Weather forecast for 10 daysIaçu, Brazil

Weather forecast for the weekend

Saturday 31. Oct 2026

  • 36°C
  • 23°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 10km/hENE 78°
  • Humidity: 42%
  • UV index: 11
  • Sunrise: 05:07 -03
  • Sunset: 17:41 -03
  • ▼
Today, predominantly sunny weather will make for pleasant outdoor conditions.
The temperature is expected to vary between a maximum of a steamy 36°C and a minimum of a warm 23°C.
The maximum heat index, which indicates how humid air affects the felt temperature, is appraised at an extremely hot 40°C. Note that heat index values are valued for light wind and location in the shade. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
Today, the anticipated high temperature will be relatively higher than the average October peak of 31.2°C.
Sunrise was at 05:07 and sunset will be at 17:41; the daylight will last for 12h and 34min.

Sunday 1. Nov 2026

  • 37°C
  • 23°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0mm
  • Wind: 20km/hE 90°
  • Humidity: 50%
  • UV index: 11
  • Sunrise: 05:07 -03
  • Sunset: 17:41 -03
  • ▼
Tomorrow, on Sunday, 1st of November, thin clouds will pass through at times, but overall, it will remain bright.
The temperature will vary between a maximum of a sweltering 37°C and a minimum of a warm 23°C.
The maximum heat index, which reflects the perceived temperature due to humidity levels, is estimated at a blazing hot 46°C. Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Climatological data for October shows the high temperature will be notably higher than the average of 31.2°C.
Sunrise will be at 05:07 and sunset at 17:41; tomorrow's daylight will last for 12h and 34min.

10-day overview

Daily temperatures

Warmest period: Thursday - Saturday 39°C.
Minimum temperature: 36°C.

Chance of precipitation

Highest chance: 19%.

Long-term weather forecast

  • Saturday
  • 31. Oct 2026
  • 36°C
  • 23°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 10km/hENE 78°
  • Humidity: 42%
  • UV index: 11
  • Sunrise: 05:07 -03
  • Sunset: 17:41 -03
  • ▼
  • Sunday
  • 1. Nov 2026
  • 37°C
  • 23°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0mm
  • Wind: 20km/hE 90°
  • Humidity: 50%
  • UV index: 11
  • Sunrise: 05:07 -03
  • Sunset: 17:41 -03
  • ▼
  • Monday
  • 2. Nov 2026
  • 36°C
  • 23°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0mm
  • Wind: 20km/hE 88°
  • Humidity: 51%
  • UV index: 11
  • Sunrise: 05:06 -03
  • Sunset: 17:41 -03
  • ▼
  • Tuesday
  • 3. Nov 2026
  • 37°C
  • 22°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0mm
  • Wind: 17km/hENE 78°
  • Humidity: 49%
  • UV index: 11
  • Sunrise: 05:06 -03
  • Sunset: 17:42 -03
  • ▼
  • Wednesday
  • 4. Nov 2026
  • 37°C
  • 22°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0mm
  • Wind: 12km/hENE 69°
  • Humidity: 47%
  • UV index: 11
  • Sunrise: 05:06 -03
  • Sunset: 17:42 -03
  • ▼
  • Thursday
  • 5. Nov 2026
  • 39°C
  • 22°C
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Precip. probability: 4%
  • Precipitation: 0mm
  • Wind: 11km/hENE 60°
  • Humidity: 47%
  • UV index: 11
  • Sunrise: 05:06 -03
  • Sunset: 17:42 -03
  • ▼
  • Friday
  • 6. Nov 2026
  • 39°C
  • 23°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0mm
  • Wind: 9km/hNE 55°
  • Humidity: 45%
  • UV index: 11
  • Sunrise: 05:05 -03
  • Sunset: 17:43 -03
  • ▼
  • Saturday
  • 7. Nov 2026
  • 39°C
  • 23°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 13km/hENE 78°
  • Humidity: 46%
  • UV index: 11
  • Sunrise: 05:05 -03
  • Sunset: 17:43 -03
  • ▼
  • Sunday
  • 8. Nov 2026
  • 37°C
  • 23°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 11%
  • Precipitation: 0mm
  • Wind: 12km/hE 91°
  • Humidity: 49%
  • UV index: 11
  • Sunrise: 05:05 -03
  • Sunset: 17:43 -03
  • ▼
  • Monday
  • 9. Nov 2026
  • 37°C
  • 23°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 1mm
  • Wind: 14km/hE 85°
  • Humidity: 50%
  • UV index: 11
  • Sunrise: 05:05 -03
  • Sunset: 17:44 -03
  • ▼
During the upcoming ten-day period, primarily cloudy and occasionally sunny weather is predicted.
With a 19% probability, rainfall is anticipated only on next Monday. Forecasted precipitation will be minimal at 1mm.
Temperature differences will be unnoticeable in the forecast period ahead. The maximum temperature will vary between 36°C and 39°C, while the overnight low will be also nearly unchanged, as the lowest temperatures will remain in the range of 22°C to 23°C.
Thursday through next Saturday, with the highest temperature of 39°C, will be the hottest days; the coldest days will be Saturday and Monday, with a maximum of 36°C.
Including the humidity's impact, the maximum feel-like temperature may increase vastly and range between a torridly hot 40°C and a blazing hot 50°C.
Updated: Oct 31, 2026 @ 15:03:17 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, sunny intervals will be long-lasting, with few disruptions.

Today, the highest temperature will be 36°C, while the lowest temperature will be 23°C. The maximum heat index, which indicates how humid air affects the felt temperature, is evaluated at 40°C.
The maximum temperature today will be moderately higher than the average highest temperature in October. Today, the lowest temperature will be also slightly warmer than the average low temperature.

On Saturday, in Iaçu, sunrise was at 05:07 and sunset will be at 17:41 (-03).

Today, the daylight will last for 12h and 34min.

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

Tomorrow, the maximum temperature will be 37°C, while the minimum temperature will be 23°C. The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is evaluated at 46°C.
Tomorrow, the highest temperature will be notably higher than the average maximum of 31.2°C in October. The lowest temperature tomorrow will be moderately higher than the average low temperature.

On Sunday, in Iaçu, sunrise will be at 05:07 and sunset at 17:41 (-03).

Tomorrow, the daylight will last for 12h and 34min.