Curitