Açailândia in Spring
In spring (September, October and November), Açailândia sees average daytime highs around 33°C and overnight lows near 23°C, with 156 mm of rain over about 25 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.
Over the season highs ease from about 34°C in early September to 31°C by late November. The sky is clear or mostly clear about 33% of the time across spring, and the air most often feels oppressive.
Spring is Açailândia's 2nd-best season to visit on our travel score. For the whole year in context, see Açailândia's year-round climate.
- Avg daytime high
- 33°C
- warmest season of the year
- Avg overnight low
- 23°C
- Rainfall
- 156 mm
- 25 wet days
- Avg wind
- 8 km/h
- Travel score
- 3.6
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Açailândia in Spring
Over the season highs ease from about 34°C in early September to 31°C by late November.
A typical spring day in Açailândia reaches about 33°C and drops to 23°C overnight. The warmest of the three months is September, the coolest September.
How spring really feels in Açailândia
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.
The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Açailândia 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° / 22° | 255 | 27.4 | 12.3 | 2.9 |
| Feb | 30° / 22° | 260 | 25.2 | 12.2 | 2.9 |
| Mar | 30° / 22° | 300 | 28.8 | 12 | 2.8 |
| Apr | 30° / 22° | 210 | 24.6 | 11.9 | 3.1 |
| May | 31° / 22° | 102 | 15 | 11.8 | 4.0 |
| Jun | 32° / 21° | 15 | 3.3 | 11.7 | 4.8 |
| Jul | 33° / 21° | 9 | 1.7 | 11.7 | 4.5 |
| Aug | 34° / 22° | 4 | 0.7 | 11.8 | 4.0 |
| Sep | 34° / 23° | 14 | 2.9 | 12 | 3.7 |
| Oct | 33° / 23° | 41 | 7.2 | 12.1 | 3.6 |
| Nov | 32° / 23° | 101 | 14.5 | 12.2 | 3.5 |
| Dec | 31° / 22° | 166 | 21.5 | 12.3 | 3.3 |
Cloud cover in Spring
The sky is clear or mostly clear about 33% of the time across spring.
Chance of precipitation in Spring
Açailândia gets around 156 mm of rain over 25 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 8 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 54 min in early September to 12 h 18 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 6.0 kWh/m².
Hazard calendar for Açailândia
None of Açailândia's seasonal hazards peak in spring. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Açailândia's monsoon runs December–April, when most of the year's rain falls.
Is spring a good time to visit Açailândia?
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.
spring is a weaker month for outdoor sightseeing in Açailândia. The water and warmth also suit a beach or pool day.
What to pack for Açailândia in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Açailândia sees daytime highs around 33°C and nights near 23°C. Pack light clothes, rain gear and sun protection. About 25 days see rain.
UV index in Açailândia in Spring
Clear-sky midday UV across spring averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Açailândia peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 at about 10 (extreme).
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) | 13 | 15 | 15 | 14 | 11 | 10 | 10 | 11 | 12 | 12 | 11 | 10 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 15 | Extreme |
| Mar | 15 | Extreme |
| Apr | 14 | Extreme |
| May | 11 | Extreme |
| Jun | 10 | Extreme |
| Jul | 10 | Extreme |
| Aug | 11 | Extreme |
| Sep | 12 | Extreme |
| Oct | 12 | Extreme |
| Nov | 11 | Extreme |
| Dec | 10 | Extreme |
Air quality in Açailândia in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Açailândia is worst in October — around 29 µg/m³ PM2.5 (moderate), about 4.9× the cleanest month (June, 6 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) | 14 | 13 | 13 | 12 | 9 | 6 | 7 | 12 | 23 | 29 | 29 | 20 |
| Level | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 13 | Moderate |
| Mar | 13 | Moderate |
| Apr | 12 | Moderate |
| May | 9 | Good |
| Jun | 6 | Good |
| Jul | 7 | Good |
| Aug | 12 | Moderate |
| Sep | 23 | Moderate |
| Oct | 29 | Moderate |
| Nov | 29 | Moderate |
| Dec | 20 | Moderate |
Where is Açailândia?
Açailândia sits at 4.9°S, 47.5°W, 243 m above sea level, in Brazil. The nearest listed city is Itinga do Maranhão, 55 km away.
Topography around Açailândia
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Açailândia.
Within 3 km, the terrain around Açailândia has only modest variations in elevation — a maximum elevation change of 148 m around an average of 239 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 258 m; within 80 km, significant variations in elevation — a maximum elevation change of 354 m.
The land around Açailândia is covered by grassland (54%) and artificial surfaces (27%) within 3 km, grassland (51%) and trees (43%) within 16 km, and grassland (55%) and trees (41%) 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 Açailândia (-4.9467°, -47.5047°, elevation 243 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.