São Raimundo Nonato climate — normals and trends
São Raimundo Nonato (Brazil) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 26.1 °C and it receives 684 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 (28.4 °C on average) and the coldest is July (24.9 °C). Rainfall peaks in March.
São Raimundo Nonato averages 0 frost days, 254 hot days (≥ 30 °C) and 84 rainy days per year.
São Raimundo Nonato has warmed by +0.8 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.8 °C (on 9 October 2024) and the coldest 14.7 °C (on 20 June 1988).
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
São Raimundo NonatoPiauí
- coords
- -9.02°, -42.70°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.1°C
Average daily high
31.3°C
Average daily low
21.5°C
Annual rainfall
684mm
Sunshine / day
10.9h
Mean relative humidity
60%
Average peak wind
15.7km/h
Seasonal range
3.5°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
254 d/yr
Rainy days (≥ 1 mm)
84 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.3 °C
Average feels-like low
22.7 °C
Average peak gust
36.4 km/h
Tropical nights (≥ 20 °C)
298 d/yr
Solar radiation
20.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °C
since 1940
+0.1 °C per decade · r² = 0.09 · p = 0.005
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
39.8 °C
9 October 2024
Coldest day
14.7 °C
20 June 1988
Wettest day
125 mm
12 February 2005
Windiest day
32.2 km/h
17 June 1967
Strongest gust
61.9 km/h
26 August 1949
Hottest feels-like
42.7 °C
14 October 2018
Coldest feels-like
14.0 °C
11 August 2022
Sunniest day
12.5 h
6 December 1979
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 | 30.1 °C | -0.4 °C | 167 mm | +39 mm |
| Feb | 31.7 °C | +1.6 °C | 10 mm | -111 mm |
| Mar | 32.5 °C | +2.7 °C | 18 mm | -119 mm |
| Apr | 32.9 °C | +2.7 °C | 18 mm | -55 mm |
| May | 32.6 °C | +1.8 °C | 3 mm | -13 mm |
| Jun | 32.8 °C | +2.2 °C | 2 mm | -1 mm |
| Jul | 32.7 °C | +2.1 °C | 0 mm | -2 mm |
| Aug | 33.5 °C | +1.6 °C | 0 mm | -0 mm |
| Sep | 34.6 °C | +1.0 °C | 0 mm | -3 mm |
| Oct | 35.3 °C | +1.2 °C | 9 mm | -14 mm |
| Nov | 34.7 °C | +2.1 °C | 40 mm | -35 mm |
| Dec | 32.3 °C | +1.0 °C | 17 mm | -85 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 São Raimundo Nonato?
São Raimundo Nonato has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 26.1 °C and it receives 684 mm of precipitation per year.
What is the hottest day ever recorded in São Raimundo Nonato?
The hottest day measured in São Raimundo Nonato between 1940 and 2025 was 9 October 2024, reaching 39.8 °C.
What is the coldest day in São Raimundo Nonato?
The coldest day measured in São Raimundo Nonato between 1940 and 2025 was 20 June 1988, at 14.7 °C.
Does it snow in São Raimundo Nonato?
Almost never: São Raimundo Nonato sees virtually no snow, with about 0 frost days per year.
Has the climate of São Raimundo Nonato warmed?
Yes: São Raimundo Nonato warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in São Raimundo Nonato?
The wettest day measured in São Raimundo Nonato between 1940 and 2025 was 12 February 2005, with 125 mm of rain in 24 hours.
What was the windiest day in São Raimundo Nonato?
The windiest day measured in São Raimundo Nonato between 1940 and 2025 was 17 June 1967, with winds reaching 32.2 km/h.
What is the warmest month in São Raimundo Nonato?
The warmest month in São Raimundo Nonato is October (28.4 °C on average); the coldest is July (24.9 °C).
How much does it rain in São Raimundo Nonato?
São Raimundo Nonato receives on average 684 mm of precipitation per year, spread over about 84 rainy days.
Is it sunny in São Raimundo Nonato?
São Raimundo Nonato gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
Are there tropical nights in São Raimundo Nonato?
Yes: São Raimundo Nonato has on average 298 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in São Raimundo Nonato?
In São Raimundo Nonato, between 1940 and 2025, the highest apparent temperature reached 42.7 °C on 14 October 2018, and the lowest was 14.0 °C on 11 August 2022.
Compare São Raimundo Nonato with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around São Raimundo Nonato