Temperature
Hot by day, warm at night.
São Luís is most comfortable in the drier months around July to November. Typical daytime highs run about 85-90°F year-round. The climate is hot and humid. Rainy season runs roughly February to May.

Hot by day, warm at night.
Rainfall is lower than usual here.
Plenty of sun this month.
Hot days with humid air through much of the month.
In August, afternoons feel about 91° and nights feel near 84°.
Predominantly clear skies.
August late afternoons are around 88°F, and early evening stays near 87°F.
Calm winds are typical in August.
Want a side-by-side climate view? Compare São Luís with Singapore.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 27, 2026
Data & methodology