Climate and average weather in Cajari

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

Best: early June to late September

Over the course of the year, the temperature in Cajari typically varies from 24°C to 34°C, and is rarely below 23°C or above 36°C. October is the hottest month of the year, while March is the coldest.

Based on the travel score, the best time of year to visit Cajari for warm-weather activities is from early June to late September.

Hottest
Oct
34°
Coldest
Mar
24°
Wettest
Apr
367 mm
Driest
Sep
9 mm
Rain / yr
1708 mm
186 wet days
Daylight
11.8–12.2 h
shortest–longest
Elevation
10 m
3.3°S
Clearest
Aug
37% cloud

Cajari 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 June to late September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Cajari stay fairly even through the year, without a distinct hot or cool season. The warmest month is October, with an average high of 34°C and low of 25°C; the coolest is March, with an average low of 24°C and high of 31°C.

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

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3225
Feb3124
Mar3124
Apr3124
May3125
Jun3124
Jul3224
Aug3324
Sep3425
Oct3425
Nov3425
Dec3325

How hot and cold Cajari 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, Cajari feels like about 39°C (around October 10). Nearly every day a year carries some heat stress, and 40 of them tip into dangerous heat (feels-like above 39°C), peaking in October.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan37322525
Feb37312424
Mar37312424
Apr38312424
May39312525
Jun37312424
Jul37322424
Aug38332424
Sep39342525
Oct39342525
Nov39342525
Dec38332525

Average hourly temperature in Cajari

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 34°C, and coldest before dawn in March, near 24°C.

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

Cajari 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°20524.412.22.7
Feb31° / 24°27925.512.12.5
Mar31° / 24°35529.5122.4
Apr31° / 24°36728.211.92.4
May31° / 25°20223.411.93.0
Jun31° / 24°7914.511.83.9
Jul32° / 24°5010.111.84.4
Aug33° / 24°153.911.94.2
Sep34° / 25°92123.7
Oct34° / 25°183.512.13.3
Nov34° / 25°396.612.23.3
Dec33° / 25°911412.23.1

Chance of rain

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

Cajari gets about 1708 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 5.7 months, from around Dec 20 to Jun 10, peaking in March at about 96% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Sep 11.

April is the wettest month by volume, with 367 mm over about 28 wet days; September is the driest, with 9 mm.

0%10%20%30%40%50%60%70%80%90%100%110%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainoften wetvery wetMar 26 · 96%Sep 11 · 6%
Rain on a day (%)Rain days
Jan7924
Feb9126
Mar9530
Apr9328
May7623
Jun4915
Jul3310
Aug124
Sep72
Oct124
Nov217
Dec4614

Monthly rainfall

Over a full year, Cajari collects about 1708 mm of rain across 186 wet days — roughly 142 mm in an average month.

It doesn’t fall evenly. April is the wettest month with 367 mm, while September is the driest at just 9 mm. The three wettest months alone bring about 59% of the year’s total.

050100150200250300350400JanFebMarAprMayJunJulAugSepOctNovDec2052793553672027950159183991
Rainfall (mm)Rain days
Jan20524
Feb27926
Mar35530
Apr36728
May20223
Jun7915
Jul5010
Aug154
Sep92
Oct184
Nov397
Dec9114

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Cajari, 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 30 and lasts for 5.9 months, ending around November 26. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 90% of the time on average.

The cloudier part of the year begins around November 27 and lasts for 6.0 months, ending around May 29. The cloudiest month is March, when it is overcast or mostly cloudy 90% 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 26 · 91%Mar 31 · 7%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan1783
Feb1486
Mar1090
Apr1288
May3565
Jun6535
Jul8119
Aug9010
Sep8812
Oct7525
Nov5446
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, Cajari 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)
Jan12.26:046:15
Feb12.16:116:18
Mar12.06:096:10
Apr11.96:025:58
May11.96:015:52
Jun11.86:065:55
Jul11.86:116:00
Aug11.96:076:01
Sep12.05:555:54
Oct12.15:435:47
Nov12.25:415:50
Dec12.25:506:02

Sunny days

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

Cajari 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 5.2 months, from around Jun 8 to Nov 13. The sunniest month is September, with roughly 20 sunny days (bright).

