Live Weather & Forecast
Weather in Porto Alegre
Rio Grande do Sul, Brazil · Real-time conditions & 3-day outlook
22°C
Feels like 25°C
72°F / Feels 77°F
Partly cloudy
Porto Alegre, Rio Grande do Sul
🌙 Nighttime
Updated: 2026-04-21 19:00
Humidity
83%
Wind
3.6 km/h S
Wind Gust
10.8 km/h
Pressure
1014 mb
Visibility
10 km
UV Index
0
(Low)
Precipitation
0.03 mm
Cloud Cover
75%
Dew Point
18.1°C
Wind Degree
176°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
290.9 μg/m³
NO₂
8.6 μg/m³
O₃
53 μg/m³
SO₂
3.1 μg/m³
PM 2.5
5.7 μg/m³
PM 10
5.8 μg/m³
Today's Hourly Forecast
24-hour breakdown for Porto Alegre, Rio Grande do Sul
12 AM
21°
Clear
1 AM
20°
Clear
2 AM
20°
Partly Cloudy
3 AM
20°
Partly Cloudy
4 AM
20°
Partly Cloudy
5 AM
20°
Partly Cloudy
6 AM
19°
Partly Cloudy
7 AM
19°
Partly Cloudy
8 AM
20°
Partly Cloudy
9 AM
20°
Sunny
10 AM
20°
Partly Cloudy
11 AM
21°
Partly Cloudy
12 PM
23°
Partly Cloudy
1 PM
22°
Partly Cloudy
2 PM
23°
Partly Cloudy
3 PM
24°
Patchy rain nearby
4 PM
22°
Patchy light rain
5 PM
20°
Patchy light rain
6 PM
20°
Patchy rain nearby
7 PM
22°
Partly cloudy
8 PM
20°
Patchy rain nearby
9 PM
20°
Partly Cloudy
10 PM
20°
Partly Cloudy
11 PM
20°
Clear
3-Day Forecast
Daily overview for Porto Alegre, Rio Grande do Sul
Today
Patchy rain nearby
24°
/
19°
🌧️ 80% chance of rain
💧 Avg. humidity: 80%
💨 Max wind: 9 km/h
🌧️ Total precip: 1.93 mm
☀️ UV Index: 3.6
🌅 Sunrise: 06:48 AM
🌇 Sunset: 05:59 PM
🌙 Waxing Crescent
🌑 Moon: 17% lit
Wed, Apr 22
Patchy rain nearby
29°
/
20°
🌧️ 86% chance of rain
💧 Avg. humidity: 76%
💨 Max wind: 8.6 km/h
🌧️ Total precip: 1.96 mm
☀️ UV Index: 6.6
🌅 Sunrise: 06:48 AM
🌇 Sunset: 05:58 PM
🌙 Waxing Crescent
🌑 Moon: 27% lit
Thu, Apr 23
Heavy rain
21°
/
20°
🌧️ 86% chance of rain
💧 Avg. humidity: 95%
💨 Max wind: 12.6 km/h
🌧️ Total precip: 29.76 mm
☀️ UV Index: 0.9
🌅 Sunrise: 06:49 AM
🌇 Sunset: 05:57 PM
🌙 Waxing Crescent
🌑 Moon: 38% lit
Best Time to Visit Porto Alegre
Plan your trip to Porto Alegre, Brazil around the most favorable weather conditions.
Peak Season
December – March
Southern hemisphere summer — warm and generally dry.
Shoulder Season
April – May, November
Fewer crowds, moderate prices, mild weather.
Off Season
June – September
Cooler winter months; indoor activities preferred.
Frequently Asked Questions
What is the current weather in Porto Alegre?
Current conditions in Porto Alegre: Partly cloudy, temperature 22°C, humidity 83%.
What is the best time to visit Porto Alegre?
The best time to visit Porto Alegre is typically December – March. Southern hemisphere summer — warm and generally dry.
What is the climate like in Porto Alegre?
Porto Alegre is located at approximately -30° latitude. It experiences a temperate southern hemisphere climate.
Does it rain a lot in Porto Alegre?
The wettest period in Porto Alegre is typically during June – September. Cooler winter months; indoor activities preferred.
What should I pack for a trip to Porto Alegre?
For visits to Porto Alegre during December – March: light clothing and sun protection. For June – September: layers and a waterproof jacket are recommended.
What country is Porto Alegre in?
Porto Alegre is located in Brazil, in the state of Rio Grande do Sul.
What are the public holidays in Porto Alegre in 2026?
View the 2026 public holidays for Porto Alegre on our Holidays page.
What are the GPS coordinates used for the weather forecast in Porto Alegre?
The weather forecast for Porto Alegre uses coordinates -30.0325, -51.2304.
What is the current temperature outside in Porto Alegre?
The current outdoor temperature in Porto Alegre is 22°C (72°F) with partly cloudy.
What is the hourly weather forecast for Porto Alegre today?
Today's hour-by-hour weather breakdown for Porto Alegre 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 Porto Alegre tomorrow hour by hour?
Tomorrow's forecast for Porto Alegre shows a high of 29°C and a low of 20°C. See the 3-Day Forecast section above for a full hourly breakdown.
What is the chance of rain today in Porto Alegre?
There is a 80% chance of rain in Porto Alegre 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 Porto Alegre?
Yes, there is a 80% chance of rain in Porto Alegre today — consider carrying an umbrella. Check the hourly forecast above for the most likely rain windows.