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São Luís Weather in May
May in São Luís typically sees daytime highs of 30°C (86°F) and nighttime lows of 25°C (77°F). May falls within the rainy season, so heavy rainfall is to be expected.
Rainfall in São Luís in May
São Luís is in the rainy season in May, with rain on around 31 days and an average of 291 mm (11 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.
Temperature in São Luís in May
Daytime temperatures in São Luís reach 30°C (86°F) in May, dropping to 25°C (77°F) at night. This kind of day-to-night contrast is typical for this time of year. At 25°C (77°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.
Sunshine in São Luís in May
With about 163 hours of sunshine, the area enjoys a nice balance of sun and rainy moments, creating a pleasant environment.If you're looking for dry conditions and comfortable temperatures, May may not be the ideal month to visit São Luís. Our weather planner can help you explore destinations with more pleasant weather conditions.
São Luís Temperature in May
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Chance of Rain
102%
Precipitation
291 mm (11 in)
Rainy days
31 days
Humidity
89% *
Sunshine
163 hours *
Percentage Sunshine
*
São Luís Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in São Luís - and find the best time to visit.
Best Places in Brazil in May
Find out more about the weather in Brazil and which places have the best travel conditions in this month. See all of Brazil in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in São Luís in May
Warm weather calls for comfortable, breathable clothing in May. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in São Luís in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping7/10 -
Outdoor sports7/10
São Luís 3-Day Forecast
More climate data for São Luís
Temperature Rainfall Sunshine Humidity
See the full São Luís climate overview or explore weather in Brazil.
Popular in May
Where to go in May - average daytime high across popular destinations.
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