Climate and average weather in Piracicaba
In Piracicaba, the weather is humid, hot, wet, and partly cloudy and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around January.
Over the course of the year, the temperature in Piracicaba typically varies from 13°C to 30°C, and is rarely below 9°C or above 36°C. February is the hottest month of the year, while June is the coldest.
Based on the travel score, the best time of year to visit Piracicaba for warm-weather activities is from late April to early September.
- Hottest
- Feb
- 30°
- Coldest
- Jun
- 14°
- Wettest
- Jan
- 255 mm
- Driest
- Aug
- 30 mm
- Rain / yr
- 1290 mm
- 139 wet days
- Daylight
- 10.6–13.4 h
- shortest–longest
- Elevation
- 530 m
- 22.7°S
- Clearest
- Aug
- 35% cloud
- Air quality
- Moderate
- PM2.5 13 µg/m³ · 2019
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Piracicaba 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 early September.
Temperature through the year
Daily average highs and lows in Piracicaba, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
Temperatures in Piracicaba stay fairly even through the year, without a distinct hot or cool season. The warmest month is February, 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 25°C.
Days typically run about 11°C warmer than nights, with the widest day–night swing (around 13°C) in August.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 30 | 29 | 26 | 25 | 25 | 27 | 29 | 30 | 30 | 30 |
| Avg low (°C) | 21 | 21 | 20 | 18 | 15 | 14 | 13 | 14 | 16 | 18 | 19 | 20 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 30 | 21 |
| Feb | 30 | 21 |
| Mar | 30 | 20 |
| Apr | 29 | 18 |
| May | 26 | 15 |
| Jun | 25 | 14 |
| Jul | 25 | 13 |
| Aug | 27 | 14 |
| Sep | 29 | 16 |
| Oct | 30 | 18 |
| Nov | 30 | 19 |
| Dec | 30 | 20 |
How hot and cold Piracicaba really feels
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, Piracicaba feels like about 32°C (around January 31). About 30 days a year carry some heat stress, peaking in January.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 32 | 32 | 31 | 29 | 26 | 25 | 25 | 27 | 29 | 30 | 30 | 31 |
| Air high (°C) | 30 | 30 | 30 | 29 | 26 | 25 | 25 | 27 | 29 | 30 | 30 | 30 |
| Feels-like low (°C) | 21 | 21 | 20 | 18 | 15 | 14 | 13 | 14 | 16 | 18 | 19 | 20 |
| Air low (°C) | 21 | 21 | 20 | 18 | 15 | 14 | 13 | 14 | 16 | 18 | 19 | 20 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 32 | 30 | 21 | 21 |
| Feb | 32 | 30 | 21 | 21 |
| Mar | 31 | 30 | 20 | 20 |
| Apr | 29 | 29 | 18 | 18 |
| May | 26 | 26 | 15 | 15 |
| Jun | 25 | 25 | 14 | 14 |
| Jul | 25 | 25 | 13 | 13 |
| Aug | 27 | 27 | 14 | 14 |
| Sep | 29 | 29 | 16 | 16 |
| Oct | 30 | 30 | 18 | 18 |
| Nov | 30 | 30 | 19 | 19 |
| Dec | 31 | 30 | 20 | 20 |
Average hourly temperature in Piracicaba
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 30°C, and coldest before dawn in June, near 14°C.
Piracicaba weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 30° / 21° | 255 | 22.3 | 13.2 | 3.6 |
| Feb | 30° / 21° | 186 | 19 | 12.8 | 3.7 |
| Mar | 30° / 20° | 144 | 17.1 | 12.2 | 4.4 |
| Apr | 29° / 18° | 53 | 7.3 | 11.5 | 6.2 |
| May | 26° / 15° | 52 | 6 | 10.9 | 7.5 |
| Jun | 25° / 14° | 38 | 4.5 | 10.6 | 8.0 |
| Jul | 25° / 13° | 31 | 3.8 | 10.7 | 8.1 |
| Aug | 27° / 14° | 30 | 3.9 | 11.2 | 7.6 |
| Sep | 29° / 16° | 61 | 8.1 | 11.9 | 6.0 |
| Oct | 30° / 18° | 104 | 12.1 | 12.5 | 4.9 |
| Nov | 30° / 19° | 148 | 15 | 13.1 | 4.5 |
| Dec | 30° / 20° | 190 | 19.9 | 13.4 | 3.8 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Piracicaba gets about 1290 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 15 to Apr 1, peaking in January at about 72% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 4.
