Climate averages 1991–2020

Barra do Piraí weather
in March.

A hot, very wet month: the 4th warmest and the 8th driest of the year.

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

Average high 28.4°C Daytime mean, March
Average low 20.6°C Night-time mean, March
Rainfall 195 mm 21 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Barra do Piraí · average highYear overview

March is a hot month in Barra do Piraí: daytime highs average 28.4°C and nights cool to about 20.6°C. By daytime temperature it is the 4th warmest of the 12 months.

Expect about 195 mm of rain on roughly 21 days, which makes March a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 14 min on an average March day.

The nearest other city in this atlas is Japeri (26 km away). In March its highs average 30.1°C, 1.8°C warmer than Barra do Piraí, with 200 mm of rain.

Among the 448 cities listed in Brazil, Barra do Piraí ranks joint 192nd of 448 for the warmest March highs and joint 330th of 448 for the driest March (rainfall, lowest first). The mean March high of those 448 cities is 27.9°C; Barra do Piraí is 0.5°C warmer than that mean.

From March to April, average highs fall by 1.6°C to 26.8°C, and monthly rainfall falls from 195 mm to 89 mm.

The annual picture

March 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. 101520253035 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 3000

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

Every month, side by side

Barra do Piraí climate table

1991–2020
Monthly climate averages for Barra do Piraí, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 29.4°C21.2°C21.2°C28222.013.313 h
February 30.0°C21.3°C21.3°C20217.712.913 h
March, selected 28.4°C20.6°C20.6°C19520.512.212 h
April 26.8°C19.0°C19.0°C8912.311.612 h
May 24.5°C16.3°C16.3°C539.111.111 h
June 24.2°C14.9°C14.9°C285.410.811 h
July 24.0°C14.4°C14.4°C285.410.911 h
August 25.3°C15.1°C15.1°C275.411.311 h
September 26.4°C16.9°C16.9°C669.911.912 h
October 27.3°C18.4°C18.4°C11213.912.613 h
November 27.0°C19.2°C19.2°C20219.113.213 h
December 28.5°C20.5°C20.5°C24822.113.513 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

March in nearby cities

Distance from Barra do Piraí

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 Barra do Piraí) is explained once on the Barra do Piraí year overview and on the Sources, method and limits page.