Climate and average weather in Icó

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

Best: late April to late August

Over the course of the year, the temperature in Icó typically varies from 21°C to 36°C, and is rarely below 20°C or above 37°C. November is the hottest month of the year, while April is the coldest.

Based on the travel score, the best time of year to visit Icó for warm-weather activities is from late April to late August.

Hottest
Nov
36°
Coldest
Apr
23°
Wettest
Mar
187 mm
Driest
Sep
1 mm
Rain / yr
748 mm
89 wet days
Daylight
11.6–12.4 h
shortest–longest
Elevation
156 m
6.4°S
Clearest
Sep
27% cloud

Icó is human settlement in Brazil.

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

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

Temperatures in Icó stay fairly even through the year, without a distinct hot or cool season. The warmest month is November, with an average high of 36°C and low of 24°C; the coolest is April, with an average low of 23°C and high of 31°C.

Days typically run about 10°C warmer than nights, with the widest day–night swing (around 12°C) in September.

15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3324
Feb3223
Mar3223
Apr3123
May3123
Jun3122
Jul3221
Aug3322
Sep3523
Oct3624
Nov3624
Dec3524

How hot and cold Icó 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, Icó feels like about 37°C (around December 5). Nearly every day a year carries some heat stress, peaking in December.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan36332424
Feb35322323
Mar35322323
Apr35312323
May34312323
Jun33312222
Jul32322121
Aug33332122
Sep35352323
Oct36362424
Nov36362424
Dec36352424

Average hourly temperature in Icó

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 November afternoons, near 36°C, and coldest before dawn in April, near 23°C.

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

Icó 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
Jan33° / 24°12814.612.32.9
Feb32° / 23°14315.612.23.1
Mar32° / 23°18720.1123.2
Apr31° / 23°13416.311.93.6
May31° / 23°708.811.74.4
Jun31° / 22°243.611.65.0
Jul32° / 21°102.111.74.9
Aug33° / 22°30.511.84.3
Sep35° / 23°10.4123.4
Oct36° / 24°11112.12.9
Nov36° / 24°61.212.32.7
Dec35° / 24°304.612.42.8

Chance of rain

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

Icó gets about 748 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 4.8 months, from around Dec 28 to May 23, peaking in March at about 69% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 31.

March is the wettest month by volume, with 187 mm over about 20 wet days; September is the driest, with 1 mm.

0%10%20%30%40%50%60%70%80%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainoften wetvery wetMar 24 · 69%Aug 31 · 1%
Rain on a day (%)Rain days
Jan4615
Feb5616
Mar6420
Apr5516
May299
Jun134
Jul72
Aug11
Sep10
Oct31
Nov41
Dec155

Monthly rainfall

Over a full year, Icó collects about 748 mm of rain across 89 wet days — roughly 62 mm in an average month.

It doesn’t fall evenly. March is the wettest month with 187 mm, while September is the driest at just 1 mm. The three wettest months alone bring about 62% of the year’s total.

050100150200JanFebMarAprMayJunJulAugSepOctNovDec1281431871347024103111630
Rainfall (mm)Rain days
Jan12815
Feb14316
Mar18720
Apr13416
May709
Jun244
Jul102
Aug31
Sep10
Oct111
Nov61
Dec305

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Icó, 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 June 26 and lasts for 5.5 months, ending around December 10. The clearest month is September, when the sky is clear, mostly clear, or partly cloudy 89% of the time on average.

The cloudier part of the year begins around December 11 and lasts for 5.4 months, ending around May 23. The cloudiest month is February, when it is overcast or mostly cloudy 58% 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 23 · 91%Feb 15 · 39%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearer
Clearer (%)Cloudier (%)
Jan4555
Feb4258
Mar4951
Apr4654
May5743
Jun6040
Jul6733
Aug8020
Sep8911
Oct8119
Nov6733
Dec6040

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 June 4, 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)
Jan12.35:355:55
Feb12.25:445:56
Mar12.05:445:46
Apr11.95:405:31
May11.75:405:23
Jun11.65:475:25
Jul11.75:515:31
Aug11.85:465:33
Sep12.05:315:29
Oct12.15:165:25
Nov12.35:125:30
Dec12.45:215:43

Sunny days

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

Icó averages about 13 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 7 and 24 days.

The sunnier stretch runs 5.5 months, from around Jun 28 to Dec 10. The sunniest month is September, with roughly 22 sunny days (bright).

The greyest month is March, down near 7 sunny days — about 67% fewer than the September peak.

