Live Weather & Forecast
Weather in Arroio Grande
Rio Grande do Sul, Brazil · Real-time conditions & 3-day outlook
18°C
Feels like 18°C
65°F / Feels 65°F
Mist
Arroio Grande, Rio Grande do Sul
🌙 Nighttime
Updated: 2026-04-21 23:45
Humidity
96%
Wind
7.2 km/h N
Wind Gust
14.5 km/h
Pressure
1015 mb
Visibility
2 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
50%
Dew Point
17.7°C
Wind Degree
10°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
113.9 μg/m³
NO₂
3.7 μg/m³
O₃
36 μg/m³
SO₂
1.1 μg/m³
PM 2.5
5.2 μg/m³
PM 10
5.3 μg/m³
Today's Hourly Forecast
24-hour breakdown for Arroio Grande, Rio Grande do Sul
12 AM
19°
Overcast
1 AM
19°
Overcast
2 AM
19°
Patchy rain nearby
3 AM
18°
Patchy rain nearby
4 AM
19°
Partly Cloudy
5 AM
19°
Partly Cloudy
6 AM
19°
Cloudy
7 AM
19°
Cloudy
8 AM
19°
Partly Cloudy
9 AM
21°
Partly Cloudy
10 AM
21°
Cloudy
11 AM
21°
Cloudy
12 PM
21°
Cloudy
1 PM
21°
Cloudy
2 PM
22°
Partly Cloudy
3 PM
24°
Patchy rain nearby
4 PM
24°
Patchy rain nearby
5 PM
23°
Patchy rain nearby
6 PM
21°
Partly Cloudy
7 PM
20°
Partly Cloudy
8 PM
19°
Partly Cloudy
9 PM
19°
Mist
10 PM
19°
Mist
11 PM
18°
Mist
3-Day Forecast
Daily overview for Arroio Grande, Rio Grande do Sul
Today
Patchy rain nearby
24°
/
18°
🌧️ 88% chance of rain
💧 Avg. humidity: 87%
💨 Max wind: 14.4 km/h
🌧️ Total precip: 0.31 mm
☀️ UV Index: 3
🌅 Sunrise: 06:58 AM
🌇 Sunset: 06:04 PM
🌙 Waxing Crescent
🌑 Moon: 17% lit
Wed, Apr 22
Patchy rain nearby
25°
/
17°
🌧️ 84% chance of rain
💧 Avg. humidity: 85%
💨 Max wind: 17.6 km/h
🌧️ Total precip: 0.55 mm
☀️ UV Index: 6.2
🌅 Sunrise: 06:59 AM
🌇 Sunset: 06:03 PM
🌙 Waxing Crescent
🌑 Moon: 27% lit
Thu, Apr 23
Partly Cloudy
21°
/
15°
🌧️ 0% chance of rain
💧 Avg. humidity: 77%
💨 Max wind: 13.3 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 5.4
🌅 Sunrise: 06:59 AM
🌇 Sunset: 06:02 PM
🌙 Waxing Crescent
🌑 Moon: 38% lit
Best Time to Visit Arroio Grande
Plan your trip to Arroio Grande, 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 Arroio Grande?
Current conditions in Arroio Grande: Mist, temperature 18°C, humidity 96%.
What is the best time to visit Arroio Grande?
The best time to visit Arroio Grande is typically December – March. Southern hemisphere summer — warm and generally dry.
What is the climate like in Arroio Grande?
Arroio Grande is located at approximately -32.2° latitude. It experiences a temperate southern hemisphere climate.
Does it rain a lot in Arroio Grande?
The wettest period in Arroio Grande is typically during June – September. Cooler winter months; indoor activities preferred.
What should I pack for a trip to Arroio Grande?
For visits to Arroio Grande during December – March: light clothing and sun protection. For June – September: layers and a waterproof jacket are recommended.
What country is Arroio Grande in?
Arroio Grande is located in Brazil, in the state of Rio Grande do Sul.
What are the public holidays in Arroio Grande in 2026?
View the 2026 public holidays for Arroio Grande on our Holidays page.
What are the GPS coordinates used for the weather forecast in Arroio Grande?
The weather forecast for Arroio Grande uses coordinates -32.2384, -53.0867.
What is the current temperature outside in Arroio Grande?
The current outdoor temperature in Arroio Grande is 18°C (64°F) with mist.
What is the hourly weather forecast for Arroio Grande today?
Today's hour-by-hour weather breakdown for Arroio Grande 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 Arroio Grande tomorrow hour by hour?
Tomorrow's forecast for Arroio Grande shows a high of 25°C and a low of 17°C. See the 3-Day Forecast section above for a full hourly breakdown.
What is the chance of rain today in Arroio Grande?
There is a 88% chance of rain in Arroio Grande 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 Arroio Grande?
Yes, there is a 88% chance of rain in Arroio Grande today — consider carrying an umbrella. Check the hourly forecast above for the most likely rain windows.