Aguaí climate — normals and trends
Aguaí (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 21.5 °C and it receives 1,315 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 February (23.7 °C on average) and the coldest is July (17.8 °C). Rainfall peaks in January.
Aguaí averages 0 frost days, 73 hot days (≥ 30 °C) and 151 rainy days per year.
Aguaí has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.1 °C (on 19 October 2014) and the coldest 1.2 °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
AguaíSão Paulo
- coords
- -22.06°, -46.98°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
21.5°C
Average daily high
27.1°C
Average daily low
16.7°C
Annual rainfall
1,315mm
Sunshine / day
10.0h
Mean relative humidity
71%
Average peak wind
12.0km/h
Seasonal range
5.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
73 d/yr
Rainy days (≥ 1 mm)
151 d/yr
Annual snowfall
0.0 cm
Average feels-like high
29.1 °C
Average feels-like low
17.2 °C
Average peak gust
29.1 km/h
Tropical nights (≥ 20 °C)
62 d/yr
Solar radiation
18.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.72 · 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
39.1 °C
19 October 2014
Coldest day
1.2 °C
30 July 2021
Wettest day
105 mm
28 March 1991
Windiest day
31.1 km/h
15 September 1956
Strongest gust
78.5 km/h
28 November 1950
Hottest feels-like
41.8 °C
18 January 2015
Coldest feels-like
-2.0 °C
21 July 1981
Sunniest day
13.4 h
20 December 1942
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 30.2 °C | +1.8 °C | 139 mm | -81 mm |
| Feb | 31.3 °C | +2.7 °C | 80 mm | -99 mm |
| Mar | 31.3 °C | +3.1 °C | 66 mm | -77 mm |
| Apr | 28.2 °C | +1.1 °C | 81 mm | +10 mm |
| May | 27.0 °C | +2.1 °C | 7 mm | -48 mm |
| Jun | 25.3 °C | +1.1 °C | 31 mm | -3 mm |
| Jul | 25.3 °C | +0.9 °C | 2 mm | -26 mm |
| Aug | 28.1 °C | +1.4 °C | 3 mm | -24 mm |
| Sep | 30.6 °C | +2.2 °C | 31 mm | -30 mm |
| Oct | 29.2 °C | +0.7 °C | 124 mm | -2 mm |
| Nov | 28.9 °C | +0.7 °C | 133 mm | -26 mm |
| Dec | 30.1 °C | +2.1 °C | 164 mm | -48 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 Aguaí?
Aguaí has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.5 °C and it receives 1,315 mm of precipitation per year.
What is the hottest day ever recorded in Aguaí?
The hottest day measured in Aguaí between 1940 and 2025 was 19 October 2014, reaching 39.1 °C.
What is the coldest day in Aguaí?
The coldest day measured in Aguaí between 1940 and 2025 was 30 July 2021, at 1.2 °C.
Does it snow in Aguaí?
Almost never: Aguaí sees virtually no snow, with about 0 frost days per year.
Has the climate of Aguaí warmed?
Yes: Aguaí warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Aguaí?
The wettest day measured in Aguaí between 1940 and 2025 was 28 March 1991, with 105 mm of rain in 24 hours.
What was the windiest day in Aguaí?
The windiest day measured in Aguaí between 1940 and 2025 was 15 September 1956, with winds reaching 31.1 km/h.
What is the warmest month in Aguaí?
The warmest month in Aguaí is February (23.7 °C on average); the coldest is July (17.8 °C).
How much does it rain in Aguaí?
Aguaí receives on average 1,315 mm of precipitation per year, spread over about 151 rainy days.
Is it sunny in Aguaí?
Aguaí gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
Are there tropical nights in Aguaí?
Yes: Aguaí has on average 62 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Aguaí?
In Aguaí, between 1940 and 2025, the highest apparent temperature reached 41.8 °C on 18 January 2015, and the lowest was -2.0 °C on 21 July 1981.
Compare Aguaí with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Aguaí