Monthly weather forecast and Climate
São Luís, Brazil BR

Warmest month (with highest average high temperature) is November (88.5°F).
Months with lowest average high temperature are February and March (84.9°F).

Months with highest average low temperature are November and December (75.2°F).
Coldest month (with lowest average low temperature) is July (72.7°F).

Month with highest relative humidity is April (90%).
Month with lowest relative humidity is December (71%).

Wettest month (with highest rainfall) is April (18.7").
Driest month (with lowest rainfall) is October (0.3").

Month with highest number of rainy days is March (23 days).
Months with lowest number of rainy days are October and November (1 days).

Best month for swimming (with highest average sea temperature) is April (84°F).
Coldest months (with lowest average sea temperature) are July, August, September, October and November (81°F).

Months with longest days are January, February, March, April, May, June, July, August, September, October, November and December (Average daylight: 12).
Months with shortest days are January, February, March, April, May, June, July, August, September, October, November and December (Average daylight: 12).

Month with most sunshine is August (Average sunshine: 8.4).
Month with least sunshine is March (Average sunshine: 3.5).

Months with highest UV index are January, February, March, April, September, October, November and December (UV index 12).
Months with lowest UV index are June and July (UV index 10).