Valença do Piauí climate — normals and trends
Valença do Piauí (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.3 °C and it receives 962 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 October (30.1 °C on average) and the coldest is March (25.3 °C). Rainfall peaks in March.
Valença do Piauí averages 0 frost days, 288 hot days (≥ 30 °C) and 112 rainy days per year.
Valença do Piauí has warmed by +1.1 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.2 °C (on 29 October 2016) and the coldest 17.5 °C (on 4 July 1974).
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
Valença do PiauíPiauí
- coords
- -6.41°, -41.75°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.3°C
Average daily high
32.3°C
Average daily low
22.9°C
Annual rainfall
962mm
Sunshine / day
10.9h
Mean relative humidity
59%
Average peak wind
14.1km/h
Seasonal range
4.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
288 d/yr
Rainy days (≥ 1 mm)
112 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.9 °C
Average feels-like low
24.3 °C
Average peak gust
34.2 km/h
Tropical nights (≥ 20 °C)
360 d/yr
Solar radiation
20.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.18 · 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
40.2 °C
29 October 2016
Coldest day
17.5 °C
4 July 1974
Wettest day
194 mm
21 December 1989
Windiest day
31.6 km/h
4 July 2017
Strongest gust
66.2 km/h
4 July 2017
Hottest feels-like
43.9 °C
31 October 2012
Coldest feels-like
16.0 °C
2 August 1988
Sunniest day
12.3 h
26 November 2025
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 | 31.0 °C | 0.0 °C | 201 mm | +24 mm |
| Feb | 31.8 °C | +1.6 °C | 36 mm | -161 mm |
| Mar | 31.5 °C | +1.7 °C | 54 mm | -190 mm |
| Apr | 33.0 °C | +2.9 °C | 24 mm | -141 mm |
| May | 33.2 °C | +2.2 °C | 2 mm | -40 mm |
| Jun | 33.1 °C | +1.4 °C | 0 mm | -7 mm |
| Jul | 33.8 °C | +1.6 °C | 0 mm | -4 mm |
| Aug | 34.8 °C | +1.2 °C | 1 mm | -0 mm |
| Sep | 35.8 °C | +0.7 °C | 0 mm | -3 mm |
| Oct | 36.4 °C | +0.8 °C | 3 mm | -9 mm |
| Nov | 36.1 °C | +1.5 °C | 7 mm | -28 mm |
| Dec | 33.3 °C | +0.2 °C | 31 mm | -46 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 Valença do Piauí?
Valença do Piauí has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.3 °C and it receives 962 mm of precipitation per year.
What is the hottest day ever recorded in Valença do Piauí?
The hottest day measured in Valença do Piauí between 1940 and 2025 was 29 October 2016, reaching 40.2 °C.
What is the coldest day in Valença do Piauí?
The coldest day measured in Valença do Piauí between 1940 and 2025 was 4 July 1974, at 17.5 °C.
Does it snow in Valença do Piauí?
Almost never: Valença do Piauí sees virtually no snow, with about 0 frost days per year.
Has the climate of Valença do Piauí warmed?
Yes: Valença do Piauí warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Valença do Piauí?
The wettest day measured in Valença do Piauí between 1940 and 2025 was 21 December 1989, with 194 mm of rain in 24 hours.
What was the windiest day in Valença do Piauí?
The windiest day measured in Valença do Piauí between 1940 and 2025 was 4 July 2017, with winds reaching 31.6 km/h.
What is the warmest month in Valença do Piauí?
The warmest month in Valença do Piauí is October (30.1 °C on average); the coldest is March (25.3 °C).
How much does it rain in Valença do Piauí?
Valença do Piauí receives on average 962 mm of precipitation per year, spread over about 112 rainy days.
Is it sunny in Valença do Piauí?
Valença do Piauí gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
Are there tropical nights in Valença do Piauí?
Yes: Valença do Piauí has on average 360 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Valença do Piauí?
In Valença do Piauí, between 1940 and 2025, the highest apparent temperature reached 43.9 °C on 31 October 2012, and the lowest was 16.0 °C on 2 August 1988.
Compare Valença do Piauí with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Valença do Piauí