Climate and average weather in Três Marias

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

Best: late April to late August

Over the course of the year, the temperature in Três Marias typically varies from 17°C to 31°C, and is rarely below 15°C or above 35°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 Três Marias for warm-weather activities is from late April to late August.

Hottest
Oct
31°
Coldest
Jun
17°
Wettest
Dec
231 mm
Driest
Jul
1 mm
Rain / yr
1003 mm
109 wet days
Daylight
10.9–13.1 h
shortest–longest
Elevation
547 m
18.2°S
Clearest
Aug
29% cloud

Três Marias 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 late August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Três Marias stay fairly even through the year, without a distinct hot or cool season. The warmest month is October, with an average high of 31°C and low of 21°C; the coolest is June, with an average low of 17°C and high of 27°C.

Days typically run about 9°C warmer than nights, with the widest day–night swing (around 11°C) in August.

10°15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2922
Feb3022
Mar2922
Apr2921
May2819
Jun2717
Jul2717
Aug2917
Sep3119
Oct3121
Nov2921
Dec2922

Average hourly temperature in Três Marias

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 31°C, and coldest before dawn in June, near 17°C.

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

Três Marias 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° / 22°17617.6134.3
Feb30° / 22°12213.412.64.4
Mar29° / 22°13815.812.14.6
Apr29° / 21°497.611.66.0
May28° / 19°152.711.27.6
Jun27° / 17°30.710.98.3
Jul27° / 17°10.3118.4
Aug29° / 17°30.611.47.4
Sep31° / 19°22411.95.7
Oct31° / 21°69912.44.6
Nov29° / 21°17417.512.94.3
Dec29° / 22°23119.813.14.2

Chance of rain

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

Três Marias gets about 1003 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.

The wetter season lasts 5.7 months, from around Oct 21 to Apr 11, peaking in December at about 69% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jun 24.

December is the wettest month by volume, with 231 mm over about 20 wet days; July is the driest, with 1 mm.

0%10%20%30%40%50%60%70%80%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetDec 4 · 69%Jun 24 · 1%
Rain on a day (%)Rain days
Jan5618
Feb4913
Mar5016
Apr258
May93
Jun21
Jul10
Aug21
Sep134
Oct299
Nov5718
Dec6420

Monthly rainfall

Over a full year, Três Marias collects about 1003 mm of rain across 109 wet days — roughly 84 mm in an average month.

It doesn’t fall evenly. December is the wettest month with 231 mm, while July is the driest at just 1 mm. The three wettest months alone bring about 58% of the year’s total.

050100150200250JanFebMarAprMayJunJulAugSepOctNovDec17612213849153132269174231
Rainfall (mm)Rain days
Jan17618
Feb12213
Mar13816
Apr498
May153
Jun31
Jul10
Aug31
Sep224
Oct699
Nov17418
Dec23120

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Três Marias, 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 7 and lasts for 6.3 months, ending around October 14. 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 15 and lasts for 5.7 months, ending around April 6. The cloudiest month is December, 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 15 · 83%Dec 6 · 20%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan3169
Feb4060
Mar4555
Apr6436
May6832
Jun7723
Jul8119
Aug8119
Sep7228
Oct5248
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 13 h 06 min of light; the shortest, around June 8, 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)
Jan13.06:417:40
Feb12.66:577:34
Mar12.17:077:14
Apr11.67:146:49
May11.27:236:32
Jun10.97:346:29
Jul11.07:366:37
Aug11.47:246:46
Sep11.96:586:52
Oct12.46:336:59
Nov12.96:207:12
Dec13.16:257:30

Sunny days

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

Três Marias averages about 12 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 3 and 21 days.

The sunnier stretch runs 6.1 months, from around Apr 11 to Oct 14. The sunniest month is August, with roughly 21 sunny days (bright).

