Climate and average weather in Pires do Rio

In Pires do Rio, 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 December.

Best: early May to mid August

Over the course of the year, the temperature in Pires do Rio 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 June is the coldest.

Based on the travel score, the best time of year to visit Pires do Rio for warm-weather activities is from early May to mid August.

Hottest
Sep
31°
Coldest
Jun
15°
Wettest
Dec
255 mm
Driest
Jul
2 mm
Rain / yr
1284 mm
140 wet days
Daylight
11.0–13.0 h
shortest–longest
Elevation
770 m
17.3°S
Clearest
Aug
27% cloud

Pires do Rio is human settlement in Brazil.

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

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

Temperatures in Pires do Rio 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 June, with an average low of 15°C and high of 27°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)
Jan2920
Feb2920
Mar2920
Apr2919
May2817
Jun2715
Jul2815
Aug3016
Sep3119
Oct3120
Nov2920
Dec2920

Average hourly temperature in Pires do Rio

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 June, near 15°C.

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

Pires do Rio 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°23921.912.93.9
Feb29° / 20°17518.312.64.1
Mar29° / 20°17219.412.14.3
Apr29° / 19°6810.211.65.6
May28° / 17°172.611.27.4
Jun27° / 15°60.9118.2
Jul28° / 15°20.311.18.2
Aug30° / 16°61.111.46.7
Sep31° / 19°325.411.95.0
Oct31° / 20°10413.712.44.1
Nov29° / 20°20921.612.83.8
Dec29° / 20°25524.1133.7

Chance of rain

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

Pires do Rio gets about 1284 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 12 to Apr 12, peaking in December at about 80% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 7.

December is the wettest month by volume, with 255 mm over about 24 wet days; July is the driest, with 2 mm.

0%10%20%30%40%50%60%70%80%90%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetDec 6 · 80%Jul 7 · 1%
Rain on a day (%)Rain days
Jan7122
Feb6618
Mar6219
Apr3410
May103
Jun31
Jul10
Aug41
Sep195
Oct4414
Nov7122
Dec7724

Monthly rainfall

Over a full year, Pires do Rio collects about 1284 mm of rain across 140 wet days — roughly 107 mm in an average month.

It doesn’t fall evenly. December is the wettest month with 255 mm, while July is the driest at just 2 mm. The three wettest months alone bring about 55% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec239175172681762632104209255
Rainfall (mm)Rain days
Jan23922
Feb17518
Mar17219
Apr6810
May173
Jun61
Jul20
Aug61
Sep325
Oct10414
Nov20922
Dec25524

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Pires do Rio, 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 6.2 months, ending around October 12. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 83% of the time on average.

The cloudier part of the year begins around October 13 and lasts for 5.8 months, ending around April 6. The cloudiest month is December, 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 14 · 85%Dec 9 · 17%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2674
Feb3169
Mar4060
Apr6238
May7129
Jun7723
Jul8317
Aug8317
Sep7228
Oct4951
Nov2872
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 hours of light; the shortest, around June 1, only 11 hours — a swing of roughly 2 hours.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.96:557:50
Feb12.67:107:45
Mar12.17:197:26
Apr11.67:257:02
May11.27:346:45
Jun11.07:446:43
Jul11.17:476:50
Aug11.47:357:00
Sep11.97:107:05
Oct12.46:467:10
Nov12.86:347:23
Dec13.06:387:40

Sunny days

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

Pires do Rio averages about 12 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 6.0 months, from around Apr 12 to Oct 10. The sunniest month is August, with roughly 21 sunny days (bright).

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

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 1222 daysDec 72 days
Sunny daysSky
Jan4Gloomy
Feb4Gloomy
Mar7Gloomy
Apr13Mixed
May16Bright
Jun18Bright
Jul21Bright
Aug22Bright
Sep17Bright
Oct10Mixed
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 Pires do Rio, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 6.5 months, from around October 16 to May 2. The muggiest month is March, when the air feels humid, muggy or worse about 99% of the time.