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

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantSep 121 daysMar 290 days
Sunny daysSky
Jan2Gloomy
Feb1Gloomy
Mar1Gloomy
Apr1Gloomy
May4Gloomy
Jun10Mixed
Jul16Bright
Aug20Bright
Sep19Bright
Oct15Mixed
Nov9Mixed
Dec6Gloomy

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.

Cajari 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
Muggy (%)Oppressive (%)Miserable (%)
Jan06238
Feb05248
Mar04357
Apr02872
May02080
Jun04456
Jul46630
Aug48114
Sep4923
Oct3952
Nov1918
Dec07921

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

The windier part of the year lasts 5.1 months, from around Aug 3 to Jan 3. The windiest month is October, averaging about 13 km/h (light breeze).

The calmer part of the year runs from around Jan 4 to Aug 2, with April the calmest month at about 6 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmlight breezeOct 11 · 13 km/hApr 12 · 6 km/h
Wind speed (km/h)Feels
Jan8calm
Feb7calm
Mar7calm
Apr6calm
May7calm
Jun8calm
Jul8calm
Aug10calm
Sep12light breeze
Oct13light breeze
Nov12light breeze
Dec11calm

Hazard calendar for Cajari

In seasonPeak

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

Cajari'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 Cajari

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid September, Cajari 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 Cajari for general outdoor tourist activities is from early June to mid September, with a peak score in the last week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 28 · 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
Jan2.7poor
Feb2.5poor
Mar2.4poor
Apr2.4poor
May3.0poor
Jun3.9fair
Jul4.4fair
Aug4.2fair
Sep3.7fair
Oct3.3poor
Nov3.3poor
Dec3.1poor

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 Cajari for hot-weather activities is from mid June to early December, with a peak score in the third week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 17 · 7.5

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 Cajari, 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.

Cajari packs about the same all year — highs hold near 34°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, Cajari sees daytime highs around 34°C and nights near 25°C. Pack light clothes and sun protection. About 4 days see rain.

UV index (midday) in Cajari 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 Cajari peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Jul 15UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov10Extreme
Dec11Extreme

Average hourly UV index in Cajari

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
May7.55.5
Jun7.55.5
Jul7.55
Aug7.55.5
Sep7.55.5
Oct86
Nov7.55.5
Dec7.55.5

Air quality in Cajari 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 Cajari is worst in November — around 18 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (June, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1918 µg/m³Jun 199 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar16Moderate
Apr14Moderate
May10Good
Jun9Good
Jul9Good
Aug10Good
Sep9Good
Oct13Moderate
Nov18Moderate
Dec16Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Cajari 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. Cajari banks about 6,718 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around October.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan561
Feb497
Mar547
Apr532
May556
Jun531
Jul548
Aug576
Sep583
Oct611
Nov586
Dec590

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.

Cajari receives about 5.2 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.2 and 6.2 kWh/m².

The brighter stretch of the year lasts 5.4 months, from around Jul 18 to Dec 27. The brightest month is October, averaging about 6.2 kWh/m² (intense).

The dimmest month is April, down near 4.2 kWh/m² — roughly 32% less than the October peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmoderatebrightintenseOct 56.2 kWhApr 214.2 kWh
Solar energy (kWh/m²)Level
Jan4.8Bright
Feb4.6Bright
Mar4.3Bright
Apr4.2Bright
May4.5Bright
Jun4.8Bright
Jul5.1Bright
Aug5.7Bright
Sep6.1Intense
Oct6.2Intense
Nov5.9Bright
Dec5.5Bright

Where is Cajari?

Cajari sits at 3.3°S, 45.0°W, 10 m above sea level, in Brazil. The nearest listed city is Viana, 11 km away.

Topography around Cajari

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

Within 3 km, the terrain around Cajari has only modest variations in elevation — a maximum elevation change of 28 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 55 m; within 80 km, only modest variations in elevation — a maximum elevation change of 169 m.

The land around Cajari is covered by grassland (65%) within 3 km, grassland (44%), trees (26%) and wetland (22%) within 16 km, and grassland (45%) and trees (37%) within 80 km.

3 km
28 m
16 km
55 m
80 km
169 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
Nearby: Viana 11 km · Penalva 18 km · Vitória do Mearim 22 km · Matinha 25 km · Arari 30 km · Monção 33 km · Anajatuba 44 km · São João Batista 47 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 Cajari (-3.3208°, -45.0108°, elevation 10 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).