Live Weather & Forecast
Weather in Castelo do Piauí
Piauí, Brazil · Real-time conditions & 3-day outlook
25°C
Feels like 28°C
78°F / Feels 83°F
Patchy rain nearby
Castelo do Piauí, Piauí
🌞 Daytime
Updated: 2026-04-21 10:00
Humidity
88%
Wind
3.6 km/h WSW
Wind Gust
10.8 km/h
Pressure
1013 mb
Visibility
9 km
UV Index
3.7
(Moderate)
Precipitation
0.91 mm
Cloud Cover
88%
Dew Point
23.3°C
Wind Degree
236°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
108.9 μg/m³
NO₂
1.4 μg/m³
O₃
59 μg/m³
SO₂
1 μg/m³
PM 2.5
4.1 μg/m³
PM 10
4.5 μg/m³
Today's Hourly Forecast
24-hour breakdown for Castelo do Piauí, Piauí
12 AM
22°
Light rain shower
1 AM
22°
Light rain shower
2 AM
22°
Mist
3 AM
22°
Patchy rain nearby
4 AM
22°
Fog
5 AM
22°
Fog
6 AM
22°
Fog
7 AM
23°
Mist
8 AM
24°
Patchy rain nearby
9 AM
24°
Patchy rain nearby
10 AM
25°
Patchy rain nearby
11 AM
27°
Light rain shower
12 PM
27°
Patchy rain nearby
1 PM
27°
Light rain shower
2 PM
26°
Patchy rain nearby
3 PM
26°
Light rain shower
4 PM
25°
Light rain shower
5 PM
23°
Patchy rain nearby
6 PM
23°
Patchy rain nearby
7 PM
22°
Patchy rain nearby
8 PM
22°
Mist
9 PM
22°
Mist
10 PM
22°
Fog
11 PM
22°
Fog
3-Day Forecast
Daily overview for Castelo do Piauí, Piauí
Today
Moderate rain
27°
/
22°
🌧️ 89% chance of rain
💧 Avg. humidity: 93%
💨 Max wind: 8.3 km/h
🌧️ Total precip: 10.15 mm
☀️ UV Index: 8.3
🌅 Sunrise: 05:47 AM
🌇 Sunset: 05:45 PM
🌙 Waxing Crescent
🌑 Moon: 17% lit
Wed, Apr 22
Patchy rain nearby
28°
/
21°
🌧️ 87% chance of rain
💧 Avg. humidity: 89%
💨 Max wind: 6.5 km/h
🌧️ Total precip: 4.59 mm
☀️ UV Index: 9.9
🌅 Sunrise: 05:47 AM
🌇 Sunset: 05:45 PM
🌙 Waxing Crescent
🌑 Moon: 27% lit
Thu, Apr 23
Patchy rain nearby
30°
/
21°
🌧️ 79% chance of rain
💧 Avg. humidity: 85%
💨 Max wind: 7.6 km/h
🌧️ Total precip: 2.19 mm
☀️ UV Index: 11.9
🌅 Sunrise: 05:47 AM
🌇 Sunset: 05:45 PM
🌙 Waxing Crescent
🌑 Moon: 38% lit
Best Time to Visit Castelo do Piauí
Plan your trip to Castelo do Piauí, Brazil around the most favorable weather conditions.
Peak Season
November – April
Dry season — low humidity, clear skies, comfortable temperatures.
Shoulder Season
May, October
Fewer crowds, moderate prices, mild weather.
Off Season
June – September
Wet/monsoon season; heavier rainfall possible.
Frequently Asked Questions
What is the current weather in Castelo do Piauí?
Current conditions in Castelo do Piauí: Patchy rain nearby, temperature 25°C, humidity 88%.
What is the best time to visit Castelo do Piauí?
The best time to visit Castelo do Piauí is typically November – April. Dry season — low humidity, clear skies, comfortable temperatures.
What is the climate like in Castelo do Piauí?
Castelo do Piauí is located at approximately -5.3° latitude. It has a tropical or subtropical climate with wet and dry seasons.
Does it rain a lot in Castelo do Piauí?
The wettest period in Castelo do Piauí is typically during June – September. Wet/monsoon season; heavier rainfall possible.
What should I pack for a trip to Castelo do Piauí?
For visits to Castelo do Piauí during November – April: light clothing and sun protection. For June – September: layers and a waterproof jacket are recommended.
What are the public holidays in Castelo do Piauí in 2026?
View the 2026 public holidays for Castelo do Piauí on our Holidays page.
What are the GPS coordinates used for the weather forecast in Castelo do Piauí?
The weather forecast for Castelo do Piauí uses coordinates -5.323, -41.5546.
What is the current temperature outside in Castelo do Piauí?
The current outdoor temperature in Castelo do Piauí is 25°C (77°F) with patchy rain nearby.
What is the hourly weather forecast for Castelo do Piauí today?
Today's hour-by-hour weather breakdown for Castelo do Piauí is shown in the Hourly Forecast section above, including temperature, rain chance, and conditions for each hour of the day.
What is the weather in Castelo do Piauí tomorrow hour by hour?
Tomorrow's forecast for Castelo do Piauí shows a high of 28°C and a low of 21°C. See the 3-Day Forecast section above for a full hourly breakdown.
What is the chance of rain today in Castelo do Piauí?
There is a 89% chance of rain in Castelo do Piauí today. Check the hourly forecast above for a time-by-time breakdown of when rain is most likely.
Is it going to rain today in Castelo do Piauí?
Yes, there is a 89% chance of rain in Castelo do Piauí today — consider carrying an umbrella. Check the hourly forecast above for the most likely rain windows.