Porto Alegre weather in October
October in Porto Alegre: warm, rainy, with clean air — one of the best months to visit.
#2 of 12 months in Porto Alegre · #195 of 897 destinations to visit in October · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Porto Alegre in October
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Porto Alegre climate normals — October
| Daytime high | 24°C / 75°F | 🌤 warm |
|---|---|---|
| Nighttime low | 15°C / 59°F | |
| Rainfall | 134 mm / 5.3 in | 🌧 rainy |
| Rainy days | 11 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 15°C / 58°F | |
| Sunshine | 8.9 h/day | |
| Daylight | 12.8 h | |
| Wind | 19 km/h / 12 mph | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Porto Alegre in October — FAQ
- Is October a good time to visit Porto Alegre?
- October in Porto Alegre: warm, rainy, with clean air — one of the best months to visit. It ranks #2 of 12 months for Porto Alegre on SeasonMap's comfort score (87/100).
- What is the weather like in Porto Alegre in October?
- In October, Porto Alegre averages a daily high of 24.1°C and a low of 15.2°C, with about 133.6 mm of rain over roughly 11.4 rainy days.
- What is the air quality in Porto Alegre in October?
- Porto Alegre has a mean US Air Quality Index of about 38 in October.