Climate and average weather in Cruzeiro do Sul

In Cruzeiro do Sul, the weather is muggy, hot, wet, and partly cloudy and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around March.

Best: late May to mid August

Over the course of the year, the temperature in Cruzeiro do Sul typically varies from 21°C to 32°C, and is rarely below 18°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 Cruzeiro do Sul for warm-weather activities is from late May to mid August.

Hottest
Sep
32°
Coldest
Jun
21°
Wettest
Mar
283 mm
Driest
Jul
56 mm
Rain / yr
2076 mm
252 wet days
Daylight
11.6–12.4 h
shortest–longest
Elevation
195 m
7.6°S
Clearest
Aug
51% cloud

Cruzeiro do Sul is city in Brazil.

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

Cruzeiro do Sul 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 May to mid August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Cruzeiro do Sul 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 22°C; the coolest is June, with an average low of 21°C and high of 30°C.

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

15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3123
Feb3023
Mar3023
Apr3023
May3022
Jun3021
Jul3021
Aug3221
Sep3222
Oct3223
Nov3123
Dec3123

How hot and cold Cruzeiro do Sul 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, Cruzeiro do Sul feels like about 36°C (around September 22). Nearly every day a year carries some heat stress, peaking in September.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan35312323
Feb35302323
Mar35302323
Apr35302323
May34302222
Jun33302121
Jul33302121
Aug35322121
Sep36322222
Oct36322323
Nov36312323
Dec35312323

Average hourly temperature in Cruzeiro do Sul

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 21°C.

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

Cruzeiro do Sul 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
Jan31° / 23°23925.412.42.9
Feb30° / 23°24223.612.32.9
Mar30° / 23°28327.512.12.8
Apr30° / 23°22224.411.83.0
May30° / 22°13420.611.73.7
Jun30° / 21°8115.311.64.4
Jul30° / 21°5611.911.64.7
Aug32° / 21°7112.911.73.9
Sep32° / 22°10917.1123.2
Oct32° / 23°17622.712.22.9
Nov31° / 23°22123.812.32.8
Dec31° / 23°24326.412.42.8

Chance of rain

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

Cruzeiro do Sul gets about 2076 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 7.1 months, from around Oct 6 to May 8, peaking in March at about 90% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 29.

March is the wettest month by volume, with 283 mm over about 28 wet days; July is the driest, with 56 mm.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetMar 8 · 90%Jul 29 · 35%
Rain on a day (%)Rain days
Jan8325
Feb8524
Mar8828
Apr8024
May6621
Jun5115
Jul3912
Aug4213
Sep5717
Oct7323
Nov7924
Dec8426

Monthly rainfall

Over a full year, Cruzeiro do Sul collects about 2076 mm of rain across 252 wet days — roughly 173 mm in an average month.

It doesn’t fall evenly. March is the wettest month with 283 mm, while July is the driest at just 56 mm. The three wettest months alone bring about 37% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec239242283222134815671109176221243
Rainfall (mm)Rain days
Jan23925
Feb24224
Mar28328
Apr22224
May13421
Jun8115
Jul5612
Aug7113
Sep10917
Oct17623
Nov22124
Dec24326

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Cruzeiro do Sul, 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 May 17 and lasts for 4.8 months, ending around October 9. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 62% of the time on average.

The cloudier part of the year begins around October 10 and lasts for 7.2 months, ending around May 16. The cloudiest month is February, when it is overcast or mostly cloudy 95% 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 1 · 67%Feb 15 · 5%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan892
Feb595
Mar793
Apr1387
May2674
Jun4456
Jul6040
Aug6238
Sep4258
Oct2179
Nov1288
Dec991

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 24 min of light; the shortest, around May 17, only 11 h 36 min — a swing of roughly 0 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.45:486:12
Feb12.35:586:13
Mar12.15:596:02
Apr11.85:565:46
May11.75:575:37
Jun11.66:045:38
Jul11.66:085:44
Aug11.76:025:47
Sep12.05:465:44
Oct12.25:315:41
Nov12.35:255:47
Dec12.45:346:00

Sunny days

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

Cruzeiro do Sul averages about 4 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 14 days.

The sunnier stretch runs 4.1 months, from around May 29 to Sep 30. The sunniest month is August, with roughly 11 sunny days (mixed).

The greyest month is January, down near 0 sunny days — about 98% fewer than the August peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightAug 414 daysJan 80 days
Sunny daysSky
Jan0Gloomy
Feb0Gloomy
Mar0Gloomy
Apr1Gloomy
May3Gloomy
Jun7Gloomy
Jul11Mixed
Aug12Mixed
Sep6Gloomy
Oct2Gloomy
Nov1Gloomy
Dec0Gloomy

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.

Cruzeiro do Sul is humid all year round — on a typical day the air feels at least humid, and there is no real dry season to wait for.

