Temperatures in May
It's hot in May in São Luís with an average temperature of 32°C. Temperatures this month range from a low of 32°C to a high of 33°C. At night, you can expect temperatures between 23°C and 24°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for São Luís in May. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of May
The month of May starts in São Luís with hot temperatures, averaging around 33°C during the day and nights close to 24°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-May
By mid-May, the average daytime temperature stays the same at 33°C, with nights close to 24°C. There might be a few showers during this period, but plenty of dry days with sunshine too. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
End of May
By the end of May, the average daytime temperature in São Luís will be around 33°C, with nights close to 24°C. A shower might show up, but overall the weather will be dry and sunny. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Discover cheap trips to São Luís 
Precipitation in May
In May, there is an average of 90 mm of precipitation, spread over 12 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
The average precipitation chance is 39% per day this month. The weather’s variable. There are also a few days with higher precipitation chances.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in May for São Luís. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
São Luís in May |
London | ||
|---|---|---|---|
 Average Temperature |
32°C | 18°C | |
 High Temp |
33°C | 21°C | |
| Low Temp |
32°C | 15°C | |
 Total Precipitation |
90 mm | 46 mm | |
| Rainy Days |
12 days | 8 days | |
April
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is May a good time to visit São Luís?
May is a great month to be in São Luís for sunny weather. You’ll get high temperatures and not too much rain this month.
Temperature records for São Luís in May
With 36°C, São Luís hit the highest temperature in the last 10 years in May 2017. The lowest daytime temperature in this month was 26°C in 2020. The extreme night temperatures ranged from a low of 14°C to a high of 25°C.
Check out the climate of São Luís for all months and discover the best travel time
Curious about the climate in other parts of Brazil? Check out the weather and climate in places like Rio de Janeiro, Salvador, Pipa, or have a look at other destinations in Brazil.
Plan your next holiday
Don’t miss the best holiday deals for São Luís and see what our partners have for you.
Daily Temperature in May in São Luís
This chart shows the average daily temperatures, both day and night, for each day in May in São Luís, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in May in São Luís
The chart below shows the average daily precipitation in May for São Luís, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for May, you can expect around 12 days of rain in São Luís.
Daily UV Index in May in São Luís
This chart shows the average daily UV index in May in São Luís, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in May in São Luís Over the Years
This chart shows the average temperature in May in São Luís, measured in degrees Celsius, over the past years.
Total Precipitation in May in São Luís Over the Years
This chart shows the average precipitation in May in São Luís, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in May for São Luís
Click on a specific day in May for detailed info on the typical weather on that day in São Luís. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in São Luís
Have you been to São Luís in May?
Share your weather experience in May in São Luís.
Average Weather in São Luís by Month
Click on a month below to see detailed weather info for São Luís. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
