Weather in Porto Alegre in June

A good month. June works. It is not the peak, but nothing about it fights you. Highs average 19.4 °C, lows 10.3 °C, and rain falls on 11 days — nothing in the month is working against you.

June ranks 5 of 12 in Porto Alegre: past the worst of the year but short of April, which is the month to book if the dates are open.

Rain on 11 days, 4 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average June reaches 30 °C. Across the twenty years measured, the hottest June day reached 28.3 °C and the coldest night fell to -0.1 °C, and the wettest single day dropped 87 mm — roughly 77% of the month's rain in one day.

June is moderately variable: 8 mm in the driest year against 205 mm in the wettest, around an average of 113 mm. Roughly two Junes in three land near that average, and the third does something else entirely.

Wind is light at 7.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 86%, high enough to notice on the warm days without dominating them.

How June sits in the year

Temperatures hold steady either side: 21.6 °C in May, 19.4 here, 18.8 in July. Nothing about the timing within the month matters much.

Daylight in June

June sits at the dark end of Porto Alegre's year — 10.2 hours of daylight against 14.1 at midsummer, holding steady all month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 18.6 °C in June — swimmable, but it takes a moment to commit. The sea peaks at 25.3 °C in February and bottoms out at 16.5 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Busy. Popular without being frantic; book the things you care about, improvise the rest.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

June in Porto Alegre versus nearby

If Porto Alegre is one option among several, the nearby comparison is worth making. Curitiba is close enough to be a coin toss — within a degree on temperature, the same number of rain days. São Paulo is a better bet in June — 2.9 °C warmer, 3 days less rain.

So: June is effectively as good as it gets here — 3 points behind April, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Porto Alegre

See all twelve months in Porto Alegre, or where else to go in June.