051015202530JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergloomymixedbrightbrilliantSep 2724 daysMar 257 days
Sunny daysSky
Jan8Gloomy
Feb7Gloomy
Mar7Gloomy
Apr7Gloomy
May10Mixed
Jun11Mixed
Jul15Mixed
Aug20Bright
Sep22Bright
Oct20Bright
Nov14Mixed
Dec12Mixed

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 Icó, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 7.7 months, from around November 14 to July 4. The muggiest month is February, when the air feels humid, muggy or worse about 100% of the time.

The most comfortable stretch runs from around July 5 to November 13, and September is the most comfortable month — the air is dry or comfortable 46% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecSep 1 · 50%Feb 21 · 0%oppressivemuggyhumidcomfortablehumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan03194038
Feb0073756
Mar0042274
Apr0022572
May01114939
Jun0537517
Jul12451231
Aug2415150
Sep3434950
Oct13251132
Nov11459261
Dec0847378

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 Icó is typically calm, near 11 km/h, and varies moderately with the seasons.

The windier part of the year lasts 6.5 months, from around Jun 2 to Dec 15. The windiest month is August, averaging about 16 km/h (light breeze).

The calmer part of the year runs from around Dec 16 to Jun 1, with March the calmest month at about 7 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmlight breezeAug 4 · 16 km/hMar 27 · 7 km/h
Wind speed (km/h)Feels
Jan9calm
Feb8calm
Mar7calm
Apr7calm
May10calm
Jun13light breeze
Jul15light breeze
Aug16light breeze
Sep15light breeze
Oct13light breeze
Nov12light breeze
Dec11calm

Hazard calendar for Icó

In seasonPeak

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

Icó's monsoon runs January–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 Icó

TravelBeach/poolTemperatureCloudsPrecipitation

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

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

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 15 · 5.0

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
Feb3.1poor
Mar3.2poor
Apr3.6fair
May4.4fair
Jun5.0fair
Jul4.9fair
Aug4.3fair
Sep3.4poor
Oct2.9poor
Nov2.7poor
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 Icó for hot-weather activities is from early May to late October, with a peak score in the first week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 6 · 7.9

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 Icó, 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.

Icó packs about the same all year — highs hold near 36°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 November, Icó sees daytime highs around 36°C and nights near 24°C. Pack light clothes and sun protection.

UV index (midday) in Icó 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 Icó peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 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 13UV 15Jul 15UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme

Average hourly UV index in Icó

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 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)
Jan8.56.5
Feb8.56.5
Mar8.57
Apr86
May7.55.5
Jun75
Jul75
Aug7.55
Sep86
Oct86
Nov86
Dec86
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Icó 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. Icó banks about 6,591 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)
Jan576
Feb500
Mar541
Apr515
May528
Jun498
Jul515
Aug540
Sep561
Oct607
Nov597
Dec612

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.

Icó receives about 6.0 kWh/m² a day of solar energy on average — intense — with a clear seasonal swing between 4.9 and 7.2 kWh/m².

The brighter stretch of the year lasts 5.0 months, from around Aug 13 to Jan 11. The brightest month is October, averaging about 7.2 kWh/m² (intense).

The dimmest month is June, down near 4.9 kWh/m² — roughly 31% less than the October peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmoderatebrightintenseOct 47.2 kWhJun 174.9 kWh
Solar energy (kWh/m²)Level
Jan6.0Intense
Feb6.1Intense
Mar5.8Bright
Apr5.5Bright
May5.2Bright
Jun4.9Bright
Jul5.2Bright
Aug6.2Intense
Sep6.9Intense
Oct7.2Intense
Nov7.0Intense
Dec6.6Intense

Where is Icó?

Icó sits at 6.4°S, 38.9°W, 156 m above sea level, in Brazil. The nearest listed city is Orós, 18 km away.

Topography around Icó

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

Within 3 km, the terrain around Icó has only modest variations in elevation — a maximum elevation change of 94 m around an average of 164 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 552 m; within 80 km, large variations in elevation — a maximum elevation change of 772 m.

The land around Icó is covered by grassland (39%), shrubs (23%) and cropland (22%) within 3 km, shrubs (60%) and grassland (26%) within 16 km, and shrubs (57%) and grassland (31%) within 80 km.

3 km
94 m
16 km
552 m
80 km
772 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
Nearby: Orós 18 km · Cedro 32 km · Lavras da Mangabeira 41 km · Quixelô 41 km · São Miguel 46 km · Iguatu 48 km · São João do Rio do Peixe 58 km · Pereiro 60 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 Icó (-6.4011°, -38.8622°, elevation 156 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).