Climate and average weather in Dianópolis

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

Best: late April to mid August

Over the course of the year, the temperature in Dianópolis typically varies from 19°C to 34°C, and is rarely below 17°C or above 37°C. September is the hottest month of the year, while January is the coldest.

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

Hottest
Sep
34°
Coldest
Jan
21°
Wettest
Jan
266 mm
Driest
Jul
0 mm
Rain / yr
1473 mm
140 wet days
Daylight
11.3–12.7 h
shortest–longest
Elevation
699 m
11.6°S
Clearest
Jul
24% cloud

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

Temperatures in Dianópolis 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 22°C; the coolest is January, with an average low of 21°C and high of 29°C.

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

15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2921
Feb2921
Mar3021
Apr3021
May3120
Jun3119
Jul3119
Aug3320
Sep3422
Oct3322
Nov3122
Dec3021

How hot and cold Dianópolis 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, Dianópolis feels like about 34°C (around September 15). About 226 days a year carry some heat stress, peaking in September.

15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan32292121
Feb32292121
Mar32302121
Apr33302121
May32312020
Jun31311919
Jul31311919
Aug33332020
Sep34342222
Oct34332222
Nov33312122
Dec32302121

Average hourly temperature in Dianópolis

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 January, near 21°C.

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

Dianópolis 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° / 21°26624.312.63.5
Feb29° / 21°23721.612.43.5
Mar30° / 21°24522.912.13.6
Apr30° / 21°11613.711.74.3
May31° / 20°294.311.55.1
Jun31° / 19°20.411.35.8
Jul31° / 19°0011.45.8
Aug33° / 20°10.211.64.7
Sep34° / 22°182.311.93.5
Oct33° / 22°9710.612.33.3
Nov31° / 22°22019.212.53.6
Dec30° / 21°24420.612.73.7

Chance of rain

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

Dianópolis gets about 1473 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 6.0 months, from around Oct 21 to Apr 21, peaking in January at about 79% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jun 25.

January is the wettest month by volume, with 266 mm over about 24 wet days; July is the driest, with 0 mm.

0%10%20%30%40%50%60%70%80%90%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetJan 21 · 79%Jun 25 · 0%
Rain on a day (%)Rain days
Jan7824
Feb7622
Mar7423
Apr4714
May144
Jun10
Jul00
Aug10
Sep82
Oct3411
Nov6319
Dec6821

Monthly rainfall

Over a full year, Dianópolis collects about 1473 mm of rain across 140 wet days — roughly 123 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 266 mm, while July is the driest at just 0 mm. The three wettest months alone bring about 51% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec266237245116292011897220244
Rainfall (mm)Rain days
Jan26624
Feb23722
Mar24523
Apr11614
May294
Jun20
Jul00
Aug10
Sep182
Oct9711
Nov22019
Dec24421

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Dianópolis, 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 21 and lasts for 5.8 months, ending around October 14. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 89% of the time on average.

The cloudier part of the year begins around October 15 and lasts for 6.2 months, ending around April 20. The cloudiest month is February, when it is overcast or mostly cloudy 75% 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%JanFebMarAprMayJunJulAugSepOctNovDecJul 17 · 89%Nov 28 · 21%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2575
Feb2575
Mar2575
Apr4753
May6436
Jun8218
Jul8911
Aug8416
Sep7525
Oct5050
Nov2773
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 42 min of light; the shortest, around June 6, only 11 h 18 min — a swing of roughly 1 h 24 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.65:586:35
Feb12.46:106:33
Mar12.16:156:19
Apr11.76:156:00
May11.56:205:48
Jun11.36:285:47
Jul11.46:325:54
Aug11.66:236:00
Sep11.96:046:00
Oct12.35:446:00
Nov12.55:366:09
Dec12.75:436:24

Sunny days

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

Dianópolis averages about 11 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 3 and 23 days.

The sunnier stretch runs 5.4 months, from around Apr 26 to Oct 5. The sunniest month is July, with roughly 23 sunny days (brilliant).

The greyest month is February, down near 3 sunny days — about 85% fewer than the July peak.

