Weather in Curitiba in October

A good month. October is a solid month to be in Curitiba. You should expect rain on 18 days of the month, which is more days wet than dry.

October ranks 8 of 12 in Curitiba: past the worst of the year but short of August, which is the month to book if the dates are open.

Rain on 18 days, 5 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

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest October day reached 35.2 °C and the coldest night fell to 6.4 °C, and the wettest single day dropped 46 mm — roughly 31% of the month's rain in one day.

October is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest October on record still delivered 271 mm against 45 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 148 mm average is a reasonable planning figure, not a promise.

Wind is light at 3.8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 82%, high enough to notice on the warm days without dominating them.

How October sits in the year

Temperatures hold steady either side: 22.9 °C in September, 24.4 here, 25.1 in November. Nothing about the timing within the month matters much. Rain has already shifted: 5 days more than September had.

Daylight in October

12.6 hours of daylight, gaining 0.7 hours across the month. That is between Curitiba's extremes of 13.7 and 10.6 hours, so days are long enough not to constrain the plan.

An inland climate

Despite being inland, the year stays fairly even: 17.3 °C between the year's warmest afternoons and coldest nights. At 924 m the air is thin enough to matter — sun that burns faster than the temperature suggests, and nights that cool off quickly.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

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

October in Curitiba versus nearby

If Curitiba is one option among several, the nearby comparison is worth making. São Paulo is close enough to be a coin toss — 3.6 °C warmer, 3 days less rain. Porto Alegre is close enough to be a coin toss — within a degree on temperature, 5 days less rain.

So: October works, with August the better month by 18 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Curitiba

See all twelve months in Curitiba, or where else to go in October.