Climate and average weather in Mirassol d'Oeste

In Mirassol d'Oeste, the weather is humid, sweltering, wet, and mostly clear and remarkably steady, with daytime highs holding near sweltering levels all year. The wettest stretch peaks around January.

Best: early May to early August

Over the course of the year, the temperature in Mirassol d'Oeste typically varies from 18°C to 34°C, and is rarely below 13°C or above 38°C. September is the hottest month of the year, while June is the coldest.

Based on the travel score, the best time of year to visit Mirassol d'Oeste for warm-weather activities is from early May to early August.

Hottest
Sep
34°
Coldest
Jun
19°
Wettest
Jan
223 mm
Driest
Jul
10 mm
Rain / yr
1296 mm
163 wet days
Daylight
11.1–12.9 h
shortest–longest
Elevation
292 m
15.7°S
Clearest
Jul
29% cloud

Mirassol d'Oeste 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 May to early August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Mirassol d'Oeste stay fairly even through the year, without a distinct hot or cool season. The warmest month is September, with an average high of 34°C and low of 23°C; the coolest is June, with an average low of 19°C and high of 30°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)
Jan3224
Feb3124
Mar3224
Apr3123
May3021
Jun3019
Jul3018
Aug3320
Sep3423
Oct3424
Nov3324
Dec3224

How hot and cold Mirassol d'Oeste 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, Mirassol d'Oeste feels like about 38°C (around October 20). About 277 days a year carry some heat stress, peaking in October.

15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan37322424
Feb36312424
Mar37322424
Apr35312323
May32302121
Jun31301919
Jul30301818
Aug33332020
Sep35342323
Oct37342424
Nov37332424
Dec37322424

Average hourly temperature in Mirassol d'Oeste

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 September afternoons, near 34°C, and coldest before dawn in June, near 19°C.

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

Mirassol d'Oeste 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
Jan32° / 24°22324.512.82.6
Feb31° / 24°20522.712.52.7
Mar32° / 24°16322.512.12.9
Apr31° / 23°9313.111.74.0
May30° / 21°466.811.35.5
Jun30° / 19°122.111.16.3
Jul30° / 18°101.411.26.3
Aug33° / 20°142.511.54.7
Sep34° / 23°467.211.93.3
Oct34° / 24°11215.512.42.7
Nov33° / 24°17319.912.72.8
Dec32° / 24°19924.412.92.6

Chance of rain

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

Mirassol d'Oeste gets about 1296 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 6.1 months, from around Oct 11 to Apr 14, peaking in February at about 83% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 31.

January is the wettest month by volume, with 223 mm over about 25 wet days; July is the driest, with 10 mm.

0%10%20%30%40%50%60%70%80%90%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetFeb 7 · 83%Jul 31 · 4%
Rain on a day (%)Rain days
Jan7925
Feb8123
Mar7223
Apr4413
May227
Jun82
Jul51
Aug83
Sep257
Oct5016
Nov6620
Dec7824

Monthly rainfall

Over a full year, Mirassol d'Oeste collects about 1296 mm of rain across 163 wet days — roughly 108 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 223 mm, while July is the driest at just 10 mm. The three wettest months alone bring about 48% of the year’s total.

050100150200250JanFebMarAprMayJunJulAugSepOctNovDec223205163934612101446112173199
Rainfall (mm)Rain days
Jan22325
Feb20523
Mar16323
Apr9313
May467
Jun122
Jul101
Aug143
Sep467
Oct11216
Nov17320
Dec19924

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Mirassol d'Oeste, 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 April 15 and lasts for 6.0 months, ending around October 14. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 82% of the time on average.

The cloudier part of the year begins around October 15 and lasts for 6.0 months, ending around April 14. The cloudiest month is January, when it is overcast or mostly cloudy 80% 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 17 · 83%Feb 14 · 18%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2080
Feb2080
Mar2971
Apr4951
May5644
Jun7228
Jul8020
Aug8218
Sep6733
Oct4555
Nov3070
Dec2575

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 12 h 54 min of light; the shortest, around May 31, only 11 h 06 min — a swing of roughly 1 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.86:377:27
Feb12.56:517:23
Mar12.16:597:05
Apr11.77:036:42
May11.37:106:27
Jun11.17:206:25
Jul11.27:236:33
Aug11.57:126:41
Sep11.96:496:44
Oct12.46:276:48
Nov12.76:157:00
Dec12.96:217:16

Sunny days

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

Mirassol d'Oeste averages about 10 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 22 days.

The sunnier stretch runs 5.7 months, from around Apr 18 to Oct 7. The sunniest month is August, with roughly 22 sunny days (bright).

