Porteirinha climate — normals and trends
Porteirinha (Brazil) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 23.8 °C and it receives 653 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 (25.4 °C on average) and the coldest is July (21.1 °C). Rainfall peaks in December.
Porteirinha averages 0 frost days, 154 hot days (≥ 30 °C) and 79 rainy days per year.
Porteirinha has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.4 °C (on 8 October 2020) and the coldest 6.9 °C (on 20 May 2022).
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
PorteirinhaMinas Gerais
- coords
- -15.74°, -43.03°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
23.8°C
Average daily high
29.4°C
Average daily low
18.8°C
Annual rainfall
653mm
Sunshine / day
10.5h
Mean relative humidity
62%
Average peak wind
13.6km/h
Seasonal range
4.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
154 d/yr
Rainy days (≥ 1 mm)
79 d/yr
Annual snowfall
0.0 cm
Average feels-like high
31.1 °C
Average feels-like low
19.3 °C
Average peak gust
33.2 km/h
Tropical nights (≥ 20 °C)
126 d/yr
Solar radiation
19.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.40 · 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
40.4 °C
8 October 2020
Coldest day
6.9 °C
20 May 2022
Wettest day
114 mm
17 January 2004
Windiest day
29.5 km/h
14 July 1985
Strongest gust
65.9 km/h
22 August 2017
Hottest feels-like
42.6 °C
8 October 2020
Coldest feels-like
4.3 °C
20 May 2022
Sunniest day
12.8 h
22 November 1940
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 | 30.0 °C | +0.1 °C | 144 mm | +42 mm |
| Feb | 32.1 °C | +1.8 °C | 8 mm | -68 mm |
| Mar | 33.1 °C | +3.2 °C | 33 mm | -54 mm |
| Apr | 31.6 °C | +2.4 °C | 57 mm | +20 mm |
| May | 29.2 °C | +0.8 °C | 4 mm | -4 mm |
| Jun | 29.4 °C | +1.9 °C | 0 mm | -2 mm |
| Jul | 28.7 °C | +1.5 °C | 0 mm | -1 mm |
| Aug | 30.5 °C | +1.6 °C | 1 mm | -0 mm |
| Sep | 31.9 °C | +0.9 °C | 1 mm | -8 mm |
| Oct | 32.1 °C | +0.8 °C | 38 mm | -20 mm |
| Nov | 31.3 °C | +1.8 °C | 102 mm | -33 mm |
| Dec | 31.0 °C | +1.8 °C | 118 mm | -19 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 Porteirinha?
Porteirinha has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 23.8 °C and it receives 653 mm of precipitation per year.
What is the hottest day ever recorded in Porteirinha?
The hottest day measured in Porteirinha between 1940 and 2025 was 8 October 2020, reaching 40.4 °C.
What is the coldest day in Porteirinha?
The coldest day measured in Porteirinha between 1940 and 2025 was 20 May 2022, at 6.9 °C.
Does it snow in Porteirinha?
Almost never: Porteirinha sees virtually no snow, with about 0 frost days per year.
Has the climate of Porteirinha warmed?
Yes: Porteirinha warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Porteirinha?
The wettest day measured in Porteirinha between 1940 and 2025 was 17 January 2004, with 114 mm of rain in 24 hours.
What was the windiest day in Porteirinha?
The windiest day measured in Porteirinha between 1940 and 2025 was 14 July 1985, with winds reaching 29.5 km/h.
What is the warmest month in Porteirinha?
The warmest month in Porteirinha is October (25.4 °C on average); the coldest is July (21.1 °C).
How much does it rain in Porteirinha?
Porteirinha receives on average 653 mm of precipitation per year, spread over about 79 rainy days.
Is it sunny in Porteirinha?
Porteirinha gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
Are there tropical nights in Porteirinha?
Yes: Porteirinha has on average 126 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Porteirinha?
In Porteirinha, between 1940 and 2025, the highest apparent temperature reached 42.6 °C on 8 October 2020, and the lowest was 4.3 °C on 20 May 2022.
Compare Porteirinha with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Porteirinha