Atalaia do Norte in Summer
In summer (December, January and February), Atalaia do Norte sees average daytime highs around 30°C and overnight lows near 24°C, with 905 mm of rain over about 84 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 30°C. The sky is clear or mostly clear about 0% of the time across summer, and the air most often feels miserable.
Summer is Atalaia do Norte's weakest season of the year to visit on our travel score. Atalaia do Norte has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Atalaia do Norte's year-round climate.
- Avg daytime high
- 30°C
- 2nd-warmest season
- Avg overnight low
- 24°C
- Rainfall
- 905 mm
- 84 wet days
- Avg wind
- 4 km/h
- Travel score
- 2.7
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Atalaia do Norte in Summer
Across summer, daytime highs hold fairly steady around 30°C.
A typical summer day in Atalaia do Norte reaches about 30°C and drops to 24°C overnight. The warmest of the three months is December, the coolest December.
How summer really feels in Atalaia do Norte
Once humidity and wind are folded in, summer brings about 90 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Atalaia do Norte weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 30° / 24° | 312 | 28.8 | 12.2 | 2.7 |
| Feb | 30° / 24° | 301 | 26.3 | 12.1 | 2.7 |
| Mar | 30° / 24° | 344 | 29.3 | 12 | 2.7 |
| Apr | 30° / 23° | 291 | 27.7 | 11.9 | 2.8 |
| May | 29° / 23° | 256 | 27.2 | 11.8 | 3.1 |
| Jun | 29° / 23° | 185 | 24.6 | 11.8 | 3.4 |
| Jul | 29° / 22° | 146 | 23.1 | 11.8 | 3.7 |
| Aug | 30° / 23° | 135 | 22.4 | 11.9 | 3.5 |
| Sep | 31° / 23° | 163 | 24.1 | 12 | 3.0 |
| Oct | 31° / 23° | 210 | 26.5 | 12.1 | 2.8 |
| Nov | 31° / 24° | 230 | 27 | 12.2 | 2.6 |
| Dec | 30° / 24° | 292 | 29.2 | 12.2 | 2.7 |
Cloud cover in Summer
The sky is clear or mostly clear about 0% of the time across summer.
Chance of precipitation in Summer
Atalaia do Norte gets around 905 mm of rain over 84 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 4 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 12 min in early December to 12 h 06 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 4.5 kWh/m².
Is summer a good time to visit Atalaia do Norte?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Atalaia do Norte.
What to pack for Atalaia do Norte in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Atalaia do Norte sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 84 days see rain.
UV index in Atalaia do Norte in Summer
Clear-sky midday UV across summer averages around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Atalaia do Norte peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 16 at about 9 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 16 | 15 | 13 | 12 | 10 | 10 | 9 | 10 | 12 | 13 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 16 | Extreme |
| Mar | 15 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 10 | Extreme |
| Jul | 10 | Very high |
| Aug | 9 | Very high |
| Sep | 10 | Very high |
| Oct | 12 | Extreme |
| Nov | 13 | Extreme |
| Dec | 12 | Extreme |
Air quality in Atalaia do Norte in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Atalaia do Norte is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (June, 8 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 13 | 14 | 13 | 11 | 9 | 8 | 10 | 16 | 17 | 11 | 11 | 11 |
| Level | Moderate | Moderate | Moderate | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 14 | Moderate |
| Mar | 13 | Moderate |
| Apr | 11 | Good |
| May | 9 | Good |
| Jun | 8 | Good |
| Jul | 10 | Good |
| Aug | 16 | Moderate |
| Sep | 17 | Moderate |
| Oct | 11 | Good |
| Nov | 11 | Good |
| Dec | 11 | Good |
Where is Atalaia do Norte?
Atalaia do Norte sits at 4.4°S, 70.2°W, 84 m above sea level, in Brazil. The nearest listed city is Benjamin Constant, 18 km away.
Topography around Atalaia do Norte
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Atalaia do Norte.
Within 3 km, the terrain around Atalaia do Norte has only modest variations in elevation — a maximum elevation change of 49 m around an average of 81 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 71 m; within 80 km, only modest variations in elevation — a maximum elevation change of 130 m.
The land around Atalaia do Norte is covered by trees (82%) within 3 km, trees (92%) within 16 km, and trees (96%) within 80 km.
Brazil travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / N
- 127 / 220 V · 60 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $10,713
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 89%
- of population, 2024
- Homicide rate
- 19.3
- per 100k, 2023
- Road deaths
- 16
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 482
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Atalaia do Norte (-4.3665°, -70.1919°, elevation 84 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.