São Luis Weather and Climate: A Comprehensive Guide
São Luis experiences great temperature shifts.
The city's weather can transition from warm days
to mild weather.
It receives mid-range precipitation levels.
Let's now guide you through the climate details for a complete overview.
Average maximum day and minimum night temperature
The climate in São Luis is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a comfortable 29°C in August, the warmest time of the year, to a moderate 16°C during cooler months like January.
At night, temperatures typically drop to an average of around 8°C during these months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Generally, São Luis receives mid-range precipitation levels, with 537 mm annually. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, December receives moderate rainfall, averaging 75 mm of precipitation, recorded across 12 rainy days. In contrast, the drier season, July brings less rainfall, with 2.6 mm over a single rainy day. For more details, please visit our São Luis Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Seasonal changes in sunshine hours are quite dramatic in São Luis. While July receives considerable daily sunshine with up to 12.4 hours, December marks the darkest time of the year, where sunshine is scarce with only 5.2 hours of sunlight per day. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is high throughout the year in São Luis.
The city experiences its highest humidity in December, reaching 77%. In July, the humidity drops to its lowest level at 57%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
clear and no rain clear and no rain clear and no rainForecast for São Luis
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Select a Month of Interest
Check the conditions for any month of the year.
The best time of year to visit São Luis in Portugal
During the months of April, May and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
The hottest season / summer takes place in June, July, August and September.
Yes, the months of June, July and August are very dry.
August has an average maximum temperature of 29°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 16°C.
December tops the wettest month list with 75 mm of rainfall.
July is the driest month with 3 mm of precipitation.
July is the sunniest month with an average of 371 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