051015202530JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantJul 2123 daysFeb 233 days
Sunny daysSky
Jan4Gloomy
Feb3Gloomy
Mar4Gloomy
Apr8Mixed
May13Mixed
Jun20Bright
Jul24Brilliant
Aug22Bright
Sep16Bright
Oct8Mixed
Nov4Gloomy
Dec4Gloomy

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

The more humid part of the year lasts 7.4 months, from around October 19 to May 31. 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 June 1 to October 18, and August is the most comfortable month — the air is dry or comfortable 97% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecAug 1 · 98%Jan 1 · 0%oppressivecomfortablemuggyhumiddryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan0044452
Feb0024652
Mar0023562
Apr01114940
May11243376
Jun12552850
Jul4748500
Aug7027300
Sep52251491
Oct1519223014
Nov13114837
Dec0044550

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 Dianópolis is typically calm, near 7 km/h, and varies moderately with the seasons.

The windier part of the year lasts 5.4 months, from around May 9 to Oct 19. The windiest month is August, averaging about 11 km/h (calm).

The calmer part of the year runs from around Oct 20 to May 8, with February the calmest month at about 5 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeAug 19 · 11 km/hFeb 23 · 5 km/h
Wind speed (km/h)Feels
Jan5calm
Feb5calm
Mar5calm
Apr6calm
May8calm
Jun10calm
Jul10calm
Aug11calm
Sep10calm
Oct8calm
Nov6calm
Dec6calm

Hazard calendar for Dianópolis

In seasonPeak

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

Dianópolis'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 Dianópolis

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around early August, Dianópolis 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 Dianópolis for general outdoor tourist activities is from late April to mid August, with a peak score in the last week of June.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 25 · 5.9

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
Feb3.5fair
Mar3.6fair
Apr4.3fair
May5.1fair
Jun5.8good
Jul5.7good
Aug4.7fair
Sep3.6fair
Oct3.3poor
Nov3.6fair
Dec3.7fair

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

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 4 · 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 Dianópolis, 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.

Dianópolis packs about the same all year — highs hold near 34°C. Across the year the things worth having are light clothes, sun protection and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In September, Dianópolis sees daytime highs around 34°C and nights near 22°C. Pack light clothes and sun protection.

UV index (midday) in Dianópolis 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 Dianópolis peaks around February 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 15UV 15Jun 22UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug10Extreme
Sep13Extreme
Oct12Extreme
Nov13Extreme
Dec12Extreme

Average hourly UV index in Dianópolis

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)
Jan8.57
Feb8.57
Mar8.56.5
Apr7.56
May75
Jun6.54
Jul74.5
Aug7.55
Sep86
Oct86
Nov86.5
Dec8.56.5

Air quality in Dianópolis 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 Dianópolis is worst in September — around 24 µg/m³ PM2.5 (moderate), about 5.1× the cleanest month (June, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 2023 µg/m³Jun 185 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar7Good
Apr6Good
May6Good
Jun5Good
Jul5Good
Aug13Moderate
Sep24Moderate
Oct21Moderate
Nov9Good
Dec8Good
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Dianópolis 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. Dianópolis banks about 5,790 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around September.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan467
Feb419
Mar468
Apr464
May486
Jun456
Jul469
Aug510
Sep544
Oct552
Nov480
Dec475

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.

Dianópolis receives about 5.6 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 5.0 and 6.4 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.

012345678JanFebMarAprMayJunJulAugSepOctNovDecdimmoderatebrightintenseSep 146.4 kWhMay 245.0 kWh
Solar energy (kWh/m²)Level
Jan5.5Bright
Feb5.5Bright
Mar5.2Bright
Apr5.2Bright
May5.1Bright
Jun5.1Bright
Jul5.5Bright
Aug6.0Intense
Sep6.4Intense
Oct6.2Intense
Nov5.5Bright
Dec5.5Bright

Where is Dianópolis?

Dianópolis sits at 11.6°S, 46.8°W, 699 m above sea level, in Brazil. The nearest listed city is Luis Eduardo Magalhães, 124 km away.

Topography around Dianópolis

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

Within 3 km, the terrain around Dianópolis has only modest variations in elevation — a maximum elevation change of 170 m around an average of 684 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 430 m; within 80 km, large variations in elevation — a maximum elevation change of 655 m.

The land around Dianópolis is covered by trees (50%) and grassland (20%) within 3 km, trees (41%), grassland (29%) and shrubs (28%) within 16 km, and grassland (35%), shrubs (31%) and trees (20%) within 80 km.

3 km
170 m
16 km
430 m
80 km
655 m
treesshrubsgrasslandcroplandartificial surfaces
Nearby: Luis Eduardo Magalhães 124 km · Campos Belos 157 km · Formosa do Rio Preto 189 km · Porto Nacional 202 km · Barreiras 208 km · Riachão das Neves 208 km · São Desidério 217 km · Corrente 224 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 Dianópolis (-11.6278°, -46.8206°, elevation 699 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).