Climate and average weather in Jataí

In Jataí, 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: late April to mid August

Over the course of the year, the temperature in Jataí typically varies from 15°C to 31°C, and is rarely below 12°C or above 35°C. September is the hottest month of the year, while May is the coldest.

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

Hottest
Sep
31°
Coldest
May
16°
Wettest
Jan
243 mm
Driest
Jul
6 mm
Rain / yr
1464 mm
174 wet days
Daylight
10.9–13.1 h
shortest–longest
Elevation
741 m
17.9°S
Clearest
Jul
29% cloud

Jataí is human settlement in Brazil.

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

Jataí 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 Jataí, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

Temperatures in Jataí stay fairly even through the year, without a distinct hot or cool season. The warmest month is September, with an average high of 31°C and low of 19°C; the coolest is May, 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 14°C) in August.

10°15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2920
Feb2920
Mar2920
Apr2919
May2816
Jun2815
Jul2815
Aug3016
Sep3119
Oct3120
Nov2920
Dec2920

Average hourly temperature in Jataí

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 31°C, and coldest before dawn in May, near 16°C.

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

Jataí 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
Jan29° / 20°24325.5133.5
Feb29° / 20°21223.312.63.4
Mar29° / 20°21625.112.13.5
Apr29° / 19°9413.211.65.2
May28° / 16°325.311.27.2
Jun28° / 15°111.510.98.1
Jul28° / 15°61.1117.9
Aug30° / 16°132.111.46.4
Sep31° / 19°608.411.94.7
Oct31° / 20°14318.912.43.7
Nov29° / 20°2032312.83.6
Dec29° / 20°23226.313.13.4

Chance of rain

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

Jataí gets about 1464 mm of precipitation a year. On a typical day the chance of rain is very wet, but that rises and falls sharply with the seasons.

The wetter season lasts 6.5 months, from around Sep 30 to Apr 14, peaking in December at about 86% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jun 30.

January is the wettest month by volume, with 243 mm over about 26 wet days; July is the driest, with 6 mm.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetDec 9 · 86%Jun 30 · 3%
Rain on a day (%)Rain days
Jan8326
Feb8323
Mar8025
Apr4513
May175
Jun52
Jul41
Aug72
Sep298
Oct6019
Nov7623
Dec8426

Monthly rainfall

Over a full year, Jataí collects about 1464 mm of rain across 174 wet days — roughly 122 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 243 mm, while July is the driest at just 6 mm. The three wettest months alone bring about 47% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec24321221694321161360143203232
Rainfall (mm)Rain days
Jan24326
Feb21223
Mar21625
Apr9413
May325
Jun112
Jul61
Aug132
Sep608
Oct14319
Nov20323
Dec23226

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Jataí, 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 6 and lasts for 6.2 months, ending around October 10. 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 11 and lasts for 5.8 months, ending around April 5. 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 13 · 82%Jan 5 · 17%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2080
Feb2575
Mar3763
Apr5842
May6337
Jun7525
Jul8020
Aug8119
Sep6832
Oct4456
Nov2971
Dec2080

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 06 min of light; the shortest, around June 12, only 10 h 54 min — a swing of roughly 2 h 12 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan13.07:078:05
Feb12.67:238:00
Mar12.17:337:40
Apr11.67:397:15
May11.27:486:58
Jun10.97:596:55
Jul11.08:027:03
Aug11.47:497:13
Sep11.97:247:18
Oct12.47:007:24
Nov12.86:477:38
Dec13.16:517:55

Sunny days

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

Jataí 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 5.6 months, from around Apr 13 to Sep 30. The sunniest month is August, with roughly 21 sunny days (bright).

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

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 1321 daysJan 62 days
Sunny daysSky
Jan2Gloomy
Feb3Gloomy
Mar6Gloomy
Apr12Mixed
May15Bright
Jun18Bright
Jul21Bright
Aug21Bright
Sep15Bright
Oct8Gloomy
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 Jataí, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 7.1 months, from around September 30 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 September 29, and July is the most comfortable month — the air is dry or comfortable 95% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 22 · 96%Jan 1 · 0%oppressivehumidcomfortablemuggydryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan0058213
Feb0058412
Mar005859
Apr2824623
May143140160
Jun39401920
Jul6926500
Aug7318910
Sep382123180
Oct61123591
Nov0311814
Dec014879

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 Jataí is typically calm, near 7 km/h, and varies little with the seasons.

