Weather Forecast for Porto Alegre
Rio Grande do Sul, Brazil
Share this weather forecast
Current Weather - Porto Alegre: 25°C
Current Weather - Porto Alegre: 25°C
Rio Grande do Sul, Brazil
Moderate or heavy rain with thunder
Feels like 27°C
Wind
10 km/h WSW
Humidity
94%
Pressure
1009 mb
UV Index
5
Visibility
5 km
Patchy rain nearby
Tuesday, December 23, 2025
High
29°C
Low
24°C
Rain Chance
87%
Hourly Forecast
26°C
26°C
25°C
25°C
25°C
Day Statistics
Maximum Wind
12 km/h
Humidity
80%
Precipitation
3 mm
UV Index
3
Visibility
9 km
Rain Chance
87%
Snow Chance
0%
Sun & Moon
Sunrise
05:22 AM
Sunset
07:27 PM
Moonrise
08:20 AM
Moonset
10:17 PM
Moon Phase
Waxing Crescent
Moon Illumination
8%
Air Quality
PM2.5
14.9
μg/m³
PM10
15
μg/m³
NO₂
12
μg/m³
O₃
63
μg/m³
SO₂
4
μg/m³
CO
282.1
μg/m³
Heavy rain
Wednesday, December 24, 2025
High
33°C
Low
23°C
Rain Chance
87%
Hourly Forecast
25°C
24°C
24°C
24°C
24°C
24°C
25°C
26°C
28°C
29°C
31°C
32°C
33°C
33°C
33°C
32°C
25°C
24°C
23°C
24°C
24°C
24°C
24°C
24°C
Day Statistics
Maximum Wind
15 km/h
Humidity
78%
Precipitation
27 mm
UV Index
4
Visibility
9 km
Rain Chance
87%
Snow Chance
0%
Sun & Moon
Sunrise
05:22 AM
Sunset
07:27 PM
Moonrise
09:20 AM
Moonset
10:49 PM
Moon Phase
Waxing Crescent
Moon Illumination
14%
Air Quality
PM2.5
8.2
μg/m³
PM10
8.4
μg/m³
NO₂
7.3
μg/m³
O₃
80.2
μg/m³
SO₂
3.6
μg/m³
CO
234.4
μg/m³
Heavy rain
Thursday, December 25, 2025
High
29°C
Low
22°C
Rain Chance
89%
Hourly Forecast
24°C
23°C
23°C
23°C
23°C
23°C
24°C
25°C
26°C
28°C
28°C
29°C
29°C
28°C
26°C
26°C
25°C
23°C
23°C
23°C
22°C
22°C
22°C
22°C
Day Statistics
Maximum Wind
16 km/h
Humidity
88%
Precipitation
28 mm
UV Index
3
Visibility
9 km
Rain Chance
89%
Snow Chance
0%
Sun & Moon
Sunrise
05:23 AM
Sunset
07:28 PM
Moonrise
10:19 AM
Moonset
11:19 PM
Moon Phase
Waxing Crescent
Moon Illumination
22%
Air Quality
PM2.5
11.5
μg/m³
PM10
11.8
μg/m³
NO₂
11.7
μg/m³
O₃
53
μg/m³
SO₂
4
μg/m³
CO
231.1
μg/m³
Patchy rain nearby
Friday, December 26, 2025
High
24°C
Low
22°C
Rain Chance
89%
Hourly Forecast
22°C
22°C
22°C
22°C
22°C
22°C
22°C
22°C
22°C
22°C
22°C
23°C
24°C
23°C
23°C
23°C
24°C
23°C
23°C
22°C
22°C
22°C
22°C
22°C
Day Statistics
Maximum Wind
15 km/h
Humidity
91%
Precipitation
1 mm
UV Index
1
Visibility
9 km
Rain Chance
89%
Snow Chance
0%
Sun & Moon
Sunrise
05:23 AM
Sunset
07:28 PM
Moonrise
11:19 AM
Moonset
11:48 PM
Moon Phase
Waxing Crescent
Moon Illumination
31%
Air Quality
PM2.5
7.4
μg/m³
PM10
7.8
μg/m³
NO₂
8.2
μg/m³
O₃
50.4
μg/m³
SO₂
3.1
μg/m³
CO
177.9
μg/m³
Moderate rain
Saturday, December 27, 2025
High
34°C
Low
21°C
Rain Chance
87%
Hourly Forecast
22°C
22°C
21°C
21°C
21°C
21°C
23°C
24°C
23°C
25°C
28°C
30°C
31°C
33°C
34°C
32°C
31°C
29°C
28°C
26°C
24°C
24°C
23°C
22°C
Day Statistics
Maximum Wind
14 km/h
Humidity
86%
Precipitation
6 mm
UV Index
1
Visibility
8 km
Rain Chance
87%
Snow Chance
0%
Sun & Moon
Sunrise
05:24 AM
Sunset
07:28 PM
Moonrise
12:20 PM
Moonset
No moonset
Moon Phase
First Quarter
Moon Illumination
41%
Air Quality
PM2.5
7.5
μg/m³
PM10
8.4
μg/m³
NO₂
7.6
μg/m³
O₃
48.2
μg/m³
SO₂
3.4
μg/m³
CO
189.5
μg/m³
Patchy rain nearby
Sunday, December 28, 2025
High
31°C
Low
22°C
Rain Chance
83%
Hourly Forecast
22°C
22°C
22°C
22°C
22°C
22°C
24°C
25°C
27°C
28°C
30°C
31°C
31°C
31°C
31°C
30°C
28°C
26°C
25°C
24°C
24°C
23°C
23°C
23°C
Day Statistics
Maximum Wind
14 km/h
Humidity
81%
Precipitation
3 mm
UV Index
9
Visibility
8 km
Rain Chance
83%
Snow Chance
0%
Sun & Moon
Sunrise
05:25 AM
Sunset
07:29 PM
Moonrise
01:23 PM
Moonset
12:17 AM
Moon Phase
Waxing Gibbous
Moon Illumination
52%
Patchy rain nearby
Monday, December 29, 2025
High
27°C
Low
21°C
Rain Chance
89%
Hourly Forecast
22°C
22°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
22°C
22°C
23°C
24°C
25°C
26°C
27°C
27°C
27°C
26°C
24°C
23°C
23°C
22°C
22°C
Day Statistics
Maximum Wind
14 km/h
Humidity
88%
Precipitation
2 mm
UV Index
8
Visibility
8 km
Rain Chance
89%
Snow Chance
0%
Sun & Moon
Sunrise
05:25 AM
Sunset
07:29 PM
Moonrise
02:29 PM
Moonset
12:50 AM
Moon Phase
Waxing Gibbous
Moon Illumination
63%
Solar Radiation Data
Shortwave Radiation
457.72
Diffuse Radiation
224.19
DNI
827.01
GTI
539.93
When to visit Porto Alegre?
Plan your perfect trip with our month-by-month weather guide
January
February
March
April
May
June
July
August
September
October
November
December
Your guide to the flawless travel experience
Popular Countries
Company
Get our app
