Climate averages 1991–2020

Santa Inês weather
in May.

A hot, wet month: the 9th warmest and the 8th driest of the year.

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

Average high 29.8°C Daytime mean, May
Average low 23.5°C Night-time mean, May
Rainfall 163 mm 22 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Santa Inês · average highYear overview

May is a hot month in Santa Inês: daytime highs average 29.8°C and nights cool to about 23.5°C. By daytime temperature it is the 9th warmest of the 12 months.

Expect about 163 mm of rain on roughly 22 days, which makes May a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 57 min on an average May day.

The nearest other city in this atlas is Bacabal (91 km away). In May its highs average 30.0°C, about as warm as Santa Inês, with 130 mm of rain.

Among the 448 cities listed in Brazil, Santa Inês ranks joint 35th of 448 for the warmest May highs and 407th of 448 for the driest May (rainfall, lowest first). The mean May high of those 448 cities is 25.3°C; Santa Inês is 4.5°C warmer than that mean.

From May to June, average highs rise by 0.5°C to 30.3°C, and monthly rainfall falls from 163 mm to 55 mm.

The annual picture

May 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. 2025303540 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 3500

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

Every month, side by side

Santa Inês climate table

1991–2020
Monthly climate averages for Santa Inês, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 30.2°C23.6°C23.6°C25325.412.312 h
February 29.6°C23.4°C23.4°C27826.012.212 h
March 29.4°C23.3°C23.3°C34129.512.112 h
April 29.4°C23.4°C23.4°C31027.912.012 h
May, selected 29.8°C23.5°C23.5°C16321.512.012 h
June 30.3°C23.3°C23.3°C5511.611.912 h
July 31.2°C23.1°C23.1°C326.411.912 h
August 33.0°C23.6°C23.6°C112.812.012 h
September 34.0°C24.3°C24.3°C122.112.112 h
October 34.4°C24.8°C24.8°C194.012.212 h
November 33.7°C24.8°C24.8°C498.012.312 h
December 32.3°C24.5°C24.5°C12015.312.312 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

May in nearby cities

Distance from Santa Inês

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 Santa Inês) is explained once on the Santa Inês year overview and on the Sources, method and limits page.