São Luis Weather in September

September in São Luis brings high temperatures, with highs of 27°C (81°F) and nights dropping to 17°C (63°F). With excellent weather conditions overall, it's a good time to visit.

Rainfall in São Luis in September

Expect around 4 days of rain based on historical data, with 28 mm (1.1 in) average. Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.

Temperature in São Luis in September

If you're visiting São Luis in September, expect excellent temperatures with highs of 27°C (81°F) and overnight lows of 17°C (63°F). September marks the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in São Luis in September

With approximately 270 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit São Luis.