Curitiba weather in December
December in Curitiba: warm, soaked, with clean air — fine if you can take 19 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#10 of 12 months in Curitiba · #511 of 1413 destinations to visit in December · comfort 78/100 (tier B)
- Days
- 26°C
- Nights
- 18°C
- Wet days
- 19
- Sun
- 9.5 h
- Humidity
- 84%
- Daylight
- 14 h

Traveller notes on Curitiba in December
Other months in Curitiba
Forum posters generally rate October as one of the best months in Brazil weather-wise, marking the start of spring, though posters flag it can still bring real rain during this seasonal transition. Posters describe Curitiba specifically as running noticeably colder than São Paulo, with one discussion citing conditions near 0C possible even outside the deepest part of winter, and forecasts elsewhere in the 10-19C range typical for the shoulder season. Given the limited destination-specific detail for October exactly, this note leans on that broader pattern: Curitiba's high-elevation, southern setting keeps it consistently cooler than most other major Brazilian cities, and October should trend mild rather than warm here even as much of the rest of the country moves into spring. Posters generally rate October as a cool, transitional month for Curitiba, layers still recommended.
Forum posters describe Curitiba's climate as distinctly cool for a Brazilian city, a direct result of its high elevation - one visitor specifically contrasted needing cold-weather clothes in Curitiba while nearby lower-elevation Morretes, just down the mountain, felt properly hot and muggy on the same day. April sits within the city's cooler autumn stretch, comfortable for walking the extensive park system without Brazil's more typical heat and humidity. Posters consistently name the French-inspired Botanical Garden (with its art nouveau greenhouse) and Parque Barigui as the standout April outings, well suited to the mild, temperate conditions this elevation provides.
Add your own note from Curitiba's card on the map.
Curitiba climate normals — December
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Curitiba in December
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsCantata de Natal, Summer holidays in Brazil, school holidays in 3 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Curitiba's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherCuritiba's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Curitiba in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Festival
Cantata de Natal
25 Nov – 23 Dec · usuallyChristmas & New YearCrowdedChoirs sing from the windows of the old Palácio Avenida on Rua XV several evenings a week through December, and the street below fills half an hour before. It is free and it is what the city does instead of a market. Source ↗
Nearby, and something's on
Within 300 km of Curitiba — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Curitiba?
Curitiba in December — FAQ
- Is December a good time to visit Curitiba?
- December in Curitiba: warm, soaked, with clean air — fine if you can take 19 rainy days. It ranks #10 of 12 months for Curitiba on SeasonMap's comfort score (78/100).
- What is the weather like in Curitiba in December?
- In December, Curitiba averages a daily high of 26.1°C and a low of 17.8°C, with about 162.5 mm of rain over roughly 18.7 rainy days.
- What is the air quality in Curitiba in December?
- Curitiba has a mean US Air Quality Index of about 33 in December.
Within 300 km: Florianópolis' Sea warm enough to swim around 1 Dec – 15 Apr.