Climate and average weather in Muaná

In Muaná, the weather is muggy, hot, wet, and mostly clear and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around March.

Best: late June to mid December

Over the course of the year, the temperature in Muaná typically varies from 24°C to 32°C, and is rarely below 23°C or above 34°C. October is the hottest month of the year, while February is the coldest.

Based on the travel score, the best time of year to visit Muaná for warm-weather activities is from late June to mid December.

Hottest
Oct
32°
Coldest
Feb
24°
Wettest
Mar
435 mm
Driest
Sep
17 mm
Rain / yr
2158 mm
220 wet days
Daylight
11.9–12.1 h
shortest–longest
Elevation
7 m
1.5°S
Clearest
Aug
37% cloud

Muaná 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 June to mid December.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Muaná stay fairly even through the year, without a distinct hot or cool season. The warmest month is October, with an average high of 32°C and low of 25°C; the coolest is February, with an average low of 24°C and high of 30°C.

Days typically run about 7°C warmer than nights year-round.

20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3024
Feb3024
Mar3024
Apr3024
May3124
Jun3124
Jul3124
Aug3225
Sep3225
Oct3225
Nov3225
Dec3225

How hot and cold Muaná 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, Muaná feels like about 39°C (around June 5). Nearly every day a year carries some heat stress, peaking in June.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan36302424
Feb35302424
Mar36302424
Apr37302424
May38312424
Jun38312424
Jul38312424
Aug38322525
Sep38322525
Oct38322525
Nov38322525
Dec38322525

Average hourly temperature in Muaná

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 32°C, and coldest before dawn in February, near 24°C.

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

Muaná 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
Jan30° / 24°24327.712.12.8
Feb30° / 24°32526.8122.7
Mar30° / 24°43530.5122.7
Apr30° / 24°42229.6122.6
May31° / 24°30527.911.92.8
Jun31° / 24°14221.111.93.4
Jul31° / 24°7815.311.94.0
Aug32° / 25°328.6124.4
Sep32° / 25°174.7124.5
Oct32° / 25°194.7124.4
Nov32° / 25°366.712.14.1
Dec32° / 25°10516.912.13.5

Chance of rain

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

Muaná gets about 2158 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 Dec 19 to Jul 3, peaking in March at about 99% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Sep 27.

March is the wettest month by volume, with 435 mm over about 31 wet days; September is the driest, with 17 mm.

0%10%20%30%40%50%60%70%80%90%100%110%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainoften wetvery wetMar 27 · 99%Sep 27 · 11%
Rain on a day (%)Rain days
Jan8928
Feb9627
Mar9831
Apr9830
May8928
Jun7221
Jul4915
Aug289
Sep165
Oct165
Nov237
Dec5517

Monthly rainfall

Over a full year, Muaná collects about 2158 mm of rain across 220 wet days — roughly 180 mm in an average month.

It doesn’t fall evenly. March is the wettest month with 435 mm, while September is the driest at just 17 mm. The three wettest months alone bring about 55% of the year’s total.

050100150200250300350400450500JanFebMarAprMayJunJulAugSepOctNovDec2433254354223051427832171936105
Rainfall (mm)Rain days
Jan24328
Feb32527
Mar43531
Apr42230
May30528
Jun14221
Jul7815
Aug329
Sep175
Oct195
Nov367
Dec10517

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Muaná, 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 31 and lasts for 6.3 months, ending around December 9. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 86% of the time on average.

The cloudier part of the year begins around December 10 and lasts for 5.7 months, ending around May 30. The cloudiest month is March, when it is overcast or mostly cloudy 92% 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%JanFebMarAprMayJunJulAugSepOctNovDecSep 4 · 89%Mar 29 · 7%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearer
Clearer (%)Cloudier (%)
Jan1882
Feb1090
Mar892
Apr1090
May3169
Jun6535
Jul8020
Aug8614
Sep8515
Oct7129
Nov5545
Dec3961

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. Close to the equator, Muaná barely changes through the year: days stay near 12 h 06 min of light in every season.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.16:246:29
Feb12.06:306:33
Mar12.06:266:27
Apr12.06:186:16
May11.96:156:11
Jun11.96:206:14
Jul11.96:256:20
Aug12.06:226:19
Sep12.06:116:11
Oct12.06:016:03
Nov12.16:006:04
Dec12.16:106:16

Sunny days

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

Muaná averages about 9 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 21 days.

The sunnier stretch runs 5.6 months, from around Jun 4 to Nov 20. The sunniest month is August, with roughly 20 sunny days (bright).

The greyest month is April, down near 1 sunny days — about 97% fewer than the August peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 3021 daysApr 20 days
Sunny daysSky
Jan2Gloomy
Feb1Gloomy
Mar0Gloomy
Apr1Gloomy
May4Gloomy
Jun12Mixed
Jul17Bright
Aug20Bright
Sep19Bright
Oct15Mixed
Nov9Mixed
Dec5Gloomy

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.

