Weather forecast for 10 daysCastanhal, Brazil

Weather forecast for the weekend

Saturday 24. Oct 2026

  • 34°C
  • 24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 19km/hNE 50°
  • Humidity: 65%
  • UV index: 11
  • Sunrise: 05:51 -03
  • Sunset: 18:00 -03
  • ▼
On Saturday, 24th of October, a partly cloudy sky is also anticipated.
Temperatures will oscillate between a hot 34°C at their highest and a temperate 24°C at their lowest.
The maximum heat index, which factors the actual air temperature with the relative humidity, is computed to be a torridly hot 44°C. Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Forecasts show that tomorrow the temperature will align with October's standard maximum of 33.5°C.
Sunrise will be at 05:51 and sunset at 18:00; tomorrow's daylight will last for 12h and 9min.

Sunday 25. Oct 2026

  • 35°C
  • 23°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 20km/hNE 45°
  • Humidity: 61%
  • UV index: 11
  • Sunrise: 05:51 -03
  • Sunset: 18:00 -03
  • ▼
On Sunday, 25th of October, a partly cloudy outlook will keep the sky interesting throughout the day.
The maximum predicted temperature is a steamy 35°C, while the minimum temperature will be a temperate 23°C.
The expected high temperature will align with October's average of 33.5°C.
Sunrise will be at 05:51 and sunset at 18:00; the daylight will last for 12h and 9min.

10-day overview

Daily temperatures

Maximum temperature: 36°C.
Coldest period: today - tomorrow 34°C.

Chance of precipitation

Highest chance: tomorrow - Sunday 24%.

Long-term weather forecast

  • Friday
  • 23. Oct 2026
  • 34°C
  • 24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0mm
  • Wind: 18km/hNE 55°
  • Humidity: 58%
  • UV index: 11
  • Sunrise: 05:51 -03
  • Sunset: 18:00 -03
  • ▼
  • Saturday
  • 24. Oct 2026
  • 34°C
  • 24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 19km/hNE 50°
  • Humidity: 65%
  • UV index: 11
  • Sunrise: 05:51 -03
  • Sunset: 18:00 -03
  • ▼
  • Sunday
  • 25. Oct 2026
  • 35°C
  • 23°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 20km/hNE 45°
  • Humidity: 61%
  • UV index: 11
  • Sunrise: 05:51 -03
  • Sunset: 18:00 -03
  • ▼
  • Monday
  • 26. Oct 2026
  • 36°C
  • 24°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 10%
  • Precipitation: 0mm
  • Wind: 18km/hNE 39°
  • Humidity: 58%
  • UV index: 11
  • Sunrise: 05:50 -03
  • Sunset: 18:00 -03
  • ▼
  • Tuesday
  • 27. Oct 2026
  • 36°C
  • 24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 11%
  • Precipitation: 0mm
  • Wind: 16km/hNE 41°
  • Humidity: 58%
  • UV index: 11
  • Sunrise: 05:50 -03
  • Sunset: 18:00 -03
  • ▼
  • Wednesday
  • 28. Oct 2026
  • 36°C
  • 24°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 9%
  • Precipitation: 0mm
  • Wind: 16km/hNE 52°
  • Humidity: 59%
  • UV index: 11
  • Sunrise: 05:50 -03
  • Sunset: 18:00 -03
  • ▼
  • Thursday
  • 29. Oct 2026
  • 35°C
  • 24°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 14%
  • Precipitation: 0mm
  • Wind: 17km/hENE 58°
  • Humidity: 61%
  • UV index: 11
  • Sunrise: 05:50 -03
  • Sunset: 18:00 -03
  • ▼
  • Friday
  • 30. Oct 2026
  • 35°C
  • 24°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0mm
  • Wind: 17km/hNE 52°
  • Humidity: 59%
  • UV index: 11
  • Sunrise: 05:50 -03
  • Sunset: 18:00 -03
  • ▼
  • Saturday
  • 31. Oct 2026
  • 36°C
  • 24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0mm
  • Wind: 16km/hNE 50°
  • Humidity: 57%
  • UV index: 11
  • Sunrise: 05:50 -03
  • Sunset: 18:00 -03
  • ▼
  • Sunday
  • 1. Nov 2026
  • 35°C
  • 24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 12%
  • Precipitation: 0mm
  • Wind: 17km/hNE 50°
  • Humidity: 58%
  • UV index: 11
  • Sunrise: 05:50 -03
  • Sunset: 18:00 -03
  • ▼
In the days ahead, a combination of overcast and sun-filled weather is predicted.
Rainfall is not anticipated in Castanhal in the upcoming period.
Temperature differences will be unnoticeable over the next several days. The maximum temperature will vary between 34°C and 36°C, while the overnight low will be also nearly unchanged, as the minimum temperature is expected to range between 23°C and 24°C.
The hottest days in Castanhal will be Monday through Wednesday and next Saturday, with a maximum of 36°C; with a maximum temperature of 34°C, Friday and Saturday will be the coldest days in Castanhal.
Including the humidity's impact, the maximum feel-like temperature may increase vastly and vary between an extremely hot 41°C and a life-threatening 48°C.
The warmest months are October and November, with an average high-temperature of 33.5°C.
Updated: Oct 23, 2026 @ 11:26:49 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

In Castanhal, a combination of dull and sun-filled weather is predicted for the next ten days.

The maximum temperature will range between 34°C and 36°C, while the minimum temperature will be between 23°C and 24°C.
Including the humidity's impact, the maximum feel-like temperature will range between 41°C and 48°C.

With a maximum temperature of 36°C, Monday through Wednesday and next Saturday will be the hottest days. With a maximum temperature of 34°C, Friday and Saturday will be the coldest days.

Tomorrow, intermittent cloud cover is expected, allowing for some sunshine.

Tomorrow, the maximum temperature in Castanhal will be 34°C, while the minimum temperature will be 24°C. The maximum heat index, which factors the actual air temperature with the relative humidity, is assessed at 44°C.
The maximum temperature will be in line with the average highest temperature of 33.5°C in October. The lowest temperature will be also in line with the average low of 22.4°C.

On Saturday, in Castanhal, sunrise will be at 05:51 and sunset at 18:00 (-03).

Tomorrow, the daylight will last for 12h and 9min.

On Sunday, in Castanhal, high-altitude clouds may scatter across the sky, but the sun will still shine.

On Sunday, the maximum temperature will be 35°C, while the minimum temperature will be 23°C.