Climate averages 1991–2020

Mossoró weather
in May.

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

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

Average high 32.2°C Daytime mean, May
Average low 23.9°C Night-time mean, May
Rainfall 56 mm 9 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Mossoró · average highYear overview

May is a hot month in Mossoró: daytime highs average 32.2°C and nights cool to about 23.9°C. By daytime temperature it is the joint 9th warmest of the 12 months.

Expect about 56 mm of rain on roughly 9 days, which makes May a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 53 min on an average May day.

The nearest other city in this atlas is Russas (75 km away). In May its highs average 31.9°C, about as warm as Mossoró, with 71 mm of rain.

Among the 448 cities listed in Brazil, Mossoró ranks 3rd of 448 for the warmest May highs and joint 151st of 448 for the driest May (rainfall, lowest first). The mean May high of those 448 cities is 25.3°C; Mossoró is 6.9°C warmer than that mean.

From May to June, average highs stay level at 32.2°C, and monthly rainfall falls from 56 mm to 29 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 1500

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

Every month, side by side

Mossoró climate table

1991–2020
Monthly climate averages for Mossoró, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 33.2°C24.4°C24.4°C6812.012.412 h
February 32.6°C24.2°C24.2°C8413.412.312 h
March 31.8°C24.1°C24.1°C12718.312.112 h
April 31.6°C23.9°C23.9°C11716.612.012 h
May, selected 32.2°C23.9°C23.9°C568.911.912 h
June 32.2°C23.3°C23.3°C295.911.812 h
July 32.5°C22.7°C22.7°C183.011.812 h
August 34.0°C22.7°C22.7°C2.80.511.912 h
September 34.9°C23.1°C23.1°C0.90.212.112 h
October 35.2°C23.6°C23.6°C2.10.212.212 h
November 34.9°C24.0°C24.0°C3.10.512.312 h
December 34.4°C24.4°C24.4°C164.112.412 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 Mossoró

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