Climate and average weather in Piranhas

In Piranhas, the summers are humid, sweltering, fairly dry, and partly cloudy and the winters are warm and partly cloudy.

Best: late May to late September

Over the course of the year, the temperature in Piranhas typically varies from 20°C to 34°C, and is rarely below 18°C or above 37°C. December is the hottest month of the year, while July is the coldest.

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

Hottest
Dec
34°
Coldest
Jul
20°
Wettest
Mar
48 mm
Driest
Oct
10 mm
Rain / yr
334 mm
78 wet days
Daylight
11.4–12.6 h
shortest–longest
Elevation
73 m
9.6°S
Clearest
Oct
46% cloud

Piranhas 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 May to late September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Piranhas stay fairly even through the year, without a distinct hot or cool season. The warmest month is December, with an average high of 34°C and low of 23°C; the coolest is July, with an average low of 20°C and high of 28°C.

Days typically run about 10°C warmer than nights, with the widest day–night swing (around 11°C) in November.

15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3423
Feb3424
Mar3424
Apr3223
May3022
Jun2821
Jul2820
Aug2820
Sep3121
Oct3322
Nov3423
Dec3423

How hot and cold Piranhas 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, Piranhas feels like about 37°C (around March 11). About 248 days a year carry some heat stress, peaking in March.

15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan36342323
Feb37342324
Mar37342324
Apr35322323
May33302222
Jun30282121
Jul29282020
Aug30282020
Sep32312121
Oct34332222
Nov36342323
Dec36342323

Average hourly temperature in Piranhas

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 December afternoons, near 34°C, and coldest before dawn in July, near 20°C.

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

Piranhas 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
Jan34° / 23°345.312.53.2
Feb34° / 24°366.412.33.3
Mar34° / 24°487.712.13.4
Apr32° / 23°38811.84.0
May30° / 22°399.911.64.9
Jun28° / 21°3310.811.45.8
Jul28° / 20°3011.111.56.2
Aug28° / 20°217.611.76.1
Sep31° / 21°124.311.95.3
Oct33° / 22°102.112.24.3
Nov34° / 23°152.212.43.5
Dec34° / 23°19312.63.3

Chance of rain

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

Piranhas gets about 334 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 5.7 months, from around Mar 10 to Aug 28, peaking in July at about 37% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Oct 25.

March is the wettest month by volume, with 48 mm over about 8 wet days; October is the driest, with 10 mm.

0%10%20%30%40%50%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetJul 6 · 37%Oct 25 · 6%
Rain on a day (%)Rain days
Jan175
Feb226
Mar258
Apr288
May3210
Jun3611
Jul3511
Aug258
Sep154
Oct72
Nov72
Dec103

Monthly rainfall

Over a full year, Piranhas collects about 334 mm of rain across 78 wet days — roughly 28 mm in an average month.

It doesn’t fall evenly. March is the wettest month with 48 mm, while October is the driest at just 10 mm. The three wettest months alone bring about 38% of the year’s total.

0255075JanFebMarAprMayJunJulAugSepOctNovDec343648383933302112101519
Rainfall (mm)Rain days
Jan345
Feb366
Mar488
Apr388
May3910
Jun3311
Jul3011
Aug218
Sep124
Oct102
Nov152
Dec193

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Piranhas, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.

The clearer part of the year begins around September 9 and lasts for 3.8 months, ending around January 3. The clearest month is October, when the sky is clear, mostly clear, or partly cloudy 67% of the time on average.

The cloudier part of the year begins around April 15 and lasts for 4.8 months, ending around September 8. The cloudiest month is August, when it is overcast or mostly cloudy 51% 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 26 · 71%Jul 22 · 46%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearer
Clearer (%)Cloudier (%)
Jan5545
Feb5545
Mar5842
Apr5545
May5248
Jun5545
Jul4951
Aug4951
Sep6337
Oct6733
Nov6436
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 36 min of light; the shortest, around June 12, only 11 h 24 min — a swing of roughly 1 h 12 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.55:255:55
Feb12.35:365:55
Mar12.15:395:43
Apr11.85:385:25
May11.65:405:14
Jun11.45:485:15
Jul11.55:525:21
Aug11.75:455:26
Sep11.95:275:24
Oct12.25:105:23
Nov12.45:035:30
Dec12.65:105:44

Sunny days

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

Piranhas 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 14 days.

The sunnier stretch runs 7.0 months, from around Sep 15 to Apr 14. The sunniest month is October, with roughly 13 sunny days (mixed).

