Dec13Extreme

Average hourly UV index in Valparaíso

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
Feb8.57
Mar86
Apr75
May63.5
Jun5.52
Jul62
Aug6.54
Sep74.5
Oct7.55.5
Nov8.56.5
Dec8.56.5

Air quality in Valparaíso by month

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.

Air quality in Valparaíso is worst in September — around 20 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (November, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1719 µg/m³Nov 236 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar7Good
Apr7Good
May8Good
Jun7Good
Jul7Good
Aug11Good
Sep20Moderate
Oct13Moderate
Nov6Good
Dec7Good
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Valparaíso 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
Jul1000
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. Valparaíso banks about 5,379 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around December.

02,0004,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan511
Feb461
Mar500
Apr448
May378
Jun347
Jul360
Aug418
Sep454
Oct499
Nov488
Dec514

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.

Valparaíso receives about 5.2 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.8 and 6.2 kWh/m².

The brighter stretch of the year lasts 6.9 months, from around Aug 26 to Mar 24. The brightest month is November, averaging about 6.1 kWh/m² (intense).

The dimmest month is June, down near 3.8 kWh/m² — roughly 38% less than the November peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseNov 206.2 kWhJun 203.8 kWh
Solar energy (kWh/m²)Level
Jan5.7Bright
Feb5.7Bright
Mar5.4Bright
Apr5.0Bright
May4.2Bright
Jun3.8Moderate
Jul4.1Bright
Aug4.9Bright
Sep5.7Bright
Oct6.0Intense
Nov6.2Intense
Dec6.0Intense

Where is Valparaíso?

Valparaíso sits at 21.2°S, 50.9°W, 443 m above sea level, in Brazil. The nearest listed city is Guararapes, 24 km away.

Topography around Valparaíso

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

Within 3 km, the terrain around Valparaíso has only modest variations in elevation — a maximum elevation change of 97 m around an average of 427 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 154 m; within 80 km, significant variations in elevation — a maximum elevation change of 269 m.

The land around Valparaíso is covered by cropland (38%) and grassland (37%) within 3 km, cropland (60%) and grassland (26%) within 16 km, and cropland (51%) and grassland (34%) within 80 km.

3 km
97 m
16 km
154 m
80 km
269 m
treesgrasslandcroplandartificial surfaceswater
Nearby: Guararapes 24 km · Mirandópolis 26 km · Araçatuba 45 km · Adamantina 55 km · Birigui 55 km · Lucélia 57 km · Osvaldo Cruz 63 km · Andradina 65 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

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 Valparaíso (-21.2278°, -50.8683°, elevation 443 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).