January is the wettest month by volume, with 255 mm over about 22 wet days; August is the driest, with 30 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 71 | 67 | 54 | 26 | 20 | 15 | 12 | 13 | 26 | 39 | 50 | 64 |
| Rain days | 22 | 19 | 17 | 7 | 6 | 5 | 4 | 4 | 8 | 12 | 15 | 20 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 71 | 22 |
| Feb | 67 | 19 |
| Mar | 54 | 17 |
| Apr | 26 | 7 |
| May | 20 | 6 |
| Jun | 15 | 5 |
| Jul | 12 | 4 |
| Aug | 13 | 4 |
| Sep | 26 | 8 |
| Oct | 39 | 12 |
| Nov | 50 | 15 |
| Dec | 64 | 20 |
Monthly rainfall
Over a full year, Piracicaba collects about 1290 mm of rain across 139 wet days — roughly 107 mm in an average month.
It doesn’t fall evenly. January is the wettest month with 255 mm, while August is the driest at just 30 mm. The three wettest months alone bring about 49% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 255 | 186 | 144 | 53 | 52 | 38 | 31 | 30 | 61 | 104 | 148 | 190 |
| Rain days | 22 | 19 | 17 | 7 | 6 | 5 | 4 | 4 | 8 | 12 | 15 | 20 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 255 | 22 |
| Feb | 186 | 19 |
| Mar | 144 | 17 |
| Apr | 53 | 7 |
| May | 52 | 6 |
| Jun | 38 | 5 |
| Jul | 31 | 4 |
| Aug | 30 | 4 |
| Sep | 61 | 8 |
| Oct | 104 | 12 |
| Nov | 148 | 15 |
| Dec | 190 | 20 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Piracicaba, 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 27 and lasts for 6.0 months, ending around September 25. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 72% of the time on average.
The cloudier part of the year begins around September 26 and lasts for 6.0 months, ending around March 26. The cloudiest month is January, when it is overcast or mostly cloudy 69% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 31 | 38 | 49 | 62 | 59 | 65 | 68 | 72 | 61 | 42 | 40 | 36 |
| Cloudier (%) | 69 | 62 | 51 | 38 | 41 | 35 | 32 | 28 | 39 | 58 | 60 | 64 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 31 | 69 |
| Feb | 38 | 62 |
| Mar | 49 | 51 |
| Apr | 62 | 38 |
| May | 59 | 41 |
| Jun | 65 | 35 |
| Jul | 68 | 32 |
| Aug | 72 | 28 |
| Sep | 61 | 39 |
| Oct | 42 | 58 |
| Nov | 40 | 60 |
| Dec | 36 | 64 |
Daylight, sunrise and sunset
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 9, only 10 h 36 min — a swing of roughly 2 h 48 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.2 | 12.8 | 12.2 | 11.5 | 10.9 | 10.6 | 10.7 | 11.2 | 11.9 | 12.5 | 13.1 | 13.4 |
| Sunrise (AM) | 6:42 | 7:02 | 7:15 | 7:27 | 7:39 | 7:52 | 7:54 | 7:38 | 7:09 | 6:40 | 6:23 | 6:25 |
| Sunset (PM) | 7:57 | 7:49 | 7:25 | 6:55 | 6:34 | 6:29 | 6:38 | 6:51 | 7:01 | 7:12 | 7:29 | 7:48 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 13.2 | 6:42 | 7:57 |
| Feb | 12.8 | 7:02 | 7:49 |
| Mar | 12.2 | 7:15 | 7:25 |
| Apr | 11.5 | 7:27 | 6:55 |
| May | 10.9 | 7:39 | 6:34 |
| Jun | 10.6 | 7:52 | 6:29 |
| Jul | 10.7 | 7:54 | 6:38 |
| Aug | 11.2 | 7:38 | 6:51 |
| Sep | 11.9 | 7:09 | 7:01 |
| Oct | 12.5 | 6:40 | 7:12 |
| Nov | 13.1 | 6:23 | 7:29 |
| Dec | 13.4 | 6:25 | 7:48 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Piracicaba 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 20 days.
The sunnier stretch runs 5.9 months, from around Apr 1 to Sep 27. The sunniest month is August, with roughly 19 sunny days (bright).
