Sao Luis weather in May 2025

Expect daytime maximum temperatures of 30°C in Sao Luis in May and very high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 31 days with some rainfall and typically 294 mm of rainfall in the month.

  • 30°C maximum daytime temperature in May in Sao Luis30
    30°C max day temperature
  • 5 hours of sunshine per day
  • 31 days with some rainfall in May in Sao Luis31
    31 days with some rainfall
  • 23°C minimum night-time temperature in May in Sao Luis23
    23°C min night temperature
  • 12 hours of daylight per day in May in Sao Luis12
    12 hours of daylight per day
  • Very high heat & humidity in May in Sao LuisVH
    Very High heat & humidity
  • 294 mm monthly rainfall in May in Sao Luis294
    294 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in May in Sao Luis11
    11 (Extreme) UV index
  • 28°C sea temperature in May in Sao Luis28
    28°C sea temperature

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The May weather guide for Brazil (Sao Luis) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Sao Luis in May?

Daytime temperatures usually reach 30°C in Sao Luis in May with very high heat and humidity, falling to 23°C at night.

How sunny is it in Sao Luis in May?

There are normally 5 hours of bright sunshine each day in Sao Luis in May - that's 45% of daylight hours.

How warm is the sea around Sao Luis in May?

The average sea temperature around Sao Luis in May is 28°C.

Does it rain in Sao Luis in May?

There are usually 31 days with some rain in Sao Luis in May and the average monthly rainfall is 294mm.

Sao Luis May sunrise & sunset times

Browse the sunrise and sunset times for Sao Luis in May 2025. Select a month to view Sao Luis sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:54 17:55
Friday, 16th May 2025 05:54 17:54
Saturday, 31st May 2025 05:55 17:55

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