Mild
Average highs are around 21°C, so days are mild rather than hot.
May verdict
Mixed for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 5.3h per day, enough for a balanced month. Rainfall averages 95mm, so some wet days are possible.
Monthly averages
Temp
21°C
Rain
95mm
Sun
5.3h
Sea
19°C
Weather score
45
Mixed
Mild
Average highs are around 21°C, so days are mild rather than hot.
Showers
Rainfall averages 95mm, so some wet days are possible.
Some sun
Sunshine averages 5.3h per day, enough for a balanced month.
Cool sea
Sea temperatures average 19°C, so the water can feel cool.
Map
Compare Porto Alegre, Brazil with nearby places by weather score, rain, sun, temperature, and swim conditions.
May21°C average high
May is on the cooler side of Porto Alegre's year, useful if you prefer less intense daytime heat.
Warmest monthsJanuary to March and December
This stretch sets the upper range for average daytime heat.
May95mm average rain
May is one of Porto Alegre's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to May and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
May5.3 hours average sun
May is below Porto Alegre's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJanuary to February and November to December
This stretch has the strongest sunshine in the monthly averages.
May19°C average sea
May is close to Porto Alegre's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJanuary to March and December
Sea temperatures are usually near 26°C in this stretch, so swimming comfort is at its strongest.
May45 weather score
May sits close to Porto Alegre's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJanuary to March and November to December
These months have the strongest weather score in the monthly averages.