The greyest month is December, down near 4 sunny days — about 82% fewer than the August peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 1521 daysDec 33 days
Sunny daysSky
Jan6Gloomy
Feb7Gloomy
Mar9Mixed
Apr13Mixed
May16Bright
Jun18Bright
Jul20Bright
Aug21Bright
Sep17Bright
Oct11Mixed
Nov5Gloomy
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 Três Marias, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 7.3 months, from around October 18 to May 27. 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 28 to October 17, and August is the most comfortable month — the air is dry or comfortable 86% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecAug 9 · 89%Jan 1 · 0%oppressivehumidcomfortablemuggydryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan0086329
Feb00106427
Mar0056629
Apr04236212
May21952271
Jun6504130
Jul22641400
Aug38481310
Sep253628110
Oct72137342
Nov03236410
Dec0066924

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

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeSep 17 · 8 km/hMar 8 · 6 km/h
Wind speed (km/h)Feels
Jan7calm
Feb6calm
Mar6calm
Apr6calm
May6calm
Jun7calm
Jul7calm
Aug8calm
Sep8calm
Oct8calm
Nov7calm
Dec7calm

Hazard calendar for Três Marias

In seasonPeak

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

Três Marias'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 Três Marias

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around early May, Três Marias 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 Três Marias for general outdoor tourist activities is from late April to late August, with a peak score in the second week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 13 · 8.5

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
Jan4.3fair
Feb4.4fair
Mar4.6fair
Apr6.0good
May7.6ideal
Jun8.3ideal
Jul8.4ideal
Aug7.4good
Sep5.7good
Oct4.7fair
Nov4.3fair
Dec4.2fair

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

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 18 · 9.0

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 Três Marias, 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.

Três Marias 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 October, Três Marias sees daytime highs around 31°C and nights near 21°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

UV index (midday) in Três Marias 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 Três Marias peaks around February 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 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 10UV 15Jun 22UV 7
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar14Extreme
Apr11Extreme
May8Very high
Jun7Very high
Jul8Very high
Aug9Very high
Sep11Extreme
Oct12Extreme
Nov14Extreme
Dec14Extreme

Average hourly UV index in Três Marias

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 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
Feb97
Mar86.5
Apr7.55.5
May6.54
Jun63.5
Jul63.5
Aug74.5
Sep7.55.5
Oct86
Nov8.57
Dec97
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Três Marias 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. Três Marias banks about 5,259 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)
Jan483
Feb443
Mar477
Apr444
May405
Jun362
Jul368
Aug402
Sep449
Oct499
Nov457
Dec470

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.

Três Marias receives about 5.4 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.3 and 6.3 kWh/m².

The brighter stretch of the year lasts 7.0 months, from around Aug 18 to Mar 18. The brightest month is October, averaging about 6.2 kWh/m² (intense).

The dimmest month is June, down near 4.3 kWh/m² — roughly 30% less than the October peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseOct 126.3 kWhJun 64.3 kWh
Solar energy (kWh/m²)Level
Jan5.9Bright
Feb6.2Intense
Mar5.5Bright
Apr5.1Bright
May4.6Bright
Jun4.3Bright
Jul4.6Bright
Aug5.4Bright
Sep6.1Intense
Oct6.2Intense
Nov5.6Bright
Dec5.7Bright

Where is Três Marias?

Três Marias sits at 18.2°S, 45.2°W, 547 m above sea level, in Brazil. The nearest listed city is Corinto, 85 km away.

Topography around Três Marias

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

Within 3 km, the terrain around Três Marias has only modest variations in elevation — a maximum elevation change of 243 m around an average of 572 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 326 m; within 80 km, significant variations in elevation — a maximum elevation change of 527 m.

The land around Três Marias is covered by grassland (27%) and artificial surfaces (21%) within 3 km, shrubs (32%), grassland (27%) and trees (22%) within 16 km, and grassland (38%), trees (29%) and shrubs (20%) within 80 km.

3 km
243 m
16 km
326 m
80 km
527 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Corinto 85 km · Várzea da Palma 86 km · Buritizeiro 100 km · Pirapora 101 km · Curvelo 105 km · Abaeté 108 km · João Pinheiro 111 km · Pompéu 118 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 Três Marias (-18.2064°, -45.2417°, elevation 547 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).