Porto Alegre Weather Conditions
Current Temperature Level
Porto Alegre Weather Conditions
Current Temperature Level
Feels Like 19°C
Chances of Rain30%
19°30%9 AM19°27%10 AM20°25%11 AM20°24%12 PM21°23%1 PM20°24%2 PM21°23%3 PM20°24%4 PM20°25%5 PM
18°42%6 PM
18°77%7 PM18°51%8 PM17°59%9 PM17°81%10 PM17°61%11 PM
17°45%12 AM17°67%1 AM17°78%2 AM
17°42%3 AM17°42%4 AM17°47%5 AM17°43%6 AM17°42%7 AM17°45%Skies may remain grey and overcast.
Last Updated: 2026-08-18 08:00 (Local Time)
149°SSE
Direction
11.9km/h
Wind Speed
Gust Speed
7.5m/s
Precipitation
Precipitation
0mm
Pressure
1014mb
UV Index
0.4Low
Today
19
°C
88%Wednesday
18
°C95%Thursday
19
°C82%Friday
14
°C75%Saturday
12
°C64%Sunday
11
°C62%Monday
10
°C66%Tuesday
13
°C65%Wednesday
15
°C75%Thursday
16
°C75%Overcast
Fully overcast skies with a high of 19 °C. Humidity will be 88%, and winds at 15.1 km/h.21°C / 17°C
Humi.88 %
Prec.4.28 mm
Sunrise
06:55 AM11hrs 6min
Sunset
06:01 PMTime
Condition
Temp
Humidity
UV
Wind Speed & Dir.
12 AM
Overcast
21 °C
91 %
0
7.2 kmph / NNE
Overcast
Feels 23 °C
Cover 100 %
Visibility 10 km
1 AM
Overcast
21 °C
91 %
0
6.5 kmph / NNE
OvercastFeels 23 °C
Cover 100 %
Visibility 10 km
2 AM
Overcast
21 °C
89 %
0
7.6 kmph / NNE
OvercastFeels 23 °C
Cover 100 %
Visibility 10 km
3 AM
Overcast
21 °C
87 %
0
6.5 kmph / N
OvercastFeels 23 °C
Cover 100 %
Visibility 10 km
4 AM
Overcast
20 °C
88 %
0
1.8 kmph / NW
OvercastFeels 23 °C
Cover 100 %
Visibility 10 km
5 AM
Overcast
20 °C
88 %
0
4.3 kmph / WNW
OvercastFeels 22 °C
Cover 100 %
Visibility 10 km
6 AM
Overcast
20 °C
88 %
0
3.2 kmph / SW
OvercastFeels 22 °C
Cover 100 %
Visibility 10 km
7 AM
Overcast
19 °C
92 %
0
9 kmph / S
OvercastFeels 20 °C
Cover 100 %
Visibility 10 km
8 AM
Overcast
19 °C
90 %
0.4
11.9 kmph / SSE
OvercastFeels 19 °C
Cover 100 %
Visibility 10 km
9 AM
Overcast
19 °C
86 %
0.8
12.2 kmph / SSE
OvercastFeels 19 °C
Cover 100 %
Visibility 10 km
10 AM
Overcast
20 °C
83 %
2.5
9.7 kmph / SE
OvercastFeels 20 °C
Cover 100 %
Visibility 10 km
11 AM
Overcast
20 °C
82 %
4
10.4 kmph / SSE
OvercastFeels 20 °C
Cover 100 %
Visibility 10 km
12 PM
Overcast
21 °C
78 %
4.3
11.9 kmph / SSE
OvercastFeels 21 °C
Cover 100 %
Visibility 10 km
1 PM
Overcast
20 °C
81 %
4.3
13.3 kmph / SSE
OvercastFeels 20 °C
Cover 100 %
Visibility 10 km
2 PM
Overcast
21 °C
79 %
3.1
13.3 kmph / SSE
OvercastFeels 21 °C
Cover 100 %
Visibility 10 km
3 PM
Overcast
20 °C
80 %
2
15.1 kmph / SSE
OvercastFeels 20 °C
Cover 100 %
Visibility 10 km
4 PM
Overcast
20 °C
82 %
1.2
15.1 kmph / SSE
OvercastFeels 19 °C
Cover 100 %
Visibility 10 km
5 PM
Patchy rain nearby
18 °C
90 %
0.3
14.8 kmph / SSE
Patchy rain nearbyFeels 18 °C
Cover 100 %
Visibility 10 km
6 PM
Rain Shower
18 °C
93 %
0
11.2 kmph / SSE
Rain ShowerFeels 18 °C
Cover 100 %
Visibility 10 km
7 PM
Rain Shower
18 °C
94 %
0
11.2 kmph / SSE
Rain ShowerFeels 18 °C
Cover 100 %
Visibility 10 km
8 PM
Rain Shower
17 °C
96 %
0
10.4 kmph / SSE
Rain ShowerFeels 17 °C
Cover 100 %
Visibility 10 km
9 PM
Rain Shower
17 °C
96 %
0
10.4 kmph / S
Rain ShowerFeels 17 °C
Cover 100 %
Visibility 10 km
10 PM
Rain Shower
17 °C
97 %
0
12.6 kmph / S
Rain ShowerFeels 16 °C
Cover 100 %
Visibility 10 km
11 PM
Mist
17 °C
97 %
0
12.2 kmph / SSE
MistFeels 16 °C
Cover 100 %
Visibility 2 km
30°17°22°15°25°15°
24°18°22°17°26°16°18°11°18°9°15°9°14°7°17°8°
14°11°15°14°15°14°
23°16°28°17°25°18°21°17°21°17°23°15°17°13°14°8°15°7°14°6°19°8°20°11°22°11°22°12°24°13°24°13°24°14°AugustWeather Overview
No. of days:
Sunny
11
Cloudy
2
Rainy
12
Snowy
0
The monthly weather averages in Porto Alegre consist of 11 sunny days, 2 cloudy days, 12 rainy days, and 0 snowy days.
