Climate and average weather in Jacarezinho

In Jacarezinho, the weather is humid, hot, wet, and mostly cloudy and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around January.

Best: mid April to late September

Over the course of the year, the temperature in Jacarezinho typically varies from 13°C to 30°C, and is rarely below 9°C or above 34°C. January is the hottest month of the year, while June is the coldest.

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

Hottest
Jan
30°
Coldest
Jun
14°
Wettest
Jan
225 mm
Driest
Aug
46 mm
Rain / yr
1316 mm
135 wet days
Daylight
10.6–13.4 h
shortest–longest
Elevation
448 m
23.2°S
Clearest
Aug
37% cloud

Jacarezinho 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 April to late September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Jacarezinho stay fairly even through the year, without a distinct hot or cool season. The warmest month is January, with an average high of 30°C and low of 21°C; the coolest is June, with an average low of 14°C and high of 24°C.

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

10°15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3021
Feb3021
Mar2920
Apr2818
May2515
Jun2414
Jul2413
Aug2614
Sep2816
Oct2918
Nov2919
Dec3020

Average hourly temperature in Jacarezinho

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 January afternoons, near 30°C, and coldest before dawn in June, near 14°C.

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

Jacarezinho 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° / 21°22520.813.33.8
Feb30° / 21°16718.112.84.0
Mar29° / 20°11915.412.24.6
Apr28° / 18°637.411.56.4
May25° / 15°736.910.97.4
Jun24° / 14°645.910.67.9
Jul24° / 13°484.810.78.1
Aug26° / 14°464.811.27.8
Sep28° / 16°948.211.96.8
Oct29° / 18°11611.712.55.4
Nov29° / 19°1351313.14.9
Dec30° / 20°16717.713.44.2

Chance of rain

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

Jacarezinho gets about 1316 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 5.6 months, from around Oct 13 to Mar 30, peaking in January at about 67% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 17.

January is the wettest month by volume, with 225 mm over about 21 wet days; August is the driest, with 46 mm.

0%10%20%30%40%50%60%70%80%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetJan 12 · 67%Aug 17 · 15%
Rain on a day (%)Rain days
Jan6621
Feb6418
Mar5015
Apr267
May227
Jun206
Jul165
Aug165
Sep278
Oct3812
Nov4313
Dec5718

Monthly rainfall

Over a full year, Jacarezinho collects about 1316 mm of rain across 135 wet days — roughly 110 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 225 mm, while August is the driest at just 46 mm. The three wettest months alone bring about 42% of the year’s total.

050100150200250JanFebMarAprMayJunJulAugSepOctNovDec225167119637364484694116135167
Rainfall (mm)Rain days
Jan22521
Feb16718
Mar11915
Apr637
May737
Jun646
Jul485
Aug465
Sep948
Oct11612
Nov13513
Dec16718

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Jacarezinho, 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 March 26 and lasts for 6.1 months, ending around September 27. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 70% of the time on average.

The cloudier part of the year begins around September 28 and lasts for 5.9 months, ending around March 25. The cloudiest month is January, when it is overcast or mostly cloudy 71% 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 · 73%Jan 8 · 28%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2971
Feb3763
Mar4852
Apr5842
May5446
Jun6139
Jul6733
Aug7030
Sep6040
Oct4159
Nov3961
Dec3664

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 13 h 24 min of light; the shortest, around June 5, only 10 h 36 min — a swing of roughly 2 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan13.36:518:08
Feb12.87:117:58
Mar12.27:257:35
Apr11.57:367:04
May10.97:496:43
Jun10.68:036:38
Jul10.78:046:47
Aug11.27:487:00
Sep11.97:187:10
Oct12.56:487:21
Nov13.16:317:39
Dec13.46:347:59

Sunny days

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

Jacarezinho averages about 11 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 4 and 19 days.

The sunnier stretch runs 5.9 months, from around Apr 3 to Sep 30. The sunniest month is August, with roughly 18 sunny days (bright).

The greyest month is January, down near 5 sunny days — about 74% fewer than the August peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 2619 daysJan 114 days
Sunny daysSky
Jan5Gloomy
Feb5Gloomy
Mar9Mixed
Apr13Mixed
May13Mixed
Jun15Bright
Jul17Bright
Aug18Bright
Sep14Mixed
Oct8Mixed
Nov8Gloomy
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.

In Jacarezinho, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 6.7 months, from around October 7 to April 27. The muggiest month is February, when the air feels humid, muggy or worse about 99% of the time.

