Climate and average weather in Cassilândia

In Cassilândia, the weather is hot, wet, and mostly clear and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around January.

Best: early May to mid August

Over the course of the year, the temperature in Cassilândia typically varies from 16°C to 32°C, and is rarely below 12°C or above 36°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 Cassilândia for warm-weather activities is from early May to mid August.

Hottest
Sep
32°
Coldest
Jun
16°
Wettest
Jan
264 mm
Driest
Jul
10 mm
Rain / yr
1445 mm
160 wet days
Daylight
10.8–13.2 h
shortest–longest
Elevation
475 m
19.1°S
Clearest
Aug
29% cloud

Cassilândia is human settlement in Brazil.

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

Cassilândia 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 mid August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Cassilândia stay fairly even through the year, without a distinct hot or cool season. The warmest month is September, with an average high of 32°C and low of 20°C; the coolest is June, with an average low of 16°C and high of 28°C.

Days typically run about 11°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)
Jan3021
Feb3021
Mar3021
Apr3020
May2817
Jun2816
Jul2816
Aug3017
Sep3220
Oct3221
Nov3121
Dec3021

How hot and cold Cassilândia 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, Cassilândia feels like about 33°C (around March 6). About 184 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)
Jan33302121
Feb33302121
Mar33302121
Apr31302020
May28281717
Jun28281616
Jul28281616
Aug30301717
Sep32322020
Oct33322121
Nov32312121
Dec33302121

Average hourly temperature in Cassilândia

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 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

Cassilândia 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
Jan30° / 21°26424.6133.2
Feb30° / 21°21521.712.63.2
Mar30° / 21°20022.112.13.6
Apr30° / 20°7811.111.65.1
May28° / 17°385.311.17.1
Jun28° / 16°122.110.97.9
Jul28° / 16°101.5117.7
Aug30° / 17°172.411.46.2
Sep32° / 20°607.711.94.5
Oct32° / 21°12516.412.43.6
Nov31° / 21°18820.112.93.4
Dec30° / 21°23724.513.13.2

Chance of rain

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

Cassilândia gets about 1445 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 6.3 months, from around Oct 2 to Apr 11, peaking in January at about 80% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 2.

January is the wettest month by volume, with 264 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 wetJan 8 · 80%Jul 2 · 4%
Rain on a day (%)Rain days
Jan7925
Feb7722
Mar7022
Apr3811
May175
Jun72
Jul52
Aug82
Sep268
Oct5216
Nov6720
Dec7925

Monthly rainfall

Over a full year, Cassilândia collects about 1445 mm of rain across 160 wet days — roughly 120 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 264 mm, while July is the driest at just 10 mm. The three wettest months alone bring about 50% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec264215200783812101760125188237
Rainfall (mm)Rain days
Jan26425
Feb21522
Mar20022
Apr7811
May385
Jun122
Jul102
Aug172
Sep608
Oct12516
Nov18820
Dec23725

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Cassilândia, 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 2 and lasts for 6.0 months, ending around October 1. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 81% of the time on average.

The cloudier part of the year begins around October 2 and lasts for 6.0 months, ending around April 1. The cloudiest month is January, 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%JanFebMarAprMayJunJulAugSepOctNovDecAug 19 · 83%Jan 8 · 20%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2377
Feb2971
Mar4357
Apr6040
May6535
Jun7327
Jul7921
Aug8119
Sep6733
Oct4456
Nov3268
Dec2377

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 19, brings about 13 h 12 min of light; the shortest, around June 20, only 10 h 48 min — a swing of roughly 2 h 24 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan13.06:057:07
Feb12.66:227:01
Mar12.16:336:41
Apr11.66:406:14
May11.16:505:56
Jun10.97:015:53
Jul11.07:046:01
Aug11.46:516:11
Sep11.96:246:18
Oct12.45:596:25
Nov12.95:456:40
Dec13.15:496:57

Sunny days

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

Cassilândia averages about 11 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 21 days.

The sunnier stretch runs 5.7 months, from around Apr 10 to Sep 30. The sunniest month is August, with roughly 21 sunny days (bright).

