Weather forecast for 10 daysAçu, Brazil

Weather forecast for the weekend

Sunday 25. Oct 2026

  • 36°C
  • 23°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 29km/hNE 51°
  • Humidity: 54%
  • UV index: 11
  • Sunrise: 05:03 -03
  • Sunset: 17:20 -03
  • ▼
Today, in Açu, a pleasant mix of sun and clouds will define the day.
The temperature will fluctuate from a high of a sizzling 36°C to a low of a temperate 23°C.
The maximum heat index, which combines relative humidity and air temperature, is evaluated at a blazing hot 45°C. Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Today's top temperature is set to align with the common October high of 35.7°C.
Sunrise was at 05:03 and sunset will be at 17:20; the daylight will last for 12h and 17min.

10-day overview

Daily temperatures

Warmest day: Wednesday 39°C.
Coldest period: today - tomorrow 36°C.

Chance of precipitation

Highest chance: Wednesday 15%.

Long-term weather forecast

  • Sunday
  • 25. Oct 2026
  • 36°C
  • 23°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 29km/hNE 51°
  • Humidity: 54%
  • UV index: 11
  • Sunrise: 05:03 -03
  • Sunset: 17:20 -03
  • ▼
  • Monday
  • 26. Oct 2026
  • 36°C
  • 24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0mm
  • Wind: 26km/hNE 35°
  • Humidity: 53%
  • UV index: 11
  • Sunrise: 05:03 -03
  • Sunset: 17:20 -03
  • ▼
  • Tuesday
  • 27. Oct 2026
  • 37°C
  • 23°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 12%
  • Precipitation: 0mm
  • Wind: 26km/hNE 46°
  • Humidity: 51%
  • UV index: 11
  • Sunrise: 05:02 -03
  • Sunset: 17:20 -03
  • ▼
  • Wednesday
  • 28. Oct 2026
  • 39°C
  • 24°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0mm
  • Wind: 18km/hE 92°
  • Humidity: 45%
  • UV index: 11
  • Sunrise: 05:02 -03
  • Sunset: 17:20 -03
  • ▼
  • Thursday
  • 29. Oct 2026
  • 38°C
  • 24°C
Sunny
Sunny
  • Precip. probability: 10%
  • Precipitation: 0mm
  • Wind: 22km/hE 81°
  • Humidity: 44%
  • UV index: 11
  • Sunrise: 05:02 -03
  • Sunset: 17:20 -03
  • ▼
  • Friday
  • 30. Oct 2026
  • 37°C
  • 24°C
Sunny
Sunny
  • Precip. probability: 9%
  • Precipitation: 0mm
  • Wind: 23km/hENE 71°
  • Humidity: 47%
  • UV index: 11
  • Sunrise: 05:02 -03
  • Sunset: 17:20 -03
  • ▼
  • Saturday
  • 31. Oct 2026
  • 38°C
  • 24°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0mm
  • Wind: 23km/hENE 67°
  • Humidity: 47%
  • UV index: 11
  • Sunrise: 05:02 -03
  • Sunset: 17:20 -03
  • ▼
  • Sunday
  • 1. Nov 2026
  • 38°C
  • 24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 25km/hENE 66°
  • Humidity: 47%
  • UV index: 11
  • Sunrise: 05:01 -03
  • Sunset: 17:20 -03
  • ▼
  • Monday
  • 2. Nov 2026
  • 38°C
  • 24°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0mm
  • Wind: 24km/hENE 73°
  • Humidity: 45%
  • UV index: 11
  • Sunrise: 05:01 -03
  • Sunset: 17:20 -03
  • ▼
  • Tuesday
  • 3. Nov 2026
  • 38°C
  • 24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0mm
  • Wind: 23km/hENE 76°
  • Humidity: 44%
  • UV index: 11
  • Sunrise: 05:01 -03
  • Sunset: 17:20 -03
  • ▼
During the upcoming ten-day period, a combination of cloud-filled and mostly clear weather is anticipated.
Rainfall is not expected in Açu in the upcoming days.
The temperature shift across days will be subtle during the next few days. The maximum temperature will vary between 36°C and 39°C, while the nighttime low will be also mostly stable, as night temperatures will lie between 23°C and 24°C.
Expect the hottest day on Wednesday, with temperatures peaking at 39°C; the coldest days will be Sunday and Monday, with a maximum of 36°C.
Including the humidity's impact, the maximum feel-like temperature may increase considerably and range between an extremely hot 44°C and a life-threatening 49°C.
The climate reaches its peak warmth in October, with highs averaging 35.7°C and lows dropping to 22.7°C.
Updated: Oct 25, 2026 @ 09:27:57 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, in Açu, intermittent cloud cover is expected, allowing for some sunshine.

Today, the highest temperature will be 36°C, while the lowest temperature will be 23°C. The maximum heat index, which modifies the air temperature to account for humidity, is computed to be 45°C.
Today, the highest temperature will be in line with the average maximum temperature in October. The lowest temperature today will be also in line with the average low temperature.

On Sunday, in Açu, sunrise was at 05:03 and sunset will be at 17:20 (-03).

In Açu, Brazil, the length of the day today will be 12h and 17min.