São Luís weather by month & the best time to visit
🇧🇷 Brazil · coastal city break · tropical — wet & dry seasons climate
The best time to visit São Luís is October — its sunniest month (Sunshine Score 90/100), with November and August close behind. São Luís averages about 2,413 hours of sunshine a year. Daytime highs around 31°C / 88°F and roughly 15 mm of rain in October.
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- Sun hours / year
- 2,413
- Sunniest month
- October
- Peak score
- 90/100
- Rain / year
- 1,717 mm
- Midday UV at peak
- 11 (extreme)
- Sea at warmest
- 31°C / 88°F
- Population
- 1M
- Elevation
- 45 m
When is the best time to visit São Luís?
For sunshine, the best time to visit São Luís is October, then November and August. The dullest month is January (66/100, 191 mm of rain). The full month-by-month picture is in the table below.
How sunny is São Luís?
São Luís gets a moderate 2,413 hours of sunshine a year. October (90/100) is noticeably better than January (66). It ranks #77 of 131 destinations in Brazil for annual sunshine, below the national median of 2,486 hours. Rain has a clear season: the wettest stretch, around March, carries about 54% of the annual 1,717 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 66 | 29° / 84°F | 24° / 75°F | 191 mm | 10 | 30° / 86°F |
| February | 66 | 28° / 82°F | 24° / 75°F | 247 mm | 10 | 30° / 86°F |
| March | 66 | 28° / 82°F | 24° / 75°F | 322 mm | 10 | 30° / 86°F |
| April | 66 | 28° / 82°F | 25° / 77°F | 357 mm | 10 | 31° / 88°F |
| May | 66 | 28° / 82°F | 25° / 77°F | 238 mm | 10 | 31° / 88°F |
| June | 66 | 28° / 82°F | 24° / 75°F | 149 mm | 9 | 31° / 88°F |
| July | 77 | 29° / 84°F | 24° / 75°F | 88 mm | 10 | 30° / 86°F |
| August | 89 | 31° / 88°F | 24° / 75°F | 23 mm | 11 | 30° / 86°F |
| September | 89 | 31° / 88°F | 24° / 75°F | 23 mm | 11 | 29° / 84°F |
| October | 90 | 31° / 88°F | 25° / 77°F | 15 mm | 11 | 29° / 84°F |
| November | 90 | 31° / 88°F | 25° / 77°F | 17 mm | 10 | 29° / 84°F |
| December | 84 | 31° / 88°F | 25° / 77°F | 47 mm | 10 | 29° / 84°F |
Sea temperature in São Luís by month
The sea off São Luís is warmest in April at around 31°C / 88°F, and coolest in September at 29°C / 84°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See São Luís on the interactive sunshine globe →
Nearby places for sunshine
- Teresina Brazil · 317 km · best in Jul · 2,986 h sun/yr
- Cruz Brazil · 432 km · best in Jul · 2,890 h sun/yr
- Belém Brazil · 490 km · best in Aug · 2,385 h sun/yr
- Marabá Brazil · 626 km · best in Jul · 2,273 h sun/yr
- Fortaleza Brazil · 647 km · best in Jul · 2,889 h sun/yr
- Juazeiro do Norte Brazil · 754 km · best in Jul · 2,989 h sun/yr
Nearest destinations
- Barreirinhas Brazil · 160 km · 2,779 h sun/yr · best in Jul
- Parnaíba Brazil · 280 km · 2,984 h sun/yr · best in Jun
- Paragominas Brazil · 346 km · 2,374 h sun/yr · best in Aug
- Salinópolis Brazil · 404 km · 2,474 h sun/yr · best in Sep
Head-to-head
How São Luís compares month by month: São Luís vs Belém · São Luís vs Teresina · São Luís vs Marabá · São Luís vs Cruz · all comparisons
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