Weather in Porto Alegre in October 2025
Average weather
Average temperature in Porto Alegre in October
Going from a maximum of +30°C during the day to a minimum of +10°C during the night, the temperature in October averages around +23°C.
The average maximum temperature goes up 10% by the end of the month, compared with the beginning of the month, from +20°C to +22°C.
Is Porto Alegre warm or cold in October?
Porto Alegre is typically warm in October.
Maximum temperatures go up compared to the previous month from +21°C to +24°C. The minimum temperature also goes up from +13°C to +16°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how October is compared to other months in Porto Alegre:
Climate in Porto Alegre in October
| September | October | November | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +21°C | +24°C | +26°C | ||||
| Min. temperature | ||||||
| +4°C | +7°C | +9°C | ||||
| Max. temperature | ||||||
| +36°C | +39°C | +40°C | ||||
| Rainfall | ||||||
| 153 mm | 152 mm | 124 mm | ||||
| Wind | ||||||
| 2 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 81% | 79% | 76% | ||||
| Air pressure | ||||||
| 1016 HPa | 1014 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 7 | 7 | 8 | ||||
| Cloudy days | ||||||
| 8 | 7 | 6 | ||||
| Rainy days | ||||||
| 13 | 15 | 14 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
October weather is still as ok as in September. It’s getting warmer as October arrives. The average maximum temperature goes up from +21°C to +24°C during the day. As October arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 153 mm to 152 mm. It feels drier, as humidity decreases from 81% to 79%. Winds are stronger in comparison to September, going up from 2 m/s to 3 m/s on average. The amount of sunny days stay about the same, averaging 7 sunny days during the month.
But maybe it is worth considering traveling in November as the weather gets better.
Wind
The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Porto Alegre is gradually increasing during October, going from 3 m/s to 5 m/s over the course of the month.
Rain
How was the weather last October in Porto Alegre?
Climate Change over Years
The climate in Porto Alegre in October has not changed much over the last 43 years.
The average temperature was the lowest in 1983 (+23°C) and the highest in 2012 (+26°C). The driest year was 2004 with only 1129 mm of rainfall, and the wettest year was 1998 with 2041 mm.
FAQ
Is October a good time to visit Porto Alegre?
Can you sunbathe in Porto Alegre in October?
Is Porto Alegre rainy in October?
Is it sunny in Porto Alegre in October?
Other cities in Brazil
Monthly weather in Porto Alegre
Source of the data
For this page, we’ve looked at the typical weather in Porto Alegre, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.