The greyest month is January, down near 5 sunny days — about 74% fewer than the August peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 5 | 6 | 10 | 14 | 14 | 16 | 17 | 19 | 14 | 9 | 7 | 6 |
| Sky | Gloomy | Gloomy | Mixed | Mixed | Mixed | Bright | Bright | Bright | Mixed | Mixed | Gloomy | Gloomy |
| Sunny days | Sky | |
|---|---|---|
| Jan | 5 | Gloomy |
| Feb | 6 | Gloomy |
| Mar | 10 | Mixed |
| Apr | 14 | Mixed |
| May | 14 | Mixed |
| Jun | 16 | Bright |
| Jul | 17 | Bright |
| Aug | 19 | Bright |
| Sep | 14 | Mixed |
| Oct | 9 | Mixed |
| Nov | 7 | Gloomy |
| Dec | 6 | Gloomy |
Humidity comfort
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 Piracicaba, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 6.6 months, from around October 9 to April 27. The muggiest month is March, when the air feels humid, muggy or worse about 98% of the time.
The most comfortable stretch runs from around April 28 to October 8, and July is the most comfortable month — the air is dry or comfortable 94% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 0 | 0 | 0 | 5 | 23 | 36 | 55 | 61 | 37 | 12 | 5 | 1 |
| Comfortable (%) | 2 | 2 | 2 | 19 | 39 | 46 | 38 | 30 | 33 | 23 | 17 | 5 |
| Humid (%) | 12 | 10 | 18 | 34 | 32 | 18 | 6 | 9 | 24 | 39 | 32 | 22 |
| Muggy (%) | 53 | 54 | 60 | 39 | 6 | 1 | 0 | 1 | 7 | 26 | 42 | 55 |
| Oppressive (%) | 33 | 33 | 20 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 17 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| Jan | 0 | 2 | 12 | 53 | 33 |
| Feb | 0 | 2 | 10 | 54 | 33 |
| Mar | 0 | 2 | 18 | 60 | 20 |
| Apr | 5 | 19 | 34 | 39 | 4 |
| May | 23 | 39 | 32 | 6 | 0 |
| Jun | 36 | 46 | 18 | 1 | 0 |
| Jul | 55 | 38 | 6 | 0 | 0 |
| Aug | 61 | 30 | 9 | 1 | 0 |
| Sep | 37 | 33 | 24 | 7 | 0 |
| Oct | 12 | 23 | 39 | 26 | 1 |
| Nov | 5 | 17 | 32 | 42 | 5 |
| Dec | 1 | 5 | 22 | 55 | 17 |
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 Piracicaba is steady company: average speeds sit near 8 km/h — calm — in every month of the year, with no meaningful windy or calm season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 8 | 7 | 8 | 8 | 8 | 8 | 8 | 9 | 10 | 10 | 9 | 9 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 8 | calm |
| Feb | 7 | calm |
| Mar | 8 | calm |
| Apr | 8 | calm |
| May | 8 | calm |
| Jun | 8 | calm |
| Jul | 8 | calm |
| Aug | 9 | calm |
| Sep | 10 | calm |
| Oct | 10 | calm |
| Nov | 9 | calm |
| Dec | 9 | calm |
Hazard calendar for Piracicaba
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Piracicaba's monsoon runs November–March, when most of the year's rain falls.
Best time to visit Piracicaba
To characterize how pleasant the weather is in Piracicaba throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late April, Piracicaba 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 Piracicaba for general outdoor tourist activities is from late April to early September, with a peak score in the second week of July.
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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 3.6 | 3.7 | 4.4 | 6.2 | 7.4 | 8.0 | 8.1 | 7.6 | 6.0 | 4.9 | 4.5 | 3.9 |
| Rating | fair | fair | fair | good | good | ideal | ideal | ideal | good | fair | fair | fair |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 3.6 | fair |
| Feb | 3.7 | fair |
| Mar | 4.4 | fair |
| Apr | 6.2 | good |
| May | 7.4 | good |
| Jun | 8.0 | ideal |
| Jul | 8.1 | ideal |
| Aug | 7.6 | ideal |
| Sep | 6.0 | good |
| Oct | 4.9 | fair |
| Nov | 4.5 | fair |
| Dec | 3.9 | fair |
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 Piracicaba for hot-weather activities is from late March to mid October, with a peak score in the last week of August.
