Climate and average weather in Cunha

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

Best: mid April to late September

Over the course of the year, the temperature in Cunha typically varies from 12°C to 27°C, and is rarely below 9°C or above 31°C. February is the hottest month of the year, while July is the coldest.

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

Hottest
Feb
27°
Coldest
Jul
12°
Wettest
Jan
268 mm
Driest
Jun
36 mm
Rain / yr
1445 mm
182 wet days
Daylight
10.6–13.4 h
shortest–longest
Elevation
953 m
23.1°S
Clearest
Aug
43% cloud

Cunha is human settlement in Brazil.

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

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

Temperatures in Cunha stay fairly even through the year, without a distinct hot or cool season. The warmest month is February, with an average high of 27°C and low of 19°C; the coolest is July, with an average low of 12°C and high of 22°C.

Days typically run about 9°C warmer than nights year-round.

10°15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2719
Feb2719
Mar2618
Apr2517
May2314
Jun2213
Jul2212
Aug2313
Sep2415
Oct2516
Nov2517
Dec2618

Average hourly temperature in Cunha

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 February afternoons, near 27°C, and coldest before dawn in July, near 12°C.

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

Cunha 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
Jan27° / 19°26825.913.34.1
Feb27° / 19°18421.512.84.4
Mar26° / 18°17322.112.24.8
Apr25° / 17°7812.911.56.4
May23° / 14°589.410.96.9
Jun22° / 13°366.510.67.4
Jul22° / 12°446.210.77.4
Aug23° / 13°386.511.27.7
Sep24° / 15°8511.311.96.8
Oct25° / 16°11316.512.55.7
Nov25° / 17°15419.713.15.1
Dec26° / 18°2142313.44.5

Chance of rain

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

Cunha gets about 1445 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 5.9 months, from around Oct 10 to Apr 7, peaking in January at about 84% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jun 20.

January is the wettest month by volume, with 268 mm over about 26 wet days; June is the driest, with 36 mm.

0%10%20%30%40%50%60%70%80%90%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetJan 20 · 84%Jun 20 · 19%
Rain on a day (%)Rain days
Jan8226
Feb7722
Mar7022
Apr4313
May319
Jun217
Jul216
Aug227
Sep3711
Oct5417
Nov6520
Dec7523

Monthly rainfall

Over a full year, Cunha collects about 1445 mm of rain across 182 wet days — roughly 120 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 268 mm, while June is the driest at just 36 mm. The three wettest months alone bring about 46% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec268184173785836443885113154214
Rainfall (mm)Rain days
Jan26826
Feb18422
Mar17322
Apr7813
May589
Jun367
Jul446
Aug387
Sep8511
Oct11317
Nov15420
Dec21423

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Cunha, 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 April 4 and lasts for 5.6 months, ending around September 21. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 65% of the time on average.

The cloudier part of the year begins around September 22 and lasts for 6.4 months, ending around April 3. The cloudiest month is January, when it is overcast or mostly cloudy 76% 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 19 · 66%Jan 8 · 23%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2476
Feb3268
Mar3862
Apr5347
May5446
Jun6238
Jul6337
Aug6535
Sep5050
Oct3367
Nov2872
Dec2575

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 6, 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)
Jan13.36:317:47
Feb12.86:517:38
Mar12.27:057:14
Apr11.57:166:44
May10.97:296:23
Jun10.67:426:18
Jul10.77:446:27
Aug11.27:286:40
Sep11.96:586:50
Oct12.56:297:01
Nov13.16:117:19
Dec13.46:147:38

Sunny days

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

Cunha averages about 9 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 3 and 16 days.

The sunnier stretch runs 5.4 months, from around Apr 11 to Sep 21. The sunniest month is July, with roughly 15 sunny days (bright).

The greyest month is January, down near 3 sunny days — about 79% fewer than the July peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightJul 2916 daysJan 33 days
Sunny daysSky
Jan3Gloomy
Feb4Gloomy
Mar6Gloomy
Apr9Mixed
May11Mixed
Jun14Mixed
Jul16Bright
Aug16Bright
Sep10Mixed
Oct5Gloomy
Nov4Gloomy
Dec3Gloomy

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

The more humid part of the year lasts 6.5 months, from around October 11 to April 26. The muggiest month is January, when the air feels humid, muggy or worse about 98% of the time.

