Climate Insights for São Luís

The climate in São Luís is hot. The average annual temperature is 27°C and approximately 2,254 mm of precipitation falls per year. March is the wettest month, receiving around 474 mm of rainfall. São Luís sits near the equator, so seasonal temperature differences are minimal throughout the year.The climate in São Luís is hot. The average annual temperature is 81°F and approximately 88.8 in of precipitation falls per year. March is the wettest month, receiving around 18.6 in of rainfall. São Luís sits near the equator, so seasonal temperature differences are minimal throughout the year.

São Luís has relatively stable temperatures year-round, staying within a 4°C range. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 28°C. March is the coolest month, with minimum temperatures around 25°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows.São Luís has relatively stable temperatures year-round, staying within a 7°F range. The warmest month is August, when average highs reach 85°F and the mean temperature sits around 82°F. March is the coolest month, with minimum temperatures around 78°F and an average of 80°F. Daily temperature variation is modest, with an average difference of 4°F between highs and lows.

São Luís is a very wet location, receiving approximately 2,254 mm of precipitation annually, which averages out to around 188 mm per month. The wettest month is March, averaging 474 mm of rainfall. April and February also tend to see above-average precipitation. The driest month is September, with just 14 mm. That's 459 mm less than March, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.São Luís is a very wet location, receiving approximately 88.8 in of precipitation annually, which averages out to around 7.4 in per month. The wettest month is March, averaging 18.7 in of rainfall. April and February also tend to see above-average precipitation. The driest month is September, with just 0.6 in. That's 18.1 in less than March, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

São Luís is mildly breezy, with an average annual wind speed of 17km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 23km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in April, with average winds dropping to 13km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 10km/h gap between the calmest and windiest months.São Luís is moderately windy, with an average annual wind speed of 11mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is October, averaging 14mph, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in April, with average winds dropping to 8mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6mph gap between the calmest and windiest months.

The table below shows monthly climate averages for São Luís based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for São Luís based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.