The greyest month is January, down near 2 sunny days — about 90% fewer than the August peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 2222 daysJan 152 days
Sunny daysSky
Jan2Gloomy
Feb2Gloomy
Mar4Gloomy
Apr9Mixed
May13Mixed
Jun18Bright
Jul22Bright
Aug22Bright
Sep16Bright
Oct8Mixed
Nov4Gloomy
Dec3Gloomy

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 Mirassol d'Oeste, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 7.7 months, from around September 25 to May 17. 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 18 to September 24, and August is the most comfortable month — the air is dry or comfortable 40% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecAug 6 · 45%Jan 1 · 0%miserablemuggyhumidoppressivecomfortabledryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan00018019
Feb00027227
Mar00036730
Apr124126219
May371328462
Jun583242130
Jul1321412320
Aug1426332160
Sep8102136260
Oct11622683
Nov00297611
Dec00138116

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 Mirassol d'Oeste is steady company: average speeds sit near 7 km/hcalm — in every month of the year, with no meaningful windy or calm season.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeAug 7 · 8 km/hMar 14 · 6 km/h
Wind speed (km/h)Feels
Jan7calm
Feb6calm
Mar6calm
Apr6calm
May7calm
Jun8calm
Jul8calm
Aug8calm
Sep8calm
Oct7calm
Nov7calm
Dec7calm

Hazard calendar for Mirassol d'Oeste

In seasonPeak

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

Mirassol d'Oeste's monsoon runs October–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 Mirassol d'Oeste

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid May, Mirassol d'Oeste 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 Mirassol d'Oeste for general outdoor tourist activities is from early May to early August, with a peak score in the last week of June.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 29 · 6.4

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
Jan2.6poor
Feb2.7poor
Mar2.9poor
Apr4.0fair
May5.5good
Jun6.3good
Jul6.2good
Aug4.7fair
Sep3.3poor
Oct2.7poor
Nov2.7poor
Dec2.6poor

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 Mirassol d'Oeste for hot-weather activities is from late April to early September, with a peak score in the second week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 11 · 8.7

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 Mirassol d'Oeste, 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.

Mirassol d'Oeste packs about the same all year — highs hold near 34°C. Across the year the things worth having are light clothes and sun protection.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In September, Mirassol d'Oeste sees daytime highs around 34°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

UV index (midday) in Mirassol d'Oeste 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 Mirassol d'Oeste peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 15 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 22UV 15Sep 15UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep3Moderate
Oct11Extreme
Nov13Extreme
Dec14Extreme

Average hourly UV index in Mirassol d'Oeste

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
Feb8.56.5
Mar86.5
Apr7.55.5
May6.54.5
Jun63.5
Jul6.53.5
Aug74
Sep40
Oct7.55.5
Nov86.5
Dec8.57

Air quality in Mirassol d'Oeste 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 Mirassol d'Oeste is worst in September — around 64 µg/m³ PM2.5 (unhealthy), about 10.2× the cleanest month (July, 6 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateSep 1759 µg/m³Jul 106 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar9Good
Apr7Good
May7Good
Jun7Good
Jul6Good
Aug21Moderate
Sep64Unhealthy
Oct26Moderate
Nov15Moderate
Dec11Good
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Mirassol d'Oeste 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. Mirassol d'Oeste banks about 6,174 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around October.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan550
Feb491
Mar546
Apr507
May471
Jun436
Jul444
Aug505
Sep547
Oct581
Nov542
Dec555

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.

Mirassol d'Oeste receives about 5.3 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.2 and 6.0 kWh/m².

The brighter stretch of the year lasts 7.0 months, from around Aug 17 to Mar 17. The brightest month is October, averaging about 6.0 kWh/m² (bright).

The dimmest month is May, down near 4.4 kWh/m² — roughly 26% less than the October peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseOct 176.0 kWhMay 304.2 kWh
Solar energy (kWh/m²)Level
Jan5.6Bright
Feb5.4Bright
Mar5.3Bright
Apr5.0Bright
May4.4Bright
Jun4.3Bright
Jul4.6Bright
Aug5.2Bright
Sep5.7Bright
Oct6.0Intense
Nov5.8Bright
Dec5.8Bright

Where is Mirassol d'Oeste?

Mirassol d'Oeste sits at 15.7°S, 58.1°W, 292 m above sea level, in Brazil. The nearest listed city is São José dos Quatro Marcos, 11 km away.

Topography around Mirassol d'Oeste

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mirassol d'Oeste.

Within 3 km, the terrain around Mirassol d'Oeste has only modest variations in elevation — a maximum elevation change of 177 m around an average of 246 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 314 m; within 80 km, large variations in elevation — a maximum elevation change of 600 m.

The land around Mirassol d'Oeste is covered by grassland (57%) and trees (22%) within 3 km, grassland (63%) and trees (29%) within 16 km, and grassland (55%) and trees (39%) within 80 km.

3 km
177 m
16 km
314 m
80 km
600 m
treesshrubsgrasslandcroplandartificial surfaceswetland
Nearby: São José dos Quatro Marcos 11 km · Lambari d'Oeste 40 km · Cáceres 62 km · Barra do Bugres 118 km · Nova Olímpia 130 km · Tangará da Serra 134 km · Pontes e Lacerda 143 km · Poconé 170 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 Mirassol d'Oeste (-15.6757°, -58.0902°, elevation 292 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).