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When is the best time to visit Porto Alegre?
In general the best time to visit Porto Alegre is probably January, when the weather is usually great. The hottest months are January, February, December, while the coldest months are May, June, July.
Depending on the activities you want to experience, you may choose different months to visit:
- The best time for a sunbathing holiday is January, February, December. Average maximum temperatures are up to +30°C in January and it has 6 sunny days on average.
- In general, it’s pleasant to walk and do outdoor activities during January - December.
- If you want to avoid wet weather, then your choice is May, June, July with the lowest chance of rain.
Average weather in Porto Alegre in different months
This is the average weather in Porto Alegre for each month based on historic data:
April, November usually has good weather. Average maximum temperature reaches +26°C during November.
In January, February, March, May, June, July, August, September, October, December the weather is average. Expect around 142 rainy days, and the precipitation amounts to approximately 153 mm in September.
Climate in Porto Alegre
Here is the detailed breakdown of the climate in Porto Alegre for each month:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +39°C | +40°C | +38°C | +35°C | +32°C | +31°C | +31°C | +35°C | +36°C | +39°C | +40°C | +39°C |
| Average Maximum Temperature | |||||||||||
| +30°C | +29°C | +28°C | +25°C | +21°C | +19°C | +19°C | +21°C | +21°C | +24°C | +26°C | +29°C |
| Minimum Temperature | |||||||||||
| +13°C | +12°C | +10°C | +6°C | +4°C | +1°C | 0°C | +1°C | +4°C | +7°C | +9°C | +12°C |
| Avg. water temperature | |||||||||||
| - | - | - | - | - | - | - | - | - | - | - | - |
| Humidity, % | |||||||||||
| 76 | 78 | 79 | 81 | 83 | 84 | 83 | 81 | 81 | 79 | 76 | 75 |
| Rain, mm | |||||||||||
| 127 | 120 | 106 | 108 | 104 | 115 | 127 | 118 | 153 | 152 | 124 | 115 |
| Snow, mm | |||||||||||
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Average wind speed, m/s | |||||||||||
| 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 |
| Sunny Days | |||||||||||
| 6 | 5 | 7 | 8 | 7 | 6 | 8 | 9 | 7 | 7 | 8 | 8 |
| Cloud Days | |||||||||||
| 5 | 4 | 6 | 8 | 10 | 11 | 9 | 9 | 8 | 7 | 6 | 6 |
| Rainy Days | |||||||||||
| 18 | 17 | 16 | 13 | 12 | 12 | 12 | 12 | 13 | 15 | 14 | 15 |
| Snowy Days | |||||||||||
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Average Temperature
Here are the average maximum and minimum temperatures in Porto Alegre during the whole year:
The hottest month in Porto Alegre is January with average maximum temperature going up to +30°C. The coldest month is June with the lowest temperatures of +11°C.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Porto Alegre looks throughout the year, in %:
The most humid month in Porto Alegre is June with average humidity going up to 84%. The least humid month is December with an average humidity of 75%.
Rain
Amount of rainfall in mm. in Porto Alegre during the whole year based on historical data:
The sunniest and driest month is August with approximately 9 sunny days and a total precipitation of around 118 mm. The rainiest and wettest month is September with approximately 13 rainy days and 153 mm of total precipitation.
FAQ
Frequently asked questions about the weather in Porto Alegre:
What is the hottest month in Porto Alegre?
The hottest month in Porto Alegre is January with average maximum temperature of +30°C.
What is the coldest month in Porto Alegre?
The coldest month in Porto Alegre is June with minimum temperatures of +11°C.
Is Porto Alegre worth visiting in winter?
Winter in Porto Alegre could be a good time to visit, as the weather is generally ok.
When does it rain the least in Porto Alegre?
if you're looking to visit Porto Alegre when it rains the least, you should plan your trip for September, October, July. During this time, rainfall is rare with the driest month being May with only 104 mm of rain.
Other cities in Brazil
Check out the weather for 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.