The most comfortable stretch runs from around May 3 to October 15, and July is the most comfortable month — the air is dry or comfortable 98% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 13 · 99%Mar 21 · 0%comfortablemuggyhumiddryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan0317781
Feb0117792
Mar0015841
Apr21135520
May15383890
Jun46421200
Jul7721200
Aug8312500
Sep52231770
Oct191731330
Nov1524690
Dec0117811

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 Pires do Rio is typically calm, near 8 km/h, and varies little with the seasons.

The windier part of the year lasts 5.2 months, from around May 20 to Oct 23. The windiest month is August, averaging about 10 km/h (calm).

The calmer part of the year runs from around Oct 24 to May 19, with March the calmest month at about 6 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeAug 22 · 10 km/hMar 1 · 6 km/h
Wind speed (km/h)Feels
Jan7calm
Feb6calm
Mar6calm
Apr7calm
May8calm
Jun9calm
Jul9calm
Aug10calm
Sep9calm
Oct8calm
Nov7calm
Dec7calm

Hazard calendar for Pires do Rio

In seasonPeak

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

Pires do Rio'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 Pires do Rio

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid May, Pires do Rio 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 Pires do Rio 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 3 · 8.4

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
Jan3.9fair
Feb4.1fair
Mar4.3fair
Apr5.6good
May7.4good
Jun8.2ideal
Jul8.2ideal
Aug6.7good
Sep5.0fair
Oct4.1fair
Nov3.8fair
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 Pires do Rio for hot-weather activities is from late April to late September, with a peak score in the first week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 7 · 9.1

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 Pires do Rio, 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.

Pires do Rio packs about the same all year — highs hold near 31°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, Pires do Rio sees daytime highs around 31°C and nights near 19°C. Pack light clothes and sun protection. About 5 days see rain.

UV index (midday) in Pires do Rio 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 Pires do Rio peaks around February 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 13UV 15Jun 21UV 8
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov14Extreme
Dec14Extreme

Average hourly UV index in Pires do Rio

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
Mar86.5
Apr7.55.5
May6.54.5
Jun6.53.5
Jul6.53.5
Aug75
Sep7.55.5
Oct8.56.5
Nov8.57
Dec8.57
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Pires do Rio 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. Pires do Rio banks about 4,997 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)
Jan444
Feb403
Mar444
Apr416
May383
Jun340
Jul351
Aug402
Sep453
Oct483
Nov435
Dec443

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.

Pires do Rio receives about 5.4 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.5 and 6.3 kWh/m².

The brighter stretch of the year lasts 3.6 months, from around Aug 11 to Nov 29. The brightest month is October, averaging about 6.1 kWh/m² (intense).

The dimmest month is June, down near 4.5 kWh/m² — roughly 27% less than the October peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightintenseOct 116.3 kWhJun 204.5 kWh
Solar energy (kWh/m²)Level
Jan5.6Bright
Feb5.8Bright
Mar5.3Bright
Apr5.1Bright
May4.7Bright
Jun4.5Bright
Jul4.7Bright
Aug5.5Bright
Sep6.1Intense
Oct6.2Intense
Nov5.6Bright
Dec5.5Bright

Where is Pires do Rio?

Pires do Rio sits at 17.3°S, 48.3°W, 770 m above sea level, in Brazil. The nearest listed city is Orizona, 30 km away.

Topography around Pires do Rio

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

Within 3 km, the terrain around Pires do Rio has only modest variations in elevation — a maximum elevation change of 147 m around an average of 729 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 341 m; within 80 km, large variations in elevation — a maximum elevation change of 608 m.

The land around Pires do Rio is covered by grassland (38%), trees (25%) and artificial surfaces (22%) within 3 km, grassland (43%), trees (28%) and cropland (26%) within 16 km, and cropland (34%), grassland (33%) and trees (27%) within 80 km.

3 km
147 m
16 km
341 m
80 km
608 m
treesshrubsgrasslandcroplandartificial surfaceswater
Nearby: Orizona 30 km · Ipameri 49 km · Caldas Novas 62 km · Piracanjuba 78 km · Silvânia 79 km · Bela Vista de Goiás 80 km · Cristalina 92 km · Morrinhos 99 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 Pires do Rio (-17.2997°, -48.2794°, elevation 770 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).