Weather forecast for tomorrowCastanhal, Brazil
Weather forecast for tomorrow
Saturday 31. Oct 2026
- 37°C
- 24°C
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0mm
- Wind: 17km/hNE 50°
- Humidity: 57%
- UV index: 11
- Sunrise: 05:50 -03
- Sunset: 18:00 -03
- details ▼
Tomorrow, on Saturday, sunshine will dominate, with only occasional cloud cover.
Temperature span will be from a high of a sweltering 37°C to a low of a warm 24°C.
The maximum heat index, which combines air temperature and relative humidity, is assessed at a life-threatening 50°C. Note that heat index values are valued for light wind and location in the shade. Bear in mind that direct sunshine exposure increases weather impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
The maximum temperature for tomorrow will be slightly warmer than the regular high of 33.5°C in October.
Sunrise will be at 05:50 and sunset at 18:00; tomorrow's daylight will last for 12h and 10min.
Temperature span will be from a high of a sweltering 37°C to a low of a warm 24°C.
The maximum heat index, which combines air temperature and relative humidity, is assessed at a life-threatening 50°C. Note that heat index values are valued for light wind and location in the shade. Bear in mind that direct sunshine exposure increases weather impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
The maximum temperature for tomorrow will be slightly warmer than the regular high of 33.5°C in October.
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 41°C.
Coldest hour: 0h 25°C.
Coldest hour: 0h 25°C.
Chance of precipitation
Highest chance: 6h 9%.
Hourly weather forecast
- 0h
- 25°C
- Feels like:25°C
Clear
- Precip. probability: 4%
- Precipitation: 0mm
- Wind: 9km/hENE 59°
- Humidity: 88%
- Pressure: 1010mbar
- Visibility: 16km
- UV index: 0
- details ▼
- 2h
- 24°C
- Feels like:27°C
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0mm
- Wind: 6km/hENE 67°
- Humidity: 94%
- Pressure: 1010mbar
- Visibility: 15km
- UV index: 0
- details ▼
- 4h
- 24°C
- Feels like:27°C
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0mm
- Wind: 5km/hENE 69°
- Humidity: 93%
- Pressure: 1010mbar
- Visibility: 11km
- UV index: 0
- details ▼
Sunrise: 05:50
- 6h
- 24°C
- Feels like:26°C
Mostly Sunny
- Precip. probability: 9%
- Precipitation: 0mm
- Wind: 5km/hENE 77°
- Humidity: 94%
- Pressure: 1010mbar
- Visibility: 8km
- UV index: 0
- details ▼
- 8h
- 28°C
- Feels like:32°C
Sunny
- Precip. probability: 4%
- Precipitation: 0mm
- Wind: 14km/hENE 65°
- Humidity: 76%
- Pressure: 1012mbar
- Visibility: 16km
- UV index: 3
- details ▼
- 10h
- 32°C
- Feels like:38°C
Sunny
- Precip. probability: 0%
- Precipitation: 0mm
- Wind: 17km/hENE 67°
- Humidity: 58%
- Pressure: 1012mbar
- Visibility: 16km
- UV index: 11
- details ▼
- 12h
- 35°C
- Feels like:41°C
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0mm
- Wind: 14km/hENE 63°
- Humidity: 50%
- Pressure: 1010mbar
- Visibility: 16km
- UV index: 11
- details ▼
- 14h
- 36°C
- Feels like:41°C
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0mm
- Wind: 14km/hNE 37°
- Humidity: 46%
- Pressure: 1008mbar
- Visibility: 16km
- UV index: 11
- details ▼
- 16h
- 34°C
- Feels like:39°C
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0mm
- Wind: 13km/hNNE 26°
- Humidity: 47%
- Pressure: 1007mbar
- Visibility: 16km
- UV index: 3
- details ▼
- 18h
- 32°C
- Feels like:36°C
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0mm
- Wind: 14km/hNNE 28°
- Humidity: 57%
- Pressure: 1008mbar
- Visibility: 16km
- UV index: 0
- details ▼
Sunset: 18:00
- 20h
- 29°C
- Feels like:32°C
Clear
- Precip. probability: 3%
- Precipitation: 0mm
- Wind: 15km/hNE 36°
- Humidity: 68%
- Pressure: 1009mbar
- Visibility: 16km
- UV index: 0
- details ▼
- 22h
- 27°C
- Feels like:30°C
Clear
- Precip. probability: 5%
- Precipitation: 0mm
- Wind: 13km/hNE 43°
- Humidity: 78%
- Pressure: 1010mbar
- Visibility: 16km
- UV index: 0
- details ▼
Tomorrow, on Saturday, a combination of dull and clear weather is forecasted.
The temperature will be between the lowest temperature of 24°C and the highest temperature of 36°C. The feels-like temperature will vary between a minimum of 25°C and a maximum of 42°C. The hottest part of the day will be at 14h and 15h.
The highest temperature tomorrow will be a few degrees higher than October's typical maximum temperature. Tomorrow, the minimum temperature will be also alike with the average low for October.
The warmest months in Castanhal are October and November, with an average high-temperature of 33.5°C.
The temperature will be between the lowest temperature of 24°C and the highest temperature of 36°C. The feels-like temperature will vary between a minimum of 25°C and a maximum of 42°C. The hottest part of the day will be at 14h and 15h.
The highest temperature tomorrow will be a few degrees higher than October's typical maximum temperature. Tomorrow, the minimum temperature will be also alike with the average low for October.
The warmest months in Castanhal are October and November, with an average high-temperature of 33.5°C.
Updated: Oct 30, 2026 @ 20:19:40 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Tomorrow, bright conditions and mild breezes are expected.
Tomorrow, the highest temperature will be 37°C, while the lowest temperature will be 24°C. The maximum heat index, which integrates air moisture with ambient temperature, is estimated at 50°C.
Tomorrow, the maximum temperature will be slightly warmer than the average highest temperature in October. The lowest temperature tomorrow will be in line with the average low temperature.
Tomorrow, the maximum temperature will be slightly warmer than the average highest temperature in October. The lowest temperature tomorrow will be in line with the average low temperature.
On Saturday, in Castanhal, sunrise will be at 05:50 and sunset at 18:00 (-03).
In Castanhal, the length of the day tomorrow will be 12h and 10min.