The most comfortable stretch runs from around April 27 to October 10, and July is the most comfortable month — the air is dry or comfortable 99% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 16 · 99%Jan 12 · 1%muggycomfortablehumiddryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan0232660
Feb0230671
Mar0541540
Apr32552200
May26492410
Jun4845700
Jul6435100
Aug5739400
Sep30482210
Oct11314990
Nov52353190
Dec0844480

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 Cunha is steady company: average speeds sit near 5 km/hcalm — in every month of the year, with no meaningful windy or calm season.

0510JanFebMarAprMayJunJulAugSepOctNovDeccalmSep 21 · 6 km/hFeb 28 · 5 km/h
Wind speed (km/h)Feels
Jan5calm
Feb5calm
Mar5calm
Apr5calm
May5calm
Jun5calm
Jul5calm
Aug6calm
Sep6calm
Oct6calm
Nov6calm
Dec6calm

Hazard calendar for Cunha

In seasonPeak

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

Cunha's rainy season runs November–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 Cunha

TravelBeach/poolTemperatureCloudsPrecipitation

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

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

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationAug 20 · 7.7

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
Jan4.1fair
Feb4.4fair
Mar4.8fair
Apr6.4good
May6.9good
Jun7.4good
Jul7.4good
Aug7.6ideal
Sep6.8good
Oct5.7good
Nov5.1fair
Dec4.5fair

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best times of year to visit Cunha for hot-weather activities run from late March to mid May and again from late July to late October, with a peak score in the first week of September.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationSep 1 · 6.3

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 Cunha, 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.

Cunha packs about the same all year — highs hold near 27°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 February, Cunha sees daytime highs around 27°C and nights near 19°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

Sea temperature near Cunha

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 35 km away) is warmest in February at about 27°C and coldest in August near 21°C.

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

20°22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb27Warm
Mar27Warm
Apr26Warm
May24Refreshing
Jun23Refreshing
Jul22Refreshing
Aug21Refreshing
Sep22Refreshing
Oct22Refreshing
Nov23Refreshing
Dec25Warm

UV index (midday) in Cunha 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 Cunha peaks around January 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 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 21UV 14Jul 11UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Average hourly UV index in Cunha

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
Feb97
Mar86
Apr74.5
May62.5
Jun5.50
Jul50
Aug6.53.5
Sep6.53.5
Oct86
Nov8.56.5
Dec97

Air quality in Cunha 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 Cunha is worst in September — around 18 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (March, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1517 µg/m³Mar 149 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb9Good
Mar9Good
Apr10Good
May12Good
Jun13Moderate
Jul13Moderate
Aug14Moderate
Sep18Moderate
Oct12Moderate
Nov10Good
Dec9Good
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Cunha 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. Cunha banks about 3,704 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around February.

01,0002,0003,0004,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan394
Feb358
Mar374
Apr322
May257
Jun219
Jul216
Aug245
Sep280
Oct327
Nov332
Dec378

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.

Cunha receives about 4.7 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.4 and 5.7 kWh/m².

The brighter stretch of the year lasts 6.9 months, from around Aug 30 to Mar 26. The brightest month is February, averaging about 5.6 kWh/m² (bright).

The dimmest month is May, down near 3.7 kWh/m² — roughly 34% less than the February peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseFeb 55.7 kWhMay 313.4 kWh
Solar energy (kWh/m²)Level
Jan5.5Bright
Feb5.7Bright
Mar4.9Bright
Apr4.4Bright
May3.7Moderate
Jun3.5Moderate
Jul3.6Moderate
Aug4.4Bright
Sep4.7Bright
Oct5.2Bright
Nov5.4Bright
Dec5.6Bright

Where is Cunha?

Cunha sits at 23.1°S, 45.0°W, 953 m above sea level, in Brazil. The nearest listed city is Paraty, 30 km away.

Topography around Cunha

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

Within 3 km, the terrain around Cunha has significant variations in elevation — a maximum elevation change of 269 m around an average of 940 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 945 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,761 m.

The land around Cunha is covered by grassland (60%) and trees (32%) within 3 km, grassland (61%) and trees (38%) within 16 km, and trees (45%), grassland (26%) and water (26%) within 80 km.

3 km
269 m
16 km
945 m
80 km
2,761 m
treesgrasslandcroplandartificial surfaceswater
Nearby: Paraty 30 km · Guaratinguetá 37 km · Aparecida 37 km · Potim 39 km · Ubatuba 42 km · Lorena 42 km · Cachoeira Paulista 46 km · Pindamonhangaba 54 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 Cunha (-23.0744°, -44.9597°, elevation 953 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).