Promissão climate — normals and trends
Promissão (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 23.5 °C and it receives 1,233 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 (25.5 °C on average) and the coldest is June (19.9 °C). Rainfall peaks in January.
Promissão averages 0 frost days, 135 hot days (≥ 30 °C) and 136 rainy days per year.
Promissão has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The hottest day of the period reached 41.5 °C (on 7 October 2020) and the coldest 1.5 °C (on 21 July 1981).
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
PromissãoSão Paulo
- coords
- -21.54°, -49.86°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
23.5°C
Average daily high
28.8°C
Average daily low
19.1°C
Annual rainfall
1,233mm
Sunshine / day
10.0h
Mean relative humidity
71%
Average peak wind
14.0km/h
Seasonal range
5.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
135 d/yr
Rainy days (≥ 1 mm)
136 d/yr
Annual snowfall
0.0 cm
Average feels-like high
31.3 °C
Average feels-like low
20.2 °C
Average peak gust
30.6 km/h
Tropical nights (≥ 20 °C)
175 d/yr
Solar radiation
18.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.2 °C per decade · r² = 0.65 · 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
41.5 °C
7 October 2020
Coldest day
1.5 °C
21 July 1981
Wettest day
139 mm
27 October 1964
Windiest day
35.4 km/h
7 June 2011
Strongest gust
78.1 km/h
30 July 1989
Hottest feels-like
44.5 °C
29 October 2007
Coldest feels-like
-2.1 °C
18 July 1975
Sunniest day
13.1 h
12 December 2024
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 | 31.7 °C | +2.0 °C | 178 mm | -34 mm |
| Feb | 31.8 °C | +2.0 °C | 118 mm | -59 mm |
| Mar | 32.9 °C | +3.3 °C | 45 mm | -90 mm |
| Apr | 29.0 °C | +0.3 °C | 117 mm | +55 mm |
| May | 27.7 °C | +1.3 °C | 16 mm | -34 mm |
| Jun | 26.1 °C | +0.4 °C | 40 mm | +6 mm |
| Jul | 26.5 °C | +0.3 °C | 1 mm | -24 mm |
| Aug | 29.3 °C | +0.6 °C | 3 mm | -21 mm |
| Sep | 32.9 °C | +2.6 °C | 13 mm | -42 mm |
| Oct | 31.3 °C | +1.0 °C | 49 mm | -68 mm |
| Nov | 30.9 °C | +0.9 °C | 104 mm | -37 mm |
| Dec | 31.8 °C | +2.2 °C | 119 mm | -84 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 Promissão?
Promissão has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 23.5 °C and it receives 1,233 mm of precipitation per year.
What is the hottest day ever recorded in Promissão?
The hottest day measured in Promissão between 1940 and 2025 was 7 October 2020, reaching 41.5 °C.
What is the coldest day in Promissão?
The coldest day measured in Promissão between 1940 and 2025 was 21 July 1981, at 1.5 °C.
Does it snow in Promissão?
Almost never: Promissão sees virtually no snow, with about 0 frost days per year.
Has the climate of Promissão warmed?
Yes: Promissão warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Promissão?
The wettest day measured in Promissão between 1940 and 2025 was 27 October 1964, with 139 mm of rain in 24 hours.
What was the windiest day in Promissão?
The windiest day measured in Promissão between 1940 and 2025 was 7 June 2011, with winds reaching 35.4 km/h.
What is the warmest month in Promissão?
The warmest month in Promissão is February (25.5 °C on average); the coldest is June (19.9 °C).
How much does it rain in Promissão?
Promissão receives on average 1,233 mm of precipitation per year, spread over about 136 rainy days.
Is it sunny in Promissão?
Promissão gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
Are there tropical nights in Promissão?
Yes: Promissão has on average 175 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Promissão?
In Promissão, between 1940 and 2025, the highest apparent temperature reached 44.5 °C on 29 October 2007, and the lowest was -2.1 °C on 18 July 1975.
Compare Promissão with another city
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Nearby cities
The climate around Promissão