Porto Alegre's Locations Weather Conditions
Brazil's Hottest Cities - August 2026
1.
Manaus, Amazonas
26 °C
Cloudy
60%
0.5
5 kmph / ENE
2.
Presidente Prudente, State Of Sao Paulo
25 °C
Sunny
45%
0.7
10.8 kmph / ENE
3.
Aracatuba, State Of Sao Paulo
25 °C
Sunny
42%
0.9
12.2 kmph / ENE
4.
Cubatao, State Of Sao Paulo
23 °C
Smoky haze
67%
1
3.6 kmph / NW
5.
Sao Sebastiao, State Of Sao Paulo
23 °C
Sunny
66%
1.1
6.5 kmph / NNE
6.
Santos, State Of Sao Paulo
22 °C
Smoky haze
74%
1
3.6 kmph / W
7.
Marilia, State Of Sao Paulo
22 °C
Sunny
50%
0.9
10.1 kmph / NE
8.
Rio de Janeiro, Rio de Janeiro
22 °C
Sunny
66%
1.4
3.6 kmph / NNW
9.
Sao Jose Do Rio Preto, State Of Sao Paulo
22 °C
Sunny
43%
1
19.1 kmph / NE
10.
Catanduva, State Of Sao Paulo
21 °C
Sunny
44%
1
22.3 kmph / NE
Last Updated: 18 Aug 2026, 11:21 AM
City Weather RankingsFAQs About Porto Alegre Weather Conditions
1. What is the current temperature in Porto Alegre today - 18 August 2026?
1. What is the current temperature in Porto Alegre today - 18 August 2026?
The current temperature in Porto Alegre is 19°C, with a feels-like temperature of 19°C. Today's forecast shows a high of 21°C and a low of 17°C, giving a 4 degree swing through the day as of 08:00 AM 18 August 2026.
2. What are the current weather parameters in Porto Alegre today?
2. What are the current weather parameters in Porto Alegre today?
Here is a complete overview of Porto Alegre's current weather conditions as of 08:00 AM 18 August 2026: Condition : Overcast Temperature : 19°C Cool (Feels like 19°C) Humidity : 90% Wind Speed : 11.9 km/h from SSE (149 degrees), Gust 7.5 m/s UV Index : 0.4 (Low Air Pressure : 1014 mb Cloud Cover : 100% Visibility : 10 km Precipitation : 0 mm (86% chance of rain)
3. What is the 10-day weather forecast for Porto Alegre from 08:00 AM 18 August 2026?
3. What is the 10-day weather forecast for Porto Alegre from 08:00 AM 18 August 2026?
From 08:00 AM 18 August 2026, Porto Alegre's 10-day forecast shows this trend: Today (Aug. 18) : Temp. 19°C, Hum. 88% and Overcast condition. Wednesday (Aug. 19) : Temp. 18°C, Hum. 95% and Fog condition. Thursday (Aug. 20) : Temp. 19°C, Hum. 82% and Patchy rain nearby condition. Friday (Aug. 21) : Temp. 14°C, Hum. 75% and Patchy rain nearby condition. Saturday (Aug. 22) : Temp. 12°C, Hum. 64% and Overcast condition. Sunday (Aug. 23) : Temp. 11°C, Hum. 62% and Sunny condition. Monday (Aug. 24) : Temp. 10°C, Hum. 66% and Sunny condition. Tuesday (Aug. 25) : Temp. 13°C, Hum. 65% and Sunny condition. Wednesday (Aug. 26) : Temp. 15°C, Hum. 75% and Rain Showers condition. Thursday (Aug. 27) : Temp. 16°C, Hum. 75% and Rain Showers condition.
4. Will it rain in Porto Alegre today?
4. Will it rain in Porto Alegre today?
As of 08:00 AM 18 August 2026, there is a 30% chance of rainfall in Porto Alegre later today around 2026-08-18 08:00. Current precipitation is 0 mm. Residents are advised to carry an umbrella before heading out.
5. What is the monthly weather forecast for Porto Alegre in August 2026?
5. What is the monthly weather forecast for Porto Alegre in August 2026?
August 2026 in Porto Alegre is forecast to have 11 sunny days, 12 rainy days, 2 cloudy days, and 0 snowy days. Temperatures for the month range from lows around 6°C to highs of 30°C.
6. How does the weather in Porto Alegre affect air quality?
6. How does the weather in Porto Alegre affect air quality?
Weather directly impacts air quality in Porto Alegre. Calm winds, high humidity, fog, and high pressure trap pollutants near the ground, worsening AQI. Strong winds, rainfall, and low pressure help disperse them. Rising temperatures and UV levels intensify ozone and smog formation, while poor visibility signals elevated particulate matter. Monitoring weather alongside AQI gives the clearest picture of outdoor safety.
