Piracicaba in Summer
In summer (December, January and February), Piracicaba sees average daytime highs around 30°C and overnight lows near 21°C, with 631 mm of rain over about 61 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 30°C. The sky is clear or mostly clear about 18% of the time across summer, and the air most often feels muggy.
Summer is Piracicaba's weakest season of the year to visit on our travel score. For the whole year in context, see Piracicaba's year-round climate.
- Avg daytime high
- 30°C
- warmest season of the year
- Avg overnight low
- 21°C
- Rainfall
- 631 mm
- 61 wet days
- Avg wind
- 8 km/h
- Travel score
- 3.7
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Piracicaba in Summer
Across summer, daytime highs hold fairly steady around 30°C.
A typical summer day in Piracicaba reaches about 30°C and drops to 21°C overnight. The warmest of the three months is February, the coolest December.
How summer really feels in Piracicaba
Once humidity and wind are folded in, summer brings about 29 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Piracicaba weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| 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 |
Cloud cover in Summer
The sky is clear or mostly clear about 18% of the time across summer.
Chance of precipitation in Summer
Piracicaba gets around 631 mm of rain over 61 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 8 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 18 min in early December to 12 h 30 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.8 kWh/m².
Hazard calendar for Piracicaba
In summer, Piracicaba overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Piracicaba's monsoon runs November–March, when most of the year's rain falls.
Is summer a good time to visit Piracicaba?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Piracicaba.
What to pack for Piracicaba in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Piracicaba sees daytime highs around 30°C and nights near 21°C. Pack light clothes, rain gear and sun protection. About 61 days see rain.
UV index in Piracicaba in Summer
Clear-sky midday UV across summer averages around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
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 |
Air quality in Piracicaba in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual 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 |
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.