Trairão climate — normals and trends
Trairão (Brazil) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.1 °C and it receives 2,141 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 September (27.5 °C on average) and the coldest is January (25.3 °C). Rainfall peaks in March.
Trairão averages 0 frost days, 220 hot days (≥ 30 °C) and 256 rainy days per year.
Trairão has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.5 °C (on 16 October 1963) and the coldest 18.2 °C (on 7 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
TrairãoPará
- coords
- -4.57°, -55.94°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.1°C
Average daily high
30.7°C
Average daily low
22.9°C
Annual rainfall
2,141mm
Sunshine / day
9.5h
Mean relative humidity
85%
Average peak wind
8.1km/h
Seasonal range
2.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
220 d/yr
Rainy days (≥ 1 mm)
256 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.6 °C
Average feels-like low
27.3 °C
Average peak gust
28.2 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
17.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.43 · 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
40.5 °C
16 October 1963
Coldest day
18.2 °C
7 July 1974
Wettest day
148 mm
9 April 2020
Windiest day
19.8 km/h
16 January 1965
Strongest gust
54.0 km/h
18 December 2015
Hottest feels-like
44.6 °C
9 October 2023
Coldest feels-like
19.7 °C
7 July 1974
Sunniest day
12.2 h
30 November 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 | 30.1 °C | +0.8 °C | 361 mm | +73 mm |
| Feb | 30.1 °C | +0.8 °C | 371 mm | +85 mm |
| Mar | 29.5 °C | +0.1 °C | 415 mm | +106 mm |
| Apr | 31.3 °C | +2.0 °C | 203 mm | -89 mm |
| May | 31.3 °C | +1.7 °C | 100 mm | -91 mm |
| Jun | 31.4 °C | +1.1 °C | 65 mm | -16 mm |
| Jul | 32.6 °C | +1.3 °C | 9 mm | -43 mm |
| Aug | 33.5 °C | +0.8 °C | 24 mm | -30 mm |
| Sep | 34.6 °C | +1.6 °C | 46 mm | -37 mm |
| Oct | 32.7 °C | -0.1 °C | 132 mm | +13 mm |
| Nov | 32.7 °C | +1.1 °C | 138 mm | -24 mm |
| Dec | 30.7 °C | +0.4 °C | 263 mm | +37 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 Trairão?
Trairão has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.1 °C and it receives 2,141 mm of precipitation per year.
What is the hottest day ever recorded in Trairão?
The hottest day measured in Trairão between 1940 and 2025 was 16 October 1963, reaching 40.5 °C.
What is the coldest day in Trairão?
The coldest day measured in Trairão between 1940 and 2025 was 7 July 1974, at 18.2 °C.
Does it snow in Trairão?
Almost never: Trairão sees virtually no snow, with about 0 frost days per year.
Has the climate of Trairão warmed?
Yes: Trairão warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Trairão?
The wettest day measured in Trairão between 1940 and 2025 was 9 April 2020, with 148 mm of rain in 24 hours.
What was the windiest day in Trairão?
The windiest day measured in Trairão between 1940 and 2025 was 16 January 1965, with winds reaching 19.8 km/h.
What is the warmest month in Trairão?
The warmest month in Trairão is September (27.5 °C on average); the coldest is January (25.3 °C).
How much does it rain in Trairão?
Trairão receives on average 2,141 mm of precipitation per year, spread over about 256 rainy days.
Is it sunny in Trairão?
Trairão gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.
Are there tropical nights in Trairão?
Yes: Trairão has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Trairão?
In Trairão, between 1940 and 2025, the highest apparent temperature reached 44.6 °C on 9 October 2023, and the lowest was 19.7 °C on 7 July 1974.
Compare Trairão with another city
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Nearby cities
The climate around Trairão