Itacoatiara climate — normals and trends
Itacoatiara (Brazil) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 27.1 °C and it receives 2,529 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 (28.3 °C on average) and the coldest is January (26.4 °C). Rainfall peaks in March.
Itacoatiara averages 0 frost days, 176 hot days (≥ 30 °C) and 280 rainy days per year.
Itacoatiara has warmed by +1.4 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 37.7 °C (on 22 October 2015) and the coldest 20.1 °C (on 19 July 1975).
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
ItacoatiaraAmazonas
- coords
- -3.14°, -58.44°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.1°C
Average daily high
30.0°C
Average daily low
24.8°C
Annual rainfall
2,529mm
Sunshine / day
9.4h
Mean relative humidity
84%
Average peak wind
10.7km/h
Seasonal range
1.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
176 d/yr
Rainy days (≥ 1 mm)
280 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.0 °C
Average feels-like low
29.8 °C
Average peak gust
27.0 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
16.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.56 · 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
22 October 2015
Coldest day
20.1 °C
19 July 1975
Wettest day
233 mm
14 November 2009
Windiest day
24.3 km/h
21 January 1965
Strongest gust
52.6 km/h
21 January 1965
Hottest feels-like
44.1 °C
14 October 1997
Coldest feels-like
20.1 °C
19 July 1975
Sunniest day
12.0 h
8 January 1940
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 | 29.7 °C | +0.8 °C | 160 mm | -143 mm |
| Feb | 29.0 °C | 0.0 °C | 371 mm | +81 mm |
| Mar | 29.1 °C | -0.1 °C | 354 mm | +12 mm |
| Apr | 30.3 °C | +1.1 °C | 271 mm | -57 mm |
| May | 30.6 °C | +1.2 °C | 190 mm | -71 mm |
| Jun | 30.3 °C | +0.6 °C | 142 mm | -7 mm |
| Jul | 30.8 °C | +0.8 °C | 60 mm | -43 mm |
| Aug | 31.6 °C | +0.6 °C | 53 mm | -41 mm |
| Sep | 32.2 °C | +0.7 °C | 55 mm | -55 mm |
| Oct | 31.9 °C | +0.3 °C | 100 mm | -28 mm |
| Nov | 32.0 °C | +1.2 °C | 188 mm | +16 mm |
| Dec | 30.5 °C | +0.8 °C | 379 mm | +126 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 Itacoatiara?
Itacoatiara has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 27.1 °C and it receives 2,529 mm of precipitation per year.
What is the hottest day ever recorded in Itacoatiara?
The hottest day measured in Itacoatiara between 1940 and 2025 was 22 October 2015, reaching 37.7 °C.
What is the coldest day in Itacoatiara?
The coldest day measured in Itacoatiara between 1940 and 2025 was 19 July 1975, at 20.1 °C.
Does it snow in Itacoatiara?
Almost never: Itacoatiara sees virtually no snow, with about 0 frost days per year.
Has the climate of Itacoatiara warmed?
Yes: Itacoatiara warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Itacoatiara?
The wettest day measured in Itacoatiara between 1940 and 2025 was 14 November 2009, with 233 mm of rain in 24 hours.
What was the windiest day in Itacoatiara?
The windiest day measured in Itacoatiara between 1940 and 2025 was 21 January 1965, with winds reaching 24.3 km/h.
What is the warmest month in Itacoatiara?
The warmest month in Itacoatiara is October (28.3 °C on average); the coldest is January (26.4 °C).
How much does it rain in Itacoatiara?
Itacoatiara receives on average 2,529 mm of precipitation per year, spread over about 280 rainy days.
Is it sunny in Itacoatiara?
Itacoatiara gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.
Are there tropical nights in Itacoatiara?
Yes: Itacoatiara has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Itacoatiara?
In Itacoatiara, between 1940 and 2025, the highest apparent temperature reached 44.1 °C on 14 October 1997, and the lowest was 20.1 °C on 19 July 1975.
Compare Itacoatiara with another city
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Nearby cities
The climate around Itacoatiara