Weather in Curitiba

February is the warmest month (average 22.0°C, high 26.6°C) and July is the coolest (average 14.3°C, low 9.3°C). That 7.7°C swing in monthly averages is the first thing to plan around in Curitiba.

Rain is rain in every month and about 1630 mm across the year. The wettest month is January at 221 mm; the driest is August at 77 mm. Curitiba is in Brazil at 25.4°S. The 2001–2020 NASA POWER daily record describes a mild oceanic climate. On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are December, January, and February.

How warm Curitiba gets

The heat peaks in February, when the typical afternoon is 26.6°C. The opposite pole is July, when mornings average 9.3°C.

Across the year the mean afternoon high is 23.6°C. If you want the smallest day–night shock, look at months where the high and low sit close together; February nights still hold 17.4°C.

When Curitiba gets wet

Rain does not take a season off. Curitiba receives about 1630 mm a year, and even August still sees 77 mm. January is the peak at 221 mm and 25 days with at least 1 mm.

Humidity peaks near 86%. That usually lines up with the wetter months rather than the hottest ones.

Distinctive months in Curitiba

January is the wettest month — 221 mm and 25 rainy days, with 83% humidity. February is the warmest month. Afternoon highs average 26.6°C and nights settle near 17.4°C, with 192 mm of rain.

The year bottoms out in July. Plan for 9.3°C at night and 19.3°C in the afternoon. August is the driest month, averaging only 77 mm across 8 rainy days. Highs sit near 21.2°C.

When the score favours a visit

The three months with the highest comfort score are December, January, and February: December (21.4°C average, 173 mm, 81% humidity); January (21.9°C average, 221 mm, 83% humidity); February (22.0°C average, 192 mm, 83% humidity). Those months sit across the year end, so they are listed in season order rather than January-to-December. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you prefer the hottest stretch, that is February. The coolest stretch is July.

Curitiba and other cities in Brazil

São Paulo is about 339 km away: Curitiba is 0.9°C cooler than São Paulo in its hottest month and 278 mm wetter over the year than São Paulo. São Paulo’s wettest month is January (230 mm) versus January here.

Guarulhos is about 353 km away: Curitiba is 1.4°C cooler than Guarulhos in its hottest month and 251 mm wetter over the year than Guarulhos. Guarulhos’s wettest month is January (228 mm) versus January here.

Porto Alegre is about 547 km away: Curitiba is 3.0°C cooler than Porto Alegre in its hottest month and 184 mm wetter over the year than Porto Alegre. Porto Alegre’s wettest month is September (157 mm) versus January here.