The greyest month is January, down near 3 sunny days — about 87% fewer than the August peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 1721 daysJan 42 days
Sunny daysSky
Jan3Gloomy
Feb4Gloomy
Mar7Gloomy
Apr12Mixed
May15Mixed
Jun18Bright
Jul21Bright
Aug21Bright
Sep16Bright
Oct8Mixed
Nov5Gloomy
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 Cassilândia, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 7.1 months, from around October 2 to May 5. 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 6 to October 1, and July is the most comfortable month — the air is dry or comfortable 91% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 25 · 92%Jan 1 · 0%oppressivehumidcomfortablemuggydryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan0034552
Feb0034452
Mar0144848
Apr28215019
May132640201
Jun28442540
Jul6031900
Aug68191020
Sep362122201
Oct611215210
Nov14125924
Dec0135045

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 Cassilândia 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 18 · 9 km/hMar 8 · 6 km/h
Wind speed (km/h)Feels
Jan7calm
Feb6calm
Mar6calm
Apr7calm
May7calm
Jun8calm
Jul8calm
Aug9calm
Sep9calm
Oct8calm
Nov7calm
Dec7calm

Hazard calendar for Cassilândia

In seasonPeak

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

Cassilândia'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 Cassilândia

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid May, Cassilândia 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 Cassilândia for general outdoor tourist activities is from early May to mid August, with a peak score in the first week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 4 · 8.1

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
Jan3.2poor
Feb3.2poor
Mar3.6fair
Apr5.1fair
May7.0good
Jun7.9ideal
Jul7.7ideal
Aug6.2good
Sep4.5fair
Oct3.6fair
Nov3.4poor
Dec3.2poor

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 Cassilândia for hot-weather activities is from late April to mid September, with a peak score in the last week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 31 · 8.8

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 Cassilândia, 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.

Cassilândia packs about the same all year — highs hold near 32°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, Cassilândia sees daytime highs around 32°C and nights near 20°C. Pack light clothes. Worth having: sun protection. About 8 days see rain.

UV index (midday) in Cassilândia 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 Cassilândia peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeJan 24UV 15Jun 21UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May8Very high
Jun7High
Jul7Very high
Aug9Very high
Sep9Very high
Oct10Extreme
Nov13Extreme
Dec14Extreme

Average hourly UV index in Cassilândia

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
Apr7.55.5
May6.53.5
Jun63
Jul63
Aug74.5
Sep74.5
Oct85.5
Nov8.56.5
Dec8.56.5

Air quality in Cassilândia 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 Cassilândia is worst in September — around 18 µg/m³ PM2.5 (moderate), about 4.8× the cleanest month (July, 4 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1817 µg/m³Jul 114 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar6Good
Apr5Good
May6Good
Jun4Good
Jul4Good
Aug7Good
Sep18Moderate
Oct11Good
Nov5Good
Dec6Good
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Cassilândia 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. Cassilândia banks about 5,326 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around October.

02,0004,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan489
Feb443
Mar483
Apr441
May387
Jun357
Jul370
Aug424
Sep469
Oct501
Nov474
Dec489

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.

Cassilândia receives about 5.3 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.1 and 6.1 kWh/m².

The brighter stretch of the year lasts 6.9 months, from around Aug 21 to Mar 18. The brightest month is October, averaging about 6.1 kWh/m² (intense).

The dimmest month is June, down near 4.1 kWh/m² — roughly 32% less than the October peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseOct 176.1 kWhJun 114.1 kWh
Solar energy (kWh/m²)Level
Jan5.7Bright
Feb5.7Bright
Mar5.4Bright
Apr5.1Bright
May4.5Bright
Jun4.1Bright
Jul4.4Bright
Aug5.2Bright
Sep5.8Bright
Oct6.1Intense
Nov6.0Intense
Dec5.8Bright

Where is Cassilândia?

Cassilândia sits at 19.1°S, 51.7°W, 475 m above sea level, in Brazil. The nearest listed city is Paranaíba, 85 km away.

Topography around Cassilândia

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

Within 3 km, the terrain around Cassilândia has only modest variations in elevation — a maximum elevation change of 172 m around an average of 484 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 370 m; within 80 km, significant variations in elevation — a maximum elevation change of 492 m.

The land around Cassilândia is covered by grassland (42%) and trees (25%) within 3 km, grassland (48%) and trees (31%) within 16 km, and grassland (44%), cropland (31%) and trees (22%) within 80 km.

3 km
172 m
16 km
370 m
80 km
492 m
treesshrubsgrasslandcroplandartificial surfaceswater
Nearby: Paranaíba 85 km · Chapadão do Sul 100 km · São Simão 126 km · Aparecida do Taboado 127 km · Jataí 137 km · Santa Fé do Sul 149 km · Ilha Solteira 152 km · Quirinópolis 154 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 Cassilândia (-19.1133°, -51.7342°, elevation 475 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).