The stickiest month is January, when it feels muggy, oppressive or miserable about 100% of the time. Even in August, the mildest month, the air is dry or comfortable only 2% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecmiserableoppressivemuggy
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan0018911
Feb0008713
Mar0008317
Apr0147520
May0287416
Jun0212823
Jul2518750
Aug2419741
Sep027892
Oct003898
Nov0018018
Dec0008812

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 Cruzeiro do Sul is steady company: average speeds sit near 5 km/hcalm — in every month of the year, with no meaningful windy or calm season.

0510JanFebMarAprMayJunJulAugSepOctNovDeccalmDec 31 · 6 km/hJun 5 · 4 km/h
Wind speed (km/h)Feels
Jan5calm
Feb5calm
Mar5calm
Apr5calm
May4calm
Jun4calm
Jul5calm
Aug5calm
Sep5calm
Oct5calm
Nov5calm
Dec6calm

Best time to visit Cruzeiro do Sul

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around early June, Cruzeiro do Sul 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 Cruzeiro do Sul for general outdoor tourist activities is from late May to mid August, with a peak score in the second week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 13 · 4.8

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
Jan2.9poor
Feb2.9poor
Mar2.8poor
Apr3.1poor
May3.7fair
Jun4.4fair
Jul4.7fair
Aug3.9fair
Sep3.2poor
Oct2.9poor
Nov2.8poor
Dec2.8poor

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 Cruzeiro do Sul for hot-weather activities is from late May to mid September, with a peak score in the last week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 26 · 6.7

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 Cruzeiro do Sul, 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.

Cruzeiro do Sul packs about the same all year — highs hold near 32°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, Cruzeiro do Sul sees daytime highs around 32°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

UV index (midday) in Cruzeiro do Sul 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 Cruzeiro do Sul peaks around February 14 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 24 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 14UV 17Jul 24UV 9
UV index (midday)Level
Jan15Extreme
Feb17Extreme
Mar15Extreme
Apr12Extreme
May12Extreme
Jun10Very high
Jul9Very high
Aug9Very high
Sep10Extreme
Oct13Extreme
Nov13Extreme
Dec13Extreme

Average hourly UV index in Cruzeiro do Sul

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
Apr86
May7.55.5
Jun75
Jul74.5
Aug74.5
Sep7.55.5
Oct86
Nov86
Dec8.56.5

Air quality in Cruzeiro do Sul 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 Cruzeiro do Sul is worst in September — around 48 µg/m³ PM2.5 (poor), about 6.8× the cleanest month (June, 7 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModeratePoorModerateGoodSep 1545 µg/m³Jun 117 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb15Moderate
Mar13Moderate
Apr10Good
May8Good
Jun7Good
Jul10Good
Aug26Moderate
Sep48Poor
Oct15Moderate
Nov13Moderate
Dec11Good
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Cruzeiro do Sul 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. Cruzeiro do Sul banks about 6,005 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)
Jan515
Feb464
Mar512
Apr492
May493
Jun465
Jul481
Aug514
Sep516
Oct531
Nov505
Dec517

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.

Cruzeiro do Sul receives about 4.7 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 4.0 and 5.3 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.

0123456JanFebMarAprMayJunJulAugSepOctNovDecdimmoderatebrightSep 255.3 kWhJun 34.0 kWh
Solar energy (kWh/m²)Level
Jan4.8Bright
Feb4.7Bright
Mar4.5Bright
Apr4.3Bright
May4.1Bright
Jun4.0Bright
Jul4.4Bright
Aug5.0Bright
Sep5.3Bright
Oct5.2Bright
Nov5.0Bright
Dec4.8Bright

Where is Cruzeiro do Sul?

Cruzeiro do Sul sits at 7.6°S, 72.7°W, 195 m above sea level, in Brazil. The nearest listed city is Mâncio Lima, 24 km away.

ContamanaFeijó

Topography around Cruzeiro do Sul

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

Within 3 km, the terrain around Cruzeiro do Sul has only modest variations in elevation — a maximum elevation change of 65 m around an average of 190 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 103 m; within 80 km, only modest variations in elevation — a maximum elevation change of 146 m.

The land around Cruzeiro do Sul is covered by trees (62%) and artificial surfaces (22%) within 3 km, trees (72%) and grassland (24%) within 16 km, and trees (95%) within 80 km.

3 km
65 m
16 km
103 m
80 km
146 m
treesgrasslandartificial surfacesbare terrainwater
Nearby: Mâncio Lima 24 km · Ipixuna 126 km · Marechal Thaumaturgo 147 km · Tarauacá 219 km · San Fernando 222 km · Pucallpa 223 km · Contamana 260 km · Feijó 263 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 Cruzeiro do Sul (-7.6276°, -72.6776°, elevation 195 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).