Weather in São Luís

Brazil · America/Fortaleza · GMT-3 · 2.53°S, 44.30°W

About São Luís Weather

São Luís, at 2.5° south latitude in Brazil, lies within the tropics and experiences a warm, humid climate throughout the year. Temperatures typically range from 24°C to 35°C (75°F–95°F) regardless of month, with rainfall — rather than temperature — defining the seasons. The major city divides its year into a wet season (November – April), driven by the Inter-Tropical Convergence Zone and monsoon circulation, and a drier period (May – October) of clearer skies and lower humidity. Even in the dry season, temperatures remain warm; the change in humidity and cloud cover is the most noticeable shift.

Climate zone: tropical · Latitude: 2.53°S · Timezone: America/Fortaleza

São Luís Weather by Season

Wet Season

November – April

26–34°C (79–93°F)

Daily afternoon downpours, often clearing quickly. Humidity is high and thunderstorms are frequent. Mornings are typically sunny.

Dry Season

May – October

24–32°C (75–90°F)

Predominantly sunny skies with minimal rainfall. Humidity drops noticeably, making outdoor activities more comfortable.

Data source: Live weather data is fetched from Open-Meteo — a free, open-source weather API that aggregates data from national meteorological services including NOAA (US), ECMWF (Europe), and DWD (Germany). Current conditions update every 15 minutes. Forecasts use the ECMWF IFS model. Seasonal descriptions are based on the Köppen–Geiger climate classification system derived from the latitude of São Luís (2.53°S) and regional climate patterns.

São Luís Weather — Frequently Asked Questions