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 Piracicaba, by month
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.
Piracicaba 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.
In February, Piracicaba sees daytime highs around 30°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.
UV index (midday) in Piracicaba by month
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 Piracicaba peaks around January 20 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 14 | 12 | 9 | 7 | 6 | 5 | 8 | 8 | 11 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | High | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 14 | Extreme |
| Mar | 12 | Extreme |
| Apr | 9 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 5 | High |
| Aug | 8 | Very high |
| Sep | 8 | Very high |
| Oct | 11 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Average hourly UV index in Piracicaba
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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 9 | 8.5 | 8 | 7 | 5.5 | 5 | 5 | 6.5 | 7 | 8 | 8.5 | 8.5 |
| UV ≥ 6 (h/day) | 7 | 7 | 6 | 4.5 | 2 | 0 | 0 | 3.5 | 4 | 5.5 | 6.5 | 6.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 9 | 7 |
| Feb | 8.5 | 7 |
| Mar | 8 | 6 |
| Apr | 7 | 4.5 |
| May | 5.5 | 2 |
| Jun | 5 | 0 |
| Jul | 5 | 0 |
| Aug | 6.5 | 3.5 |
| Sep | 7 | 4 |
| Oct | 8 | 5.5 |
| Nov | 8.5 | 6.5 |
| Dec | 8.5 | 6.5 |
Air quality in Piracicaba by month
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 Piracicaba is worst in September — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 9 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Piracicaba's WHO annual average of 13 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 9 | 10 | 10 | 11 | 13 | 14 | 15 | 20 | 21 | 15 | 9 | 9 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 10 | Good |
| Mar | 10 | Good |
| Apr | 11 | Good |
| May | 13 | Moderate |
| Jun | 14 | Moderate |
| Jul | 15 | Moderate |
| Aug | 20 | Moderate |
| Sep | 21 | Moderate |
| Oct | 15 | Moderate |
| Nov | 9 | Good |
| Dec | 9 | Good |
Growing season
Piracicaba is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
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. Piracicaba banks about 4,675 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around February.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 475 | 429 | 456 | 397 | 323 | 281 | 285 | 329 | 376 | 429 | 428 | 467 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 475 |
| Feb | 429 |
| Mar | 456 |
| Apr | 397 |
| May | 323 |
| Jun | 281 |
| Jul | 285 |
| Aug | 329 |
| Sep | 376 |
| Oct | 429 |
| Nov | 428 |
| Dec | 467 |
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.
Piracicaba receives about 5.1 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.6 and 6.1 kWh/m².
The brighter stretch of the year lasts 7.1 months, from around Aug 27 to Mar 29. The brightest month is November, averaging about 6.0 kWh/m² (bright).
The dimmest month is June, down near 3.6 kWh/m² — roughly 40% less than the November peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.7 | 5.8 | 5.3 | 4.8 | 3.9 | 3.6 | 3.8 | 4.7 | 5.3 | 5.8 | 6.0 | 6.0 |
| Level | Bright | Bright | Bright | Bright | Moderate | Moderate | Moderate | Bright | Bright | Bright | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 5.7 | Bright |
| Feb | 5.8 | Bright |
| Mar | 5.3 | Bright |
| Apr | 4.8 | Bright |
| May | 3.9 | Moderate |
| Jun | 3.6 | Moderate |
| Jul | 3.8 | Moderate |
| Aug | 4.7 | Bright |
| Sep | 5.3 | Bright |
| Oct | 5.8 | Bright |
| Nov | 6.0 | Intense |
| Dec | 6.0 | Intense |
Where is Piracicaba?
Piracicaba sits at 22.7°S, 47.6°W, 530 m above sea level, in Brazil. The nearest listed city is Rio das Pedras, 14 km away.
Topography around Piracicaba
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Piracicaba.
Within 3 km, the terrain around Piracicaba has only modest variations in elevation — a maximum elevation change of 129 m around an average of 525 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 296 m; within 80 km, large variations in elevation — a maximum elevation change of 634 m.
The land around Piracicaba is covered by artificial surfaces (73%) and trees (20%) within 3 km, cropland (45%) and trees (24%) within 16 km, and cropland (39%), trees (31%) and grassland (23%) within 80 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
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 Piracicaba (-22.7253°, -47.6492°, elevation 530 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).