Climate averages 1991–2020

São Luís weather
in June.

A hot, wet month: the 7th warmest and the 7th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 29.1°C Daytime mean, June
Average low 24.7°C Night-time mean, June
Rainfall 153 mm 23 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in São Luís · average highYear overview

June is a hot month in São Luís: daytime highs average 29.1°C and nights cool to about 24.7°C. By daytime temperature it is the 7th warmest of the 12 months.

Expect about 153 mm of rain on roughly 23 days, which makes June a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 59 min on an average June day.

The nearest other city in this atlas is São José de Ribamar (27 km away). In June its highs average 28.9°C, about as warm as São Luís, with 146 mm of rain.

Among the 448 cities listed in Brazil, São Luís ranks joint 71st of 448 for the warmest June highs and 425th of 448 for the driest June (rainfall, lowest first). The mean June high of those 448 cities is 24.7°C; São Luís is 4.4°C warmer than that mean.

From June to July, average highs rise by 0.2°C to 29.3°C, and monthly rainfall falls from 153 mm to 103 mm.

The annual picture

June in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 20253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 4500

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

São Luís climate table

1991–2020
Monthly climate averages for São Luís, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 29.0°C24.7°C24.7°C22125.412.212 h
February 28.3°C24.4°C24.4°C30526.312.212 h
March 28.1°C24.2°C24.2°C44030.312.112 h
April 28.3°C24.3°C24.3°C41428.812.112 h
May 28.8°C24.6°C24.6°C28626.912.012 h
June, selected 29.1°C24.7°C24.7°C15323.012.012 h
July 29.3°C24.7°C24.7°C10320.012.012 h
August 30.6°C25.3°C25.3°C289.012.012 h
September 31.2°C25.5°C25.5°C113.212.112 h
October 31.2°C25.7°C25.7°C133.612.212 h
November 30.9°C25.7°C25.7°C276.812.212 h
December 30.4°C25.5°C25.5°C7315.212.312 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

June in nearby cities

Distance from São Luís

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for São Luís) is explained once on the São Luís year overview and on the Sources, method and limits page.