Muaná 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 January, the mildest month, the air is dry or comfortable only 0% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecmiserableoppressive
Oppressive (%)Miserable (%)
Jan3763
Feb3565
Mar2377
Apr991
May694
Jun1684
Jul3664
Aug4951
Sep6931
Oct7921
Nov7327
Dec4852

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 Muaná is typically calm, near 9 km/h, and varies moderately with the seasons.

The windier part of the year lasts 5.0 months, from around Aug 4 to Jan 2. The windiest month is October, averaging about 11 km/h (calm).

The calmer part of the year runs from around Jan 3 to Aug 3, with April the calmest month at about 7 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmlight breezeOct 3 · 12 km/hApr 30 · 6 km/h
Wind speed (km/h)Feels
Jan8calm
Feb8calm
Mar8calm
Apr7calm
May7calm
Jun7calm
Jul8calm
Aug10calm
Sep11calm
Oct11calm
Nov11calm
Dec10calm

Hazard calendar for Muaná

In seasonPeak

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

Muaná's monsoon runs January–May, 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 Muaná

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around early December, Muaná 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 Muaná for general outdoor tourist activities is from late June to mid December, with a peak score in the third week of September.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationSep 18 · 4.5

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
Jan2.8poor
Feb2.7poor
Mar2.7poor
Apr2.6poor
May2.8poor
Jun3.3poor
Jul4.0fair
Aug4.3fair
Sep4.5fair
Oct4.4fair
Nov4.1fair
Dec3.5poor

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 Muaná for hot-weather activities is from mid July to early December, with a peak score in the last week of September.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationSep 25 · 7.6

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 Muaná, 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.

Muaná packs about the same all year — highs hold near 32°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 October, Muaná sees daytime highs around 32°C and nights near 25°C. Pack light clothes and sun protection. About 5 days see rain.

Sea temperature near Muaná

Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.

The sea at the nearest coast (about 68 km away) is warmest in June at about 29°C and coldest in March near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb28Tropical
Mar28Tropical
Apr29Tropical
May29Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index (midday) in Muaná 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 Muaná peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 24 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 15UV 15Jul 24UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Extreme
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov10Extreme
Dec10Extreme

Average hourly UV index in Muaná

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 March the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 6.5 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)
Jan86
Feb8.56.5
Mar8.56.5
Apr86.5
May86
Jun7.55.5
Jul7.55
Aug7.55
Sep7.55.5
Oct86
Nov7.55.5
Dec7.55.5

Air quality in Muaná 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 Muaná is worst in February — around 19 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (June, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 2019 µg/m³Jun 239 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb19Moderate
Mar19Moderate
Apr16Moderate
May11Good
Jun9Good
Jul9Good
Aug11Good
Sep13Moderate
Oct16Moderate
Nov16Moderate
Dec15Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Muaná 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. Muaná banks about 6,477 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around November.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan533
Feb469
Mar522
Apr511
May542
Jun530
Jul552
Aug567
Sep556
Oct576
Nov558
Dec561

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.

Muaná receives about 5.4 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.4 and 6.6 kWh/m².

The brighter stretch of the year lasts 5.4 months, from around Jul 10 to Dec 20. The brightest month is October, averaging about 6.5 kWh/m² (intense).

The dimmest month is April, down near 4.5 kWh/m² — roughly 32% less than the October peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmoderatebrightintenseOct 46.6 kWhApr 64.4 kWh
Solar energy (kWh/m²)Level
Jan4.9Bright
Feb4.6Bright
Mar4.6Bright
Apr4.5Bright
May4.7Bright
Jun5.2Bright
Jul5.5Bright
Aug6.0Intense
Sep6.5Intense
Oct6.6Intense
Nov6.2Intense
Dec5.5Bright

Where is Muaná?

Muaná sits at 1.5°S, 49.2°W, 7 m above sea level, in Brazil. The nearest listed city is São Sebastião da Boa Vista, 41 km away.

Topography around Muaná

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

Within 3 km, the terrain around Muaná has only modest variations in elevation — a maximum elevation change of 32 m around an average of 13 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 32 m; within 80 km, only modest variations in elevation — a maximum elevation change of 52 m.

The land around Muaná is covered by trees (88%) within 3 km, trees (66%) and water (23%) within 16 km, and trees (62%) within 80 km.

3 km
32 m
16 km
32 m
80 km
52 m
treesgrasslandartificial surfaceswaterwetland
Nearby: São Sebastião da Boa Vista 41 km · Ponta de Pedras 41 km · Abaetetuba 43 km · Limoeiro do Ajuru 45 km · Igarapé Miri 57 km · Moju 64 km · Cachoeira do Arari 64 km · Barcarena 66 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 Muaná (-1.5283°, -49.2167°, elevation 7 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).