Weather forecast for tomorrowCastanhal, Brazil

Weather forecast for tomorrow

Friday 30. Oct 2026

  • 36°C
  • 23°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 14%
  • Precipitation: 0mm
  • Wind: 19km/hNE 55°
  • Humidity: 58%
  • UV index: 11
  • Sunrise: 05:50 -03
  • Sunset: 18:00 -03
  • ▼
Tomorrow, a partly cloudy sky is also anticipated.
Temperatures will oscillate between a sweltering 36°C at their highest and a temperate 23°C at their lowest.
The maximum heat index, which integrates air moisture with ambient temperature, is calculated to be a dangerously hot 47°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 predicted high is set to be moderately higher than October's regular 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 period: 12h - 15h 40°C.
Coldest hour: 3h 25°C.

Chance of precipitation

Highest chance: 12h 15%.

Hourly weather forecast

  • 0h
  • 26°C
  • Feels like:
    26°C
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0mm
  • Wind: 10km/hNE 56°
  • Humidity: 87%
  • Pressure: 1011mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 2h
  • 25°C
  • Feels like:
    25°C
Mostly Clear
Mostly Clear
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 8km/hENE 62°
  • Humidity: 90%
  • Pressure: 1010mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 4h
  • 25°C
  • Feels like:
    28°C
Mostly Clear
Mostly Clear
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 7km/hENE 60°
  • Humidity: 90%
  • Pressure: 1010mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Sunrise: 05:50
  • 6h
  • 25°C
  • Feels like:
    27°C
Sunny
Sunny
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 6km/hENE 69°
  • Humidity: 92%
  • Pressure: 1010mbar
  • Visibility: 15km
  • UV index: 0
  • ▼
  • 8h
  • 29°C
  • Feels like:
    33°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0mm
  • Wind: 15km/hENE 66°
  • Humidity: 75%
  • Pressure: 1012mbar
  • Visibility: 16km
  • UV index: 3
  • ▼
  • 10h
  • 32°C
  • Feels like:
    38°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 19km/hENE 70°
  • Humidity: 59%
  • Pressure: 1012mbar
  • Visibility: 16km
  • UV index: 11
  • ▼
  • 12h
  • 34°C
  • Feels like:
    40°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0mm
  • Wind: 15km/hENE 67°
  • Humidity: 52%
  • Pressure: 1010mbar
  • Visibility: 16km
  • UV index: 11
  • ▼
  • 14h
  • 35°C
  • Feels like:
    41°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 14%
  • Precipitation: 0mm
  • Wind: 16km/hNE 41°
  • Humidity: 48%
  • Pressure: 1008mbar
  • Visibility: 16km
  • UV index: 11
  • ▼
  • 16h
  • 34°C
  • Feels like:
    39°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0mm
  • Wind: 16km/hNE 41°
  • Humidity: 48%
  • Pressure: 1007mbar
  • Visibility: 16km
  • UV index: 3
  • ▼
  • 18h
  • 31°C
  • Feels like:
    35°C
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0mm
  • Wind: 17km/hNE 41°
  • Humidity: 56%
  • Pressure: 1008mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Sunset: 18:00
  • 20h
  • 29°C
  • Feels like:
    32°C
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 15km/hNE 47°
  • Humidity: 68%
  • Pressure: 1010mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 22h
  • 27°C
  • Feels like:
    29°C
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0mm
  • Wind: 14km/hNE 54°
  • Humidity: 77%
  • Pressure: 1011mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Tomorrow, a combination of cloudy and sun-filled weather is predicted.
The temperature will vary between a minimum of 25°C and a maximum of 35°C. The feels-like temperature will vary between a minimum of 25°C and a maximum of 41°C. The hottest part of the day will be from 13h to 15h.
The high will be a couple of degrees higher than the normal maximum of 33.5°C for October. The night temperature will be also close to the standard October low of 22.4°C.
The warmest months are October and November, with an average high-temperature of 33.5°C.
Updated: Oct 29, 2026 @ 23:35:40 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, expect a mix of sun and clouds throughout the day.

Tomorrow, the highest temperature will be 36°C, while the lowest temperature will be 23°C. The maximum heat index, which combines air temperature and relative humidity, is estimated at 47°C.
The highest temperature will be a couple of degrees higher than the average maximum of 33.5°C in October. The lowest temperature will be in line with the average low of 22.4°C.

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

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