The greyest month is July, down near 4 sunny days — about 65% fewer than the October peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightOct 114 daysJul 253 days
Sunny daysSky
Jan10Mixed
Feb9Mixed
Mar11Mixed
Apr8Mixed
May7Gloomy
Jun5Gloomy
Jul4Gloomy
Aug5Gloomy
Sep10Mixed
Oct13Mixed
Nov12Mixed
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.

Piranhas 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 85% of the time. Even in September, 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%JanFebMarAprMayJunJulAugSepOctNovDecoppressivemuggyhumid
Humid (%)Muggy (%)Oppressive (%)
Jan156915
Feb67024
Mar45937
Apr25246
May25939
Jun58311
Jul20783
Aug32670
Sep36640
Oct37612
Nov32653
Dec24705

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 Piranhas is typically light breeze, near 14 km/h, and varies little with the seasons.

The windier part of the year lasts 4.6 months, from around Jul 15 to Dec 1. The windiest month is October, averaging about 16 km/h (light breeze).

The calmer part of the year runs from around Dec 29 to Jul 14, with March the calmest month at about 13 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeOct 6 · 16 km/hMar 21 · 13 km/h
Wind speed (km/h)Feels
Jan14light breeze
Feb14light breeze
Mar13light breeze
Apr13light breeze
May13light breeze
Jun14light breeze
Jul14light breeze
Aug15light breeze
Sep16light breeze
Oct16light breeze
Nov15light breeze
Dec14light breeze

Best time to visit Piranhas

TravelBeach/poolTemperatureCloudsPrecipitation

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

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

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationAug 3 · 6.4

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
Jan3.2poor
Feb3.2poor
Mar3.3poor
Apr4.0fair
May4.9fair
Jun5.7good
Jul6.2good
Aug6.1good
Sep5.3fair
Oct4.3fair
Nov3.5poor
Dec3.3poor

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, Piranhas suits hot-weather activities for most of the year, with a peak score in the last week of September.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbeach/pool scoretemperaturecloudsprecipitationSep 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 Piranhas, 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.

For a warm-season trip around December (highs near 34°C), the essentials are light clothes and sun protection. In the cold season around July (highs near 28°C), pack light clothes and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In December, Piranhas sees daytime highs around 34°C and nights near 23°C. Pack light clothes and sun protection. About 3 days see rain.

UV index (midday) in Piranhas 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 Piranhas peaks around February 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 20UV 15Jul 12UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug10Very high
Sep11Extreme
Oct13Extreme
Nov12Extreme
Dec12Extreme

Average hourly UV index in Piranhas

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 February 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
Feb8.57
Mar86.5
Apr86
May7.55
Jun75
Jul74.5
Aug75
Sep7.55.5
Oct86
Nov86
Dec86
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Piranhas 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. Piranhas banks about 6,152 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around December.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan582
Feb523
Mar575
Apr530
May499
Jun438
Jul427
Aug437
Sep470
Oct538
Nov553
Dec582

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.

Piranhas receives about 5.5 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.7 and 6.7 kWh/m².

The brighter stretch of the year lasts 6.8 months, from around Sep 18 to Apr 13. The brightest month is December, averaging about 6.6 kWh/m² (intense).

The dimmest month is June, down near 3.8 kWh/m² — roughly 42% less than the December peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 26.7 kWhJun 233.7 kWh
Solar energy (kWh/m²)Level
Jan6.4Intense
Feb6.3Intense
Mar6.2Intense
Apr5.4Bright
May4.3Bright
Jun3.8Moderate
Jul3.8Moderate
Aug4.4Bright
Sep5.4Bright
Oct6.3Intense
Nov6.6Intense
Dec6.6Intense

Where is Piranhas?

Piranhas sits at 9.6°S, 37.8°W, 73 m above sea level, in Brazil. The nearest listed city is Canindé de São Francisco, 5.0 km away.

Topography around Piranhas

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

Within 3 km, the terrain around Piranhas has only modest variations in elevation — a maximum elevation change of 215 m around an average of 133 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 520 m; within 80 km, large variations in elevation — a maximum elevation change of 835 m.

The land around Piranhas is covered by shrubs (54%) and grassland (27%) within 3 km, shrubs (48%) and grassland (34%) within 16 km, and grassland (53%) and shrubs (31%) within 80 km.

3 km
215 m
16 km
520 m
80 km
835 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
Nearby: Canindé de São Francisco 5.0 km · Poço Redondo 22 km · Delmiro Gouveia 37 km · Pão de Açúcar 38 km · São José da Tapera 42 km · Inhapi 45 km · Água Branca 45 km · Olho d'Água das Flores 52 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 Piranhas (-9.6236°, -37.7567°, elevation 73 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).