Porteiras climate — normals and trends
Porteiras (Brazil) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 25.6 °C and it receives 627 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 November (28.0 °C on average) and the coldest is July (23.5 °C). Rainfall peaks in March.
Porteiras averages 0 frost days, 217 hot days (≥ 30 °C) and 84 rainy days per year.
Porteiras has warmed by +0.8 °C between 1940 and 2025, or +0.09 °C per decade. This trend is statistically significant.
The hottest day of the period reached 37.7 °C (on 31 October 2023) and the coldest 14.7 °C (on 22 July 1967).
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
PorteirasCeará
- coords
- -7.53°, -39.12°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.6°C
Average daily high
30.8°C
Average daily low
20.9°C
Annual rainfall
627mm
Sunshine / day
10.7h
Mean relative humidity
62%
Average peak wind
16.1km/h
Seasonal range
4.5°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
217 d/yr
Rainy days (≥ 1 mm)
84 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.2 °C
Average feels-like low
22.3 °C
Average peak gust
35.8 km/h
Tropical nights (≥ 20 °C)
261 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 = 0.14 · 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
37.7 °C
31 October 2023
Coldest day
14.7 °C
22 July 1967
Wettest day
134 mm
5 March 1978
Windiest day
34.1 km/h
4 July 2017
Strongest gust
69.5 km/h
4 July 2017
Hottest feels-like
41.0 °C
31 October 2012
Coldest feels-like
13.6 °C
22 July 1967
Sunniest day
12.4 h
21 December 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 | 31.2 °C | -0.3 °C | 146 mm | +53 mm |
| Feb | 32.4 °C | +2.0 °C | 12 mm | -114 mm |
| Mar | 32.0 °C | +2.4 °C | 30 mm | -140 mm |
| Apr | 32.5 °C | +3.1 °C | 22 mm | -89 mm |
| May | 30.8 °C | +1.6 °C | 23 mm | -17 mm |
| Jun | 29.6 °C | +0.9 °C | 15 mm | +1 mm |
| Jul | 29.5 °C | +0.7 °C | 2 mm | -5 mm |
| Aug | 30.5 °C | +0.3 °C | 6 mm | +3 mm |
| Sep | 31.5 °C | -0.6 °C | 2 mm | -2 mm |
| Oct | 33.9 °C | +0.4 °C | 5 mm | -1 mm |
| Nov | 34.7 °C | +1.2 °C | 2 mm | -14 mm |
| Dec | 33.7 °C | +0.8 °C | 11 mm | -26 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 Porteiras?
Porteiras has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 25.6 °C and it receives 627 mm of precipitation per year.
What is the hottest day ever recorded in Porteiras?
The hottest day measured in Porteiras between 1940 and 2025 was 31 October 2023, reaching 37.7 °C.
What is the coldest day in Porteiras?
The coldest day measured in Porteiras between 1940 and 2025 was 22 July 1967, at 14.7 °C.
Does it snow in Porteiras?
Almost never: Porteiras sees virtually no snow, with about 0 frost days per year.
Has the climate of Porteiras warmed?
Yes: Porteiras warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Porteiras?
The wettest day measured in Porteiras between 1940 and 2025 was 5 March 1978, with 134 mm of rain in 24 hours.
What was the windiest day in Porteiras?
The windiest day measured in Porteiras between 1940 and 2025 was 4 July 2017, with winds reaching 34.1 km/h.
What is the warmest month in Porteiras?
The warmest month in Porteiras is November (28.0 °C on average); the coldest is July (23.5 °C).
How much does it rain in Porteiras?
Porteiras receives on average 627 mm of precipitation per year, spread over about 84 rainy days.
Is it sunny in Porteiras?
Porteiras gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
Are there tropical nights in Porteiras?
Yes: Porteiras has on average 261 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Porteiras?
In Porteiras, between 1940 and 2025, the highest apparent temperature reached 41.0 °C on 31 October 2012, and the lowest was 13.6 °C on 22 July 1967.
Compare Porteiras with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Porteiras