Piracicaba climate — normals and trends
Piracicaba (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 21.6 °C and it receives 1,319 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is January (24.2 °C on average) and the coldest is July (17.8 °C). Rainfall peaks in January.
Piracicaba averages 0 frost days, 91 hot days (≥ 30 °C) and 145 rainy days per year.
Piracicaba has warmed by +2.5 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.9 °C (on 20 January 2015) and the coldest 1.8 °C (on 30 July 2021).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
PiracicabaSão Paulo
- coords
- -22.73°, -47.65°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
21.6°C
Average daily high
27.4°C
Average daily low
16.8°C
Annual rainfall
1,319mm
Sunshine / day
9.8h
Mean relative humidity
74%
Average peak wind
13.5km/h
Seasonal range
6.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
91 d/yr
Rainy days (≥ 1 mm)
145 d/yr
Annual snowfall
0.0 cm
Average feels-like high
29.5 °C
Average feels-like low
17.5 °C
Average peak gust
30.1 km/h
Tropical nights (≥ 20 °C)
82 d/yr
Solar radiation
18.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.68 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
40.9 °C
20 January 2015
Coldest day
1.8 °C
30 July 2021
Wettest day
123 mm
8 February 1995
Windiest day
34.0 km/h
10 December 2025
Strongest gust
81.4 km/h
22 September 2025
Hottest feels-like
43.4 °C
20 January 2015
Coldest feels-like
-1.5 °C
10 July 1994
Sunniest day
13.4 h
21 December 1952
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 31.2 °C | +2.1 °C | 175 mm | -49 mm |
| Feb | 32.7 °C | +3.5 °C | 95 mm | -96 mm |
| Mar | 33.1 °C | +4.3 °C | 75 mm | -72 mm |
| Apr | 28.9 °C | +1.5 °C | 114 mm | +51 mm |
| May | 27.2 °C | +2.2 °C | 9 mm | -48 mm |
| Jun | 24.9 °C | +0.8 °C | 41 mm | +2 mm |
| Jul | 25.0 °C | +0.6 °C | 6 mm | -28 mm |
| Aug | 27.9 °C | +1.3 °C | 1 mm | -30 mm |
| Sep | 30.6 °C | +2.4 °C | 15 mm | -47 mm |
| Oct | 28.8 °C | +0.4 °C | 91 mm | -33 mm |
| Nov | 29.1 °C | +0.6 °C | 84 mm | -60 mm |
| Dec | 31.3 °C | +2.6 °C | 223 mm | +19 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Piracicaba?
Piracicaba has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.6 °C and it receives 1,319 mm of precipitation per year.
What is the hottest day ever recorded in Piracicaba?
The hottest day measured in Piracicaba between 1940 and 2025 was 20 January 2015, reaching 40.9 °C.
What is the coldest day in Piracicaba?
The coldest day measured in Piracicaba between 1940 and 2025 was 30 July 2021, at 1.8 °C.
Does it snow in Piracicaba?
Almost never: Piracicaba sees virtually no snow, with about 0 frost days per year.
Has the climate of Piracicaba warmed?
Yes: Piracicaba warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Piracicaba?
The wettest day measured in Piracicaba between 1940 and 2025 was 8 February 1995, with 123 mm of rain in 24 hours.
What was the windiest day in Piracicaba?
The windiest day measured in Piracicaba between 1940 and 2025 was 10 December 2025, with winds reaching 34.0 km/h.
What is the warmest month in Piracicaba?
The warmest month in Piracicaba is January (24.2 °C on average); the coldest is July (17.8 °C).
How much does it rain in Piracicaba?
Piracicaba receives on average 1,319 mm of precipitation per year, spread over about 145 rainy days.
Is it sunny in Piracicaba?
Piracicaba gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
Are there tropical nights in Piracicaba?
Yes: Piracicaba has on average 82 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Piracicaba?
In Piracicaba, between 1940 and 2025, the highest apparent temperature reached 43.4 °C on 20 January 2015, and the lowest was -1.5 °C on 10 July 1994.
Compare Piracicaba with another city
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Nearby cities
The climate around Piracicaba