Hottest day
29ºC
Monday, 11/02
My city
No official warning is active for this municipality right now. That does not guarantee everything is fine: see the rest of the page.
24º13º
Today: high / lowno rain forecast today
Official warnings
No official warning is active for this municipality right now. Warnings for the whole country are in the Storms and alerts section.
Week highlights
Air now in Porto Alegre: IQAr 17 (good).
Hottest day
29ºC
Monday, 11/02
Coldest night
13ºC
Wednesday, 10/28
Rainiest day
9.6mm
Tuesday, 11/03
20.6 mm in total this week
Strongest wind gust
43km/h
Tuesday, 11/03
Highest UV
8.8very high
Sunday, 11/01
Each bar runs from the day's low to its high and the colour follows the temperature.
| Day | Rain | High | Low | UV | Gust | IQAr |
|---|---|---|---|---|---|---|
| Wed, 10/28 | 0 mm | 24 ºC | 13 ºC | 8.4 | 37 km/h | 36 |
| Thu, 10/29 | 0.2 mm | 21 ºC | 16 ºC | 7.6 | 35 km/h | 24 |
| Fri, 10/30 | 6.1 mm | 20 ºC | 15 ºC | 6.7 | 37 km/h | 23 |
| Sat, 10/31 | 2.6 mm | 22 ºC | 15 ºC | 7.7 | 35 km/h | 29 |
| Sun, 11/01 | 0 mm | 25 ºC | 16 ºC | 8.8 | 33 km/h | 32 |
| Mon, 11/02 | 2.1 mm | 29 ºC | 17 ºC | 8.8 | 31 km/h | – |
| Tue, 11/03 | 9.6 mm | 28 ºC | 18 ºC | 7.1 | 43 km/h | – |
Source: Open-Meteo.com (forecast and CAMS model air quality).
Hour-by-hour rain
The next 24 hours, Brasília time. Each column is a full hour and its height is the rain forecast for it.
Recent rain
The last 30 days, up to October 27. Each column is a day and its height is that day's rain; in orange, days with 50 mm or more.
Rain in October, up to 10/27
98.4mm
56% of the whole month's normal (174.5 mm)
The city's climate
The average for each month from 1991 to 2020. The current month is highlighted.
Rivers nearby
Guaíba · 8 km away
Level now: 0.96 m · No reference
Guaíba · 8 km away
Level now: 1.46 m · No reference
Guaíba · 10 km away
Level now: 1.35 m · No reference
Source: ANA (telemetry); SGB reference levels where they exist. The level is compared with the station's own at this time of year.
Fire, rain and drought
No likely hotspot within 50 km in the last 24 h.
CEMADEN rain gauges within 30 km: the highest 24 h total was 1.2 mm (43 stations with data).
On the official September 2026 map, Porto Alegre is in the monitored area with no drought.
Sources: INPE and NASA FIRMS (fire), CEMADEN (rain), ANA Drought Monitor.
In an emergency, follow Civil Defense: 199. Fire Department: 193. SAMU: 192.
Dashed: the month's average (1991–2020)Rain (mm)
Fri 08:00 to 19:00
5.9 mm over the period, at most 1.5 mm in one hour · 55% chance
Source: Open-Meteo.com. Model forecast, updated every 3 hours: the timing may change.
Most rain in one day
60.8mm
60.8 mm on September 21, in the last 90 days
Days in a row without rain
1day
Source: Open-Meteo.com, ERA5 reanalysis (a model, not a rain gauge); the latest day may be corrected later. A day without rain: under 1 mm.
Most rain in one day
112.2mm
in April 2000
Source: Open-Meteo.com, ERA5 reanalysis (a grid of about 25 km). These are model values for the city's area, not official records from INMET stations.