Atalaia do Norte climate — normals and trends
Atalaia do Norte (Brazil) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 25.5 °C and it receives 2,808 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 (26.0 °C on average) and the coldest is July (24.8 °C). Rainfall peaks in March.
Atalaia do Norte averages 0 frost days, 138 hot days (≥ 30 °C) and 321 rainy days per year.
Atalaia do Norte has warmed by +1.2 °C between 1940 and 2025, or +0.14 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.9 °C (on 26 September 2005) and the coldest 15.3 °C (on 22 August 2020).
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
Atalaia do NorteAmazonas
- coords
- -4.37°, -70.19°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.5°C
Average daily high
29.4°C
Average daily low
23.0°C
Annual rainfall
2,808mm
Sunshine / day
8.8h
Mean relative humidity
90%
Average peak wind
7.1km/h
Seasonal range
1.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
138 d/yr
Rainy days (≥ 1 mm)
321 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.9 °C
Average feels-like low
27.6 °C
Average peak gust
23.4 km/h
Tropical nights (≥ 20 °C)
362 d/yr
Solar radiation
16.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.1 °C per decade · r² = 0.64 · 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
35.9 °C
26 September 2005
Coldest day
15.3 °C
22 August 2020
Wettest day
138 mm
13 January 2025
Windiest day
19.0 km/h
29 June 1996
Strongest gust
46.1 km/h
20 August 1965
Hottest feels-like
45.6 °C
26 September 2005
Coldest feels-like
14.1 °C
22 August 2020
Sunniest day
12.2 h
9 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 | 30.1 °C | +0.6 °C | 405 mm | +105 mm |
| Feb | 28.5 °C | -1.0 °C | 432 mm | +142 mm |
| Mar | 29.5 °C | +0.1 °C | 402 mm | +73 mm |
| Apr | 30.0 °C | +0.9 °C | 321 mm | +14 mm |
| May | 29.4 °C | +0.7 °C | 315 mm | +55 mm |
| Jun | 29.3 °C | +0.8 °C | 185 mm | +8 mm |
| Jul | 29.4 °C | +0.8 °C | 91 mm | -45 mm |
| Aug | 30.0 °C | +0.5 °C | 101 mm | -30 mm |
| Sep | 30.4 °C | +0.4 °C | 193 mm | +26 mm |
| Oct | 29.3 °C | -0.8 °C | 255 mm | +55 mm |
| Nov | 29.3 °C | -0.6 °C | 328 mm | +94 mm |
| Dec | 29.2 °C | -0.3 °C | 340 mm | +66 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 Atalaia do Norte?
Atalaia do Norte has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 25.5 °C and it receives 2,808 mm of precipitation per year.
What is the hottest day ever recorded in Atalaia do Norte?
The hottest day measured in Atalaia do Norte between 1940 and 2025 was 26 September 2005, reaching 35.9 °C.
What is the coldest day in Atalaia do Norte?
The coldest day measured in Atalaia do Norte between 1940 and 2025 was 22 August 2020, at 15.3 °C.
Does it snow in Atalaia do Norte?
Almost never: Atalaia do Norte sees virtually no snow, with about 0 frost days per year.
Has the climate of Atalaia do Norte warmed?
Yes: Atalaia do Norte warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Atalaia do Norte?
The wettest day measured in Atalaia do Norte between 1940 and 2025 was 13 January 2025, with 138 mm of rain in 24 hours.
What was the windiest day in Atalaia do Norte?
The windiest day measured in Atalaia do Norte between 1940 and 2025 was 29 June 1996, with winds reaching 19.0 km/h.
What is the warmest month in Atalaia do Norte?
The warmest month in Atalaia do Norte is October (26.0 °C on average); the coldest is July (24.8 °C).
How much does it rain in Atalaia do Norte?
Atalaia do Norte receives on average 2,808 mm of precipitation per year, spread over about 321 rainy days.
Is it sunny in Atalaia do Norte?
Atalaia do Norte gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
Are there tropical nights in Atalaia do Norte?
Yes: Atalaia do Norte has on average 362 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Atalaia do Norte?
In Atalaia do Norte, between 1940 and 2025, the highest apparent temperature reached 45.6 °C on 26 September 2005, and the lowest was 14.1 °C on 22 August 2020.
Compare Atalaia do Norte with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Atalaia do Norte