Atalaia do Norte in Spring

In spring (September, October and November), Atalaia do Norte sees average daytime highs around 31°C and overnight lows near 23°C, with 602 mm of rain over about 78 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.

Across spring, daytime highs hold fairly steady around 31°C. The sky is clear or mostly clear about 6% of the time across spring, and the air most often feels miserable.

Spring is Atalaia do Norte's 3rd-best season 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: 31°C; warmest season of the year
Avg overnight low: 23°C
Rainfall: 602 mm; 78 wet days
Avg wind: 4 km/h
Travel score: 2.8; 3rd-best season
Months: Sep · Oct · Nov

← Winter Atalaia do Norte year-round climate Summer →

Spring Summer Fall Winter

Temperature in Atalaia do Norte in Spring

Average highAverage lowShaded bands: 10–90% of days

Across spring, daytime highs hold fairly steady around 31°C.

A typical spring day in Atalaia do Norte reaches about 31°C and drops to 23°C overnight. The warmest of the three months is September, the coolest September.

How spring really feels in Atalaia do Norte

Once humidity and wind are folded in, spring brings about 91 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Atalaia do Norte weather by month

How the three spring months (September, October and November) 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 Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Atalaia do Norte gets around 602 mm of rain over 78 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

Most of spring feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.

Wind in Spring

Winds average 4 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

Daylight runs from about 11 h 54 min in early September to 12 h 12 min by late November. The lit band spans sunrise to sunset each day.

Solar energy in Spring

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across spring, about 5.0 kWh/m².

Planning a trip in spring

Is spring a good time to visit Atalaia do Norte?

Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

2.8

Sightseeing

3rd-best month of the year

4.1

Beach & pool

2nd-best month of the year

spring is a weaker month for outdoor sightseeing in Atalaia do Norte.

What to pack for Atalaia do Norte in Spring

From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In spring, Atalaia do Norte sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 78 days see rain.

light clothesrain gearsun protection

UV index in Atalaia do Norte in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 12 (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 Spring

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where spring 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

Location & terrain

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.

3 km

49 m

trees 82%

16 km

71 m

trees 92%

80 km

130 m

trees 96%

treesgrasslandartificial surfaceswater

← Winter Atalaia do Norte year-round climate Summer →

Spring weather nearby: Benjamin Constant 18 km · Tabatinga 32 km · Leticia 33 km · São Paulo de Olivença 183 km · Eirunepé 257 km · Santo Antônio do Içá 287 km · Tonantins 313 km · Ipixuna 342 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.