Weather forecast for tomorrowCastanhal, Brazil

Weather forecast for tomorrow

Sunday 1. Nov 2026

  • 35°C
  • 25°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 13%
  • Precipitation: 0mm
  • Wind: 18km/hNE 50°
  • Humidity: 59%
  • UV index: 11
  • Sunrise: 05:50 -03
  • Sunset: 18:00 -03
  • ▼
Tomorrow, on Sunday, high-altitude clouds may scatter across the sky, but the sun will still shine.
The highest temperature will be a sweltering 35°C, while the lowest expected temperature is a warm 25°C.
The maximum heat index, which reflects the perceived temperature due to humidity levels, is assessed at a dangerously hot 45°C. Take into consideration that the heat index values are calculated for shade and light wind conditions. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
The forecasted maximum temperature will closely reflect October's average high of 33.5°C.
Sunrise will be at 05:50 and sunset at 18:00; tomorrow's daylight will last for 12h and 10min.

Hourly overview

Hourly temperatures

Warmest hour: 15h 41°C.
Coldest period: 3h - 6h 27°C.

Chance of precipitation

Highest chance: 12h 13%.

Hourly weather forecast

  • 0h
  • 25°C
  • Feels like:
    28°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0mm
  • Wind: 10km/hNE 42°
  • Humidity: 86%
  • Pressure: 1011mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 2h
  • 25°C
  • Feels like:
    27°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 6km/hNE 43°
  • Humidity: 91%
  • Pressure: 1009mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 4h
  • 24°C
  • Feels like:
    27°C
Clear
Clear
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 5km/hNE 43°
  • Humidity: 92%
  • Pressure: 1009mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Sunrise: 05:50
  • 6h
  • 24°C
  • Feels like:
    27°C
Sunny
Sunny
  • Precip. probability: 9%
  • Precipitation: 0mm
  • Wind: 5km/hENE 56°
  • Humidity: 92%
  • Pressure: 1010mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 8h
  • 29°C
  • Feels like:
    33°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0mm
  • Wind: 15km/hENE 58°
  • Humidity: 74%
  • Pressure: 1012mbar
  • Visibility: 16km
  • UV index: 3
  • ▼
  • 10h
  • 32°C
  • Feels like:
    38°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0mm
  • Wind: 18km/hENE 64°
  • Humidity: 59%
  • Pressure: 1012mbar
  • Visibility: 16km
  • UV index: 11
  • ▼
  • 12h
  • 34°C
  • Feels like:
    40°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 13%
  • Precipitation: 0mm
  • Wind: 14km/hENE 60°
  • Humidity: 53%
  • Pressure: 1010mbar
  • Visibility: 16km
  • UV index: 11
  • ▼
  • 14h
  • 35°C
  • Feels like:
    41°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 16km/hNE 39°
  • Humidity: 51%
  • Pressure: 1008mbar
  • Visibility: 16km
  • UV index: 11
  • ▼
  • 16h
  • 34°C
  • Feels like:
    40°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0mm
  • Wind: 15km/hNE 35°
  • Humidity: 54%
  • Pressure: 1007mbar
  • Visibility: 16km
  • UV index: 3
  • ▼
  • 18h
  • 31°C
  • Feels like:
    36°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0mm
  • Wind: 14km/hNE 37°
  • Humidity: 60%
  • Pressure: 1008mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Sunset: 18:00
  • 20h
  • 29°C
  • Feels like:
    33°C
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 16km/hNE 45°
  • Humidity: 68%
  • Pressure: 1010mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 22h
  • 27°C
  • Feels like:
    30°C
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0mm
  • Wind: 15km/hNE 51°
  • Humidity: 76%
  • Pressure: 1010mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Tomorrow, on Sunday, primarily cloudy and occasionally bright weather is predicted.
The temperature will vary between a minimum of 24°C and a maximum of 35°C. The feels-like temperature will be between the lowest temperature of 27°C and the highest temperature of 41°C. The hottest part of the day will be from 13h to 15h.
The highest temperature tomorrow will be comparable to October's typical maximum. Tomorrow, the nighttime low will be also moderately higher than October's typical minimum of 22.4°C.
October and November, with an average high-temperature of 33.5°C, are the warmest months in Castanhal.
Updated: Oct 31, 2026 @ 17:03:50 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, in Castanhal, clouds and sunshine will alternate throughout the day.

Tomorrow, the highest temperature will be 35°C, while the lowest temperature will be 25°C. The maximum heat index, which indicates how humid air affects the felt temperature, is calculated to be 45°C.
Tomorrow, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature tomorrow will be relatively higher than the average low temperature.

On Sunday, in Castanhal, sunrise will be at 05:50 and sunset at 18:00 (-03).

Tomorrow, the daylight will last for 12h and 10min.