City in Rio Grande do Sul, Brazil
Porto Alegre weather by month and the best time to visit
When to go to Porto Alegre
Spring (Sep–Nov) and autumn (Mar–May) are mild. Dec–Feb is hot and humid; Jun–Aug is cold, damp and grey. Heavy rain can cause floods.
Porto Alegre weather by month
Average daily high, rainfall and conditions.
- Jan29°120 mm
- Feb29°103 mm
- Mar28°103 mm
- Apr25°98 mm
- May21°112 mm
- Jun19°113 mm
- Jul18°149 mm
- Aug20°116 mm
- Sep22°157 mm
- Oct24°155 mm
- Nov26°110 mm
- Dec28°110 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 29°C85°F | 20°C67°F | 120 mm | 78% | Pleasant |
| February | 29°C85°F | 20°C67°F | 103 mm | 77% | Pleasant |
| March | 28°C83°F | 18°C65°F | 103 mm | 78% | Pleasant |
| April | 25°C78°F | 16°C60°F | 98 mm | 80% | Pleasant |
| May | 21°C70°F | 12°C53°F | 112 mm | 84% | Pleasant |
| June | 19°C66°F | 10°C50°F | 113 mm | 86% | Pleasant |
| July | 18°C65°F | 9°C48°F | 149 mm | 86% | Pleasant |
| August | 20°C68°F | 10°C50°F | 116 mm | 85% | Pleasant |
| September | 22°C71°F | 12°C53°F | 157 mm | 84% | Pleasant |
| October | 24°C75°F | 14°C57°F | 155 mm | 83% | Pleasant |
| November | 26°C79°F | 16°C60°F | 110 mm | 80% | Pleasant |
| December | 28°C83°F | 18°C64°F | 110 mm | 79% | Pleasant |
Best months across Brazil
| Place | Best months | Warmest month |
|---|---|---|
| Rio de Janeiro | Apr–Jun, Sep–Oct | Feb (29°C) |
| São Paulo | Apr–May, Sep–Oct | Oct (27°C) |
| Foz do Iguaçu | Mar–May, Aug–Oct | Jan (32°C) |
| Florianópolis | Feb–Apr, Nov–Dec | Feb (29°C) |
| Salvador | Sep–Feb | Mar (31°C) |
| Jericoacoara | Jul–Dec | Oct (35°C) |
| Ilha Grande | Apr–Jun, Aug–Oct | Jan (30°C) |
| Paraty | Apr–Jun, Aug–Oct | Feb (32°C) |
| Búzios | Apr–Jun, Sep–Nov | Feb (29°C) |
| Fernando de Noronha | Aug–Dec | Apr (28°C) |
| Recife | Sep–Feb | Feb (31°C) |
| Fortaleza | Jul–Dec | Nov (30°C) |
| Manaus | Jun–Oct | Sep (33°C) |
| Pipa | Sep–Feb | Mar (29°C) |
| Natal | Sep–Feb | Mar (29°C) |
| Maceió | Sep–Feb | Mar (30°C) |
| Belo Horizonte | May–Sep | Oct (30°C) |
| Brasília | May–Sep | Sep (31°C) |
| Itacaré | Oct–Mar | Mar (28°C) |
| Morro de São Paulo | Sep–Mar | Mar (29°C) |
| Chapada Diamantina | May–Sep | Oct (34°C) |
| Lençóis Maranhenses | Jun–Sep | Sep (31°C) |
| Bonito | Apr–Sep | Oct (34°C) |
| Ouro Preto | Apr–Sep | Oct (28°C) |
| Curitiba | Mar–May, Sep–Nov | Dec (26°C) |
| Porto Alegre | Mar–May, Sep–Nov | Feb (29°C) |
| Belém | Jul–Nov | Oct (33°C) |
| Balneário Camboriú | Nov–Mar | Feb (29°C) |
| Porto de Galinhas | Sep–Feb | Mar (30°C) |
| Gramado | May–Aug, Dec | Jan (24°C) |
Quick answers
What is the best month to visit Porto Alegre?
Mar–May, Sep–Nov. Spring (Sep–Nov) and autumn (Mar–May) are mild. Dec–Feb is hot and humid; Jun–Aug is cold, damp and grey. Heavy rain can cause floods.
When is the rainy season in Porto Alegre?
Rain peaks in September with about 157 mm. Months with 150 mm or more: Sep–Oct.
What is the hottest month in Porto Alegre?
February, with average highs of 29°C (85°F).
How cold does Porto Alegre get?
The coolest nights are in July, averaging 9°C (48°F).
More about Porto Alegre
Going to Porto Alegre solo?
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Sources
- NASA POWER climatology (2001–2020)
- Prefeitura de Porto Alegre
- Trensurb
- Porto Alegre Airport (Fraport Brasil)
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.