Açu in Fall
In fall (March, April and May), Açu sees average daytime highs around 33°C and overnight lows near 24°C, with 217 mm of rain over about 35 wet days across the season. It is the coldest season of the year and the wettest season of the year.
Across fall, daytime highs hold fairly steady around 33°C. The sky is clear or mostly clear about 25% of the time across fall, and the air most often feels oppressive.
Fall is Açu's 2nd-best season to visit on our travel score. For the whole year in context, see Açu's year-round climate.
- Avg daytime high
- 33°C
- coldest season of the year
- Avg overnight low
- 24°C
- Rainfall
- 217 mm
- 35 wet days
- Avg wind
- 12 km/h
- Travel score
- 3.2
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in Açu in Fall
Across fall, daytime highs hold fairly steady around 33°C.
A typical fall day in Açu reaches about 33°C and drops to 24°C overnight. The warmest of the three months is March, the coolest May.
How fall really feels in Açu
Once humidity and wind are folded in, fall brings about 92 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Açu weather by month
How the three fall months (March, April and May) 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 | 35° / 24° | 50 | 8.7 | 12.3 | 2.7 |
| Feb | 34° / 24° | 63 | 10.5 | 12.2 | 2.8 |
| Mar | 33° / 24° | 92 | 14.8 | 12 | 2.9 |
| Apr | 33° / 24° | 86 | 13.3 | 11.9 | 3.2 |
| May | 33° / 24° | 40 | 6.7 | 11.7 | 3.6 |
| Jun | 33° / 23° | 24 | 4.3 | 11.7 | 4.1 |
| Jul | 33° / 22° | 15 | 2.4 | 11.7 | 4.2 |
| Aug | 34° / 22° | 3 | 0.4 | 11.8 | 3.7 |
| Sep | 35° / 23° | 1 | 0.1 | 12 | 3.1 |
| Oct | 36° / 23° | 1 | 0.1 | 12.1 | 2.7 |
| Nov | 36° / 24° | 2 | 0.4 | 12.3 | 2.7 |
| Dec | 36° / 24° | 10 | 2.5 | 12.3 | 2.6 |
Cloud cover in Fall
The sky is clear or mostly clear about 25% of the time across fall.
Chance of precipitation in Fall
Açu gets around 217 mm of rain over 35 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 12 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 06 min in early March to 11 h 42 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 5.3 kWh/m².
Is fall a good time to visit Açu?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a weaker month for outdoor sightseeing in Açu.
What to pack for Açu in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Açu sees daytime highs around 33°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 35 days see rain.
UV index in Açu in Fall
Clear-sky midday UV across fall averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Açu peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 at about 10 (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) | 13 | 14 | 15 | 14 | 11 | 10 | 10 | 10 | 12 | 12 | 12 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 14 | Extreme |
| Mar | 15 | Extreme |
| Apr | 14 | Extreme |
| May | 11 | Extreme |
| Jun | 10 | Very high |
| Jul | 10 | Very high |
| Aug | 10 | Extreme |
| Sep | 12 | Extreme |
| Oct | 12 | Extreme |
| Nov | 12 | Extreme |
| Dec | 12 | Extreme |
Where is Açu?
Açu sits at 5.6°S, 36.9°W, 36 m above sea level, in Brazil. The nearest listed city is Jucurutu, 52 km away.
Topography around Açu
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Açu.
Within 3 km, the terrain around Açu has only modest variations in elevation — a maximum elevation change of 78 m around an average of 37 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 132 m; within 80 km, large variations in elevation — a maximum elevation change of 749 m.
The land around Açu is covered by grassland (35%) and artificial surfaces (22%) within 3 km, shrubs (49%) and grassland (35%) within 16 km, and shrubs (66%) and grassland (20%) 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 Açu (-5.5767°, -36.9086°, elevation 36 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.