The most comfortable stretch runs from around April 28 to October 6, and August is the most comfortable month — the air is dry or comfortable 88% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecAug 3 · 90%Feb 21 · 1%oppressivehumidmuggycomfortabledryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan02124342
Feb01134343
Mar04204927
Apr51934384
May21363580
Jun28452520
Jul42441400
Aug45431110
Sep27392690
Oct92234331
Nov61631408
Dec07214625

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 Jacarezinho is steady company: average speeds sit near 9 km/hcalm — in every month of the year, with no meaningful windy or calm season.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeSep 23 · 11 km/hFeb 10 · 8 km/h
Wind speed (km/h)Feels
Jan8calm
Feb8calm
Mar9calm
Apr9calm
May9calm
Jun9calm
Jul9calm
Aug10calm
Sep11calm
Oct11calm
Nov10calm
Dec9calm

Hazard calendar for Jacarezinho

In seasonPeak

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

Jacarezinho's rainy season runs October–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Best time to visit Jacarezinho

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around late April, Jacarezinho 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 Jacarezinho for general outdoor tourist activities is from mid April to late September, with a peak score in the third week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 17 · 8.2

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
Jan3.8fair
Feb4.0fair
Mar4.7fair
Apr6.4good
May7.4good
Jun7.9ideal
Jul8.1ideal
Aug7.8ideal
Sep6.8good
Oct5.5fair
Nov4.9fair
Dec4.2fair

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 Jacarezinho for hot-weather activities is from late March to late November, with a peak score in the last week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 27 · 7.8

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 Jacarezinho, 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.

Jacarezinho packs about the same all year — highs hold near 30°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 January, Jacarezinho sees daytime highs around 30°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

UV index (midday) in Jacarezinho 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 Jacarezinho peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 22UV 15Jul 12UV 5
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec13Extreme

Average hourly UV index in Jacarezinho

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 January the burn window is concentrated in the middle of the day: about 9 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)
Jan97
Feb8.57
Mar86
Apr74.5
May62.5
Jun50
Jul50
Aug63
Sep6.54
Oct85.5
Nov8.56.5
Dec97

Air quality in Jacarezinho 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 Jacarezinho is worst in September — around 18 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1517 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar7Good
Apr8Good
May9Good
Jun9Good
Jul10Good
Aug13Moderate
Sep18Moderate
Oct12Good
Nov7Good
Dec7Good
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Jacarezinho 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. Jacarezinho banks about 4,581 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.

01,0002,0003,0004,0005,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan473
Feb426
Mar459
Apr397
May315
Jun269
Jul272
Aug317
Sep357
Oct410
Nov421
Dec464

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.

Jacarezinho receives about 4.9 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.4 and 6.0 kWh/m².

The brighter stretch of the year lasts 7.0 months, from around Aug 27 to Mar 28. The brightest month is November, averaging about 5.9 kWh/m² (bright).

The dimmest month is June, down near 3.4 kWh/m² — roughly 43% less than the November peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseNov 266.0 kWhJun 83.4 kWh
Solar energy (kWh/m²)Level
Jan5.6Bright
Feb5.5Bright
Mar5.1Bright
Apr4.6Bright
May3.7Moderate
Jun3.3Moderate
Jul3.7Moderate
Aug4.6Bright
Sep5.2Bright
Oct5.6Bright
Nov5.9Bright
Dec6.0Bright

Where is Jacarezinho?

Jacarezinho sits at 23.2°S, 50.0°W, 448 m above sea level, in Brazil. The nearest listed city is Cambará, 17 km away.

Topography around Jacarezinho

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

Within 3 km, the terrain around Jacarezinho has only modest variations in elevation — a maximum elevation change of 198 m around an average of 494 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 521 m; within 80 km, large variations in elevation — a maximum elevation change of 787 m.

The land around Jacarezinho is covered by grassland (45%), trees (23%) and artificial surfaces (22%) within 3 km, cropland (37%), grassland (36%) and trees (25%) within 16 km, and cropland (50%), grassland (26%) and trees (20%) within 80 km.

3 km
198 m
16 km
521 m
80 km
787 m
treesgrasslandcroplandartificial surfaceswater
Nearby: Cambará 17 km · Santo Antônio da Platina 19 km · Ourinhos 23 km · Andirá 29 km · Carlópolis 39 km · Bandeirantes 41 km · Santa Cruz do Rio Pardo 45 km · Palmital 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 Jacarezinho (-23.1606°, -49.9694°, elevation 448 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).