The windier part of the year lasts 4.6 months, from around May 25 to Oct 11. The windiest month is August, averaging about 9 km/h (calm).

The calmer part of the year runs from around Jan 16 to May 24, with March the calmest month at about 6 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeAug 18 · 9 km/hMar 16 · 6 km/h
Wind speed (km/h)Feels
Jan7calm
Feb7calm
Mar6calm
Apr7calm
May7calm
Jun8calm
Jul9calm
Aug9calm
Sep9calm
Oct7calm
Nov7calm
Dec7calm

Hazard calendar for Jataí

In seasonPeak

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

Jataí'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 Jataí

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid May, Jataí 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 Jataí 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 3 · 8.2

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
Jan3.5poor
Feb3.4poor
Mar3.6fair
Apr5.2fair
May7.2good
Jun8.0ideal
Jul7.9ideal
Aug6.4good
Sep4.7fair
Oct3.8fair
Nov3.6fair
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 Jataí for hot-weather activities is from late April to mid September, with a peak score in the first week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 3 · 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 Jataí, 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.

Jataí packs about the same all year — highs hold near 31°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 September, Jataí sees daytime highs around 31°C and nights near 19°C. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

UV index (midday) in Jataí 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 Jataí peaks around February 8 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 highExtremeFeb 8UV 15Jun 21UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun7Very high
Jul8Very high
Aug9Very high
Sep10Extreme
Oct12Extreme
Nov14Extreme
Dec14Extreme

Average hourly UV index in Jataí

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 February the burn window is concentrated in the middle of the day: about 8.5 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
Mar86.5
Apr7.55.5
May6.54
Jun63
Jul6.53.5
Aug74.5
Sep7.55
Oct86
Nov8.56.5
Dec8.57

Air quality in Jataí 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 Jataí is worst in September — around 25 µg/m³ PM2.5 (moderate), about 7.9× the cleanest month (July, 3 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1723 µg/m³Jul 113 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar6Good
Apr5Good
May5Good
Jun4Good
Jul3Good
Aug8Good
Sep25Moderate
Oct11Good
Nov5Good
Dec6Good
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Jataí 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. Jataí banks about 5,006 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)
Jan449
Feb410
Mar451
Apr415
May372
Jun340
Jul354
Aug408
Sep449
Oct471
Nov438
Dec450

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.

Jataí receives about 5.3 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.3 and 6.0 kWh/m².

The brighter stretch of the year lasts 6.9 months, from around Aug 16 to Mar 14. The brightest month is October, averaging about 6.0 kWh/m² (bright).

The dimmest month is June, down near 4.3 kWh/m² — roughly 28% less than the October peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseOct 146.0 kWhJun 134.3 kWh
Solar energy (kWh/m²)Level
Jan5.5Bright
Feb5.5Bright
Mar5.2Bright
Apr5.1Bright
May4.6Bright
Jun4.3Bright
Jul4.5Bright
Aug5.3Bright
Sep5.8Bright
Oct6.0Bright
Nov5.8Bright
Dec5.6Bright

Where is Jataí?

Jataí sits at 17.9°S, 51.7°W, 741 m above sea level, in Brazil. The nearest listed city is Rio Verde, 84 km away.

Topography around Jataí

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

Within 3 km, the terrain around Jataí has only modest variations in elevation — a maximum elevation change of 194 m around an average of 723 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 351 m; within 80 km, significant variations in elevation — a maximum elevation change of 583 m.

The land around Jataí is covered by artificial surfaces (54%) and trees (21%) within 3 km, cropland (55%) and trees (27%) within 16 km, and cropland (52%), trees (25%) and grassland (21%) within 80 km.

3 km
194 m
16 km
351 m
80 km
583 m
treesshrubsgrasslandcroplandartificial surfaceswater
Nearby: Rio Verde 84 km · Mineiros 94 km · Caiapônia 103 km · Santa Helena de Goiás 119 km · Cassilândia 137 km · Chapadão do Sul 139 km · Quirinópolis 148 km · Acreúna 152 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 Jataí (-17.8794°, -51.7217°, elevation 741 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).