Click on a day for an hourly weather forecast
The temperatures in Porto Alegre in March are comfortable with low of 18°C and and high up to 28°C.
You can expect about 3 to 8 days of rain in Porto Alegre during the month of March. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Porto Alegre in March 2025.
If you’re planning to visit Porto Alegre in the near future, we highly recommend that you review the 14 day weather forecast for Porto Alegre before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 31° / 20° | 8 | 23 | 0 | 161 mm | Ok | Porto Alegre in January |
| February | 31° / 20° | 8 | 21 | 0 | 155 mm | Ok | Porto Alegre in February |
| March | 28° / 18° | 7 | 24 | 0 | 130 mm | Good | Porto Alegre in March |
| April | 26° / 16° | 6 | 25 | 0 | 108 mm | Perfect | Porto Alegre in April |
| May | 22° / 13° | 6 | 25 | 0 | 155 mm | Good | Porto Alegre in May |
| June | 19° / 11° | 6 | 24 | 0 | 169 mm | Good | Porto Alegre in June |
| July | 19° / 11° | 7 | 24 | 0 | 204 mm | Ok | Porto Alegre in July |
| August | 22° / 12° | 6 | 25 | 0 | 182 mm | Good | Porto Alegre in August |
| September | 23° / 13° | 8 | 22 | 0 | 187 mm | Good | Porto Alegre in September |
| October | 25° / 15° | 8 | 23 | 0 | 194 mm | Good | Porto Alegre in October |
| November | 27° / 17° | 6 | 24 | 0 | 141 mm | Perfect | Porto Alegre in November |
| December | 30° / 19° | 7 | 24 | 0 | 134 mm | Ok | Porto Alegre in December |