Live Weather & Forecast
Weather in Arco-íris
São Paulo, Brazil · Real-time conditions & 3-day outlook
17°C
Feels like 17°C
63°F / Feels 63°F
Clear
Arco-íris, São Paulo
🌙 Nighttime
Updated: 2026-04-21 05:00
Humidity
73%
Wind
11.2 km/h ESE
Wind Gust
23.4 km/h
Pressure
1014 mb
Visibility
10 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
3%
Dew Point
12.4°C
Wind Degree
109°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
110.9 μg/m³
NO₂
4.3 μg/m³
O₃
45 μg/m³
SO₂
2 μg/m³
PM 2.5
3.8 μg/m³
PM 10
4.4 μg/m³
Today's Hourly Forecast
24-hour breakdown for Arco-íris, São Paulo
12 AM
20°
Clear
1 AM
20°
Clear
2 AM
19°
Clear
3 AM
18°
Clear
4 AM
18°
Clear
5 AM
17°
Clear
6 AM
17°
Clear
7 AM
17°
Sunny
8 AM
19°
Sunny
9 AM
22°
Sunny
10 AM
24°
Sunny
11 AM
26°
Sunny
12 PM
28°
Sunny
1 PM
29°
Sunny
2 PM
29°
Sunny
3 PM
29°
Sunny
4 PM
29°
Sunny
5 PM
27°
Sunny
6 PM
24°
Sunny
7 PM
23°
Clear
8 PM
22°
Clear
9 PM
21°
Clear
10 PM
21°
Clear
11 PM
20°
Clear
3-Day Forecast
Daily overview for Arco-íris, São Paulo
Today
Sunny
29°
/
17°
🌧️ 0% chance of rain
💧 Avg. humidity: 54%
💨 Max wind: 16.2 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 9.3
🌅 Sunrise: 06:36 AM
🌇 Sunset: 06:05 PM
🌙 Waxing Crescent
🌑 Moon: 17% lit
Wed, Apr 22
Sunny
30°
/
17°
🌧️ 0% chance of rain
💧 Avg. humidity: 53%
💨 Max wind: 15.8 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 9.1
🌅 Sunrise: 06:37 AM
🌇 Sunset: 06:04 PM
🌙 Waxing Crescent
🌑 Moon: 27% lit
Thu, Apr 23
Sunny
31°
/
17°
🌧️ 0% chance of rain
💧 Avg. humidity: 53%
💨 Max wind: 16.6 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 9
🌅 Sunrise: 06:37 AM
🌇 Sunset: 06:03 PM
🌙 Waxing Crescent
🌑 Moon: 38% lit
Best Time to Visit Arco-íris
Plan your trip to Arco-íris, 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 Arco-íris?
Current conditions in Arco-íris: Clear, temperature 17°C, humidity 73%.
What is the best time to visit Arco-íris?
The best time to visit Arco-íris is typically November – April. Dry season — low humidity, clear skies, comfortable temperatures.
What is the climate like in Arco-íris?
Arco-íris is located at approximately -21.8° latitude. It has a tropical or subtropical climate with wet and dry seasons.
Does it rain a lot in Arco-íris?
The wettest period in Arco-íris is typically during June – September. Wet/monsoon season; heavier rainfall possible.
What should I pack for a trip to Arco-íris?
For visits to Arco-íris during November – April: light clothing and sun protection. For June – September: layers and a waterproof jacket are recommended.
What are the public holidays in Arco-íris in 2026?
View the 2026 public holidays for Arco-íris on our Holidays page.
What are the GPS coordinates used for the weather forecast in Arco-íris?
The weather forecast for Arco-íris uses coordinates -21.7741, -50.4669.
What is the current temperature outside in Arco-íris?
The current outdoor temperature in Arco-íris is 17°C (63°F) with clear.
What is the hourly weather forecast for Arco-íris today?
Today's hour-by-hour weather breakdown for Arco-íris 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 Arco-íris tomorrow hour by hour?
Tomorrow's forecast for Arco-íris shows a high of 30°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 Arco-íris?
Rain is not expected in Arco-íris today. Current forecast shows no significant rain probability.
Is it going to rain today in Arco-íris?
No, rain is not forecast for Arco-íris today. Current conditions show clear to partly cloudy skies.