Climate and average weather in Marco

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

Best: mid May to late December

Over the course of the year, the temperature in Marco typically varies from 24°C to 34°C, and is rarely below 23°C or above 35°C. September is the hottest month of the year, while April is the coldest.

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

Hottest
Sep
34°
Coldest
Apr
24°
Wettest
Apr
262 mm
Driest
Sep
2 mm
Rain / yr
934 mm
126 wet days
Daylight
11.8–12.2 h
shortest–longest
Elevation
22 m
3.1°S
Clearest
Sep
22% cloud

Marco is human settlement in Brazil.

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

Marco 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 mid May to late December.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Marco 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 25°C; the coolest is April, with an average low of 24°C and high of 30°C.

Days typically run about 8°C warmer than nights year-round.

20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3225
Feb3124
Mar3024
Apr3024
May3124
Jun3224
Jul3224
Aug3324
Sep3425
Oct3325
Nov3325
Dec3325

How hot and cold Marco 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, Marco feels like about 37°C (around November 29). Nearly every day a year carries some heat stress, peaking in November.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan36322525
Feb35312424
Mar35302424
Apr35302424
May35312424
Jun35322424
Jul35322424
Aug36332424
Sep36342525
Oct37332525
Nov37332525
Dec37332525

Average hourly temperature in Marco

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 April, near 24°C.

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

Marco 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
Jan32° / 25°10317.412.23.4
Feb31° / 24°1452112.13.1
Mar30° / 24°23126.4123.0
Apr30° / 24°26225.411.93.0
May31° / 24°11317.111.93.9
Jun32° / 24°286.711.84.7
Jul32° / 24°142.511.84.8
Aug33° / 24°30.511.94.4
Sep34° / 25°20.4124.3
Oct33° / 25°50.912.14.2
Nov33° / 25°61.312.14.1
Dec33° / 25°23612.24.0

Chance of rain

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

Marco gets about 934 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 5.1 months, from around Dec 29 to Jun 1, peaking in March at about 90% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 29.

April is the wettest month by volume, with 262 mm over about 25 wet days; September is the driest, with 2 mm.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainoften wetvery wetMar 31 · 90%Aug 29 · 1%
Rain on a day (%)Rain days
Jan5517
Feb7521
Mar8526
Apr8425
May5517
Jun237
Jul83
Aug21
Sep20
Oct31
Nov41
Dec216

Monthly rainfall

Over a full year, Marco collects about 934 mm of rain across 126 wet days — roughly 78 mm in an average month.

It doesn’t fall evenly. April is the wettest month with 262 mm, while September is the driest at just 2 mm. The three wettest months alone bring about 68% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec1031452312621132814325623
Rainfall (mm)Rain days
Jan10317
Feb14521
Mar23126
Apr26225
May11317
Jun287
Jul143
Aug31
Sep20
Oct51
Nov61
Dec236

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Marco, 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 27 and lasts for 6.9 months, ending around December 21. The clearest month is September, when the sky is clear, mostly clear, or partly cloudy 96% of the time on average.

The cloudier part of the year begins around December 22 and lasts for 5.1 months, ending around May 26. The cloudiest month is April, when it is overcast or mostly cloudy 78% 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 20 · 97%Apr 1 · 16%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearer
Clearer (%)Cloudier (%)
Jan4060
Feb2971
Mar2377
Apr2278
May5149
Jun7525
Jul8515
Aug937
Sep964
Oct8614
Nov7327
Dec6337

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, Marco barely changes through the year: days stay near 12 h 12 min of light in every season.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.25:455:55
Feb12.15:525:58
Mar12.05:505:51
Apr11.95:435:39
May11.95:415:33
Jun11.85:465:35
Jul11.85:515:41
Aug11.95:485:42
Sep12.05:355:34
Oct12.15:245:28
Nov12.15:225:30
Dec12.25:315:42

Sunny days

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

Marco averages about 14 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 1 and 26 days.

The sunnier stretch runs 6.4 months, from around Jun 4 to Dec 16. The sunniest month is September, with roughly 26 sunny days (brilliant).

The greyest month is March, down near 3 sunny days — about 89% fewer than the September peak.

051015202530JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergloomymixedbrightbrilliantSep 1126 daysMar 301 days
Sunny daysSky
Jan6Gloomy
Feb4Gloomy
Mar3Gloomy
Apr3Gloomy
May9Mixed
Jun16Bright
Jul21Bright
Aug25Brilliant
Sep25Brilliant
Oct23Bright
Nov16Bright
Dec13Mixed

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.

Marco 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%JanFebMarAprMayJunJulAugSepOctNovDecmiserableoppressivemuggy
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan02925
Feb008416
Mar007327
Apr006634
May007525
Jun012862
Jul148510
Aug171270
Sep067330
Oct050500
Nov024760
Dec08920

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 Marco is typically light breeze, near 16 km/h, and varies a lot with the seasons.

The windier part of the year lasts 6.1 months, from around Jun 29 to Dec 31. The windiest month is September, averaging about 21 km/h (breezy).

The calmer part of the year runs from around Jan 1 to Jun 28, with March the calmest month at about 10 km/h.

0510152025JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmlight breezebreezySep 16 · 21 km/hMar 30 · 10 km/h
Wind speed (km/h)Feels
Jan14light breeze
Feb12calm
Mar10calm
Apr10calm
May12calm
Jun15light breeze
Jul17light breeze
Aug19light breeze
Sep21breezy
Oct20breezy
Nov19light breeze
Dec17light breeze

Hazard calendar for Marco

In seasonPeak

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

Marco's monsoon runs February–April, 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 Marco

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid December, Marco 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 Marco for general outdoor tourist activities is from mid May to late December, with a peak score in the last week of June.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 23 · 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
Jan3.4poor
Feb3.2poor
Mar3.0poor
Apr3.0poor
May3.9fair
Jun4.7fair
Jul4.8fair
Aug4.4fair
Sep4.3fair
Oct4.2fair
Nov4.1fair
Dec4.0fair

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 Marco for hot-weather activities is from late May to late December, with a peak score in the first week of September.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationSep 2 · 8.1

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 Marco, 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.

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

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In September, Marco sees daytime highs around 34°C and nights near 25°C. Pack light clothes and sun protection. Worth having: a windbreaker.

Sea temperature near Marco

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 41 km away) is warmest in April at about 29°C and coldest in August near 27°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
Jan28Tropical
Feb28Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun28Tropical
Jul27Warm
Aug27Warm
Sep27Warm
Oct27Warm
Nov28Warm
Dec28Tropical

UV index (midday) in Marco 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 Marco peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 16UV 15Jun 23UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec11Extreme

Average hourly UV index in Marco

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
Feb86.5
Mar8.56.5
Apr86.5
May7.55.5
Jun7.55
Jul7.55
Aug7.55.5
Sep7.56
Oct86
Nov86
Dec7.55.5
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Marco 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. Marco banks about 6,636 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)
Jan563
Feb490
Mar531
Apr509
May540
Jun532
Jul561
Aug581
Sep571
Oct595
Nov576
Dec588

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.

Marco receives about 5.7 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.7 and 6.9 kWh/m².

The brighter stretch of the year lasts 5.3 months, from around Jul 24 to Dec 31. The brightest month is October, averaging about 6.8 kWh/m² (intense).

The dimmest month is April, down near 4.7 kWh/m² — roughly 31% less than the October peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmoderatebrightintenseOct 26.9 kWhApr 234.7 kWh
Solar energy (kWh/m²)Level
Jan5.5Bright
Feb5.3Bright
Mar5.0Bright
Apr4.7Bright
May4.9Bright
Jun5.1Bright
Jul5.5Bright
Aug6.3Intense
Sep6.8Intense
Oct6.8Intense
Nov6.5Intense
Dec6.0Intense

Where is Marco?

Marco sits at 3.1°S, 40.1°W, 22 m above sea level, in Brazil. The nearest listed city is Bela Cruz, 8.0 km away.

Topography around Marco

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

Within 3 km, the terrain around Marco has only modest variations in elevation — a maximum elevation change of 58 m around an average of 24 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 129 m; within 80 km, large variations in elevation — a maximum elevation change of 1,010 m.

The land around Marco is covered by grassland (48%) and trees (33%) within 3 km, trees (38%), grassland (35%) and shrubs (26%) within 16 km, and shrubs (31%), water (27%) and trees (21%) within 80 km.

3 km
58 m
16 km
129 m
80 km
1,010 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwatermangroves
Nearby: Bela Cruz 8.0 km · Morrinhos 12 km · Acaraú 27 km · Itarema 34 km · Santana do Acaraú 38 km · Jijoca de Jericoacoara 42 km · Amontada 44 km · Massapê 49 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 Marco (-3.1239°, -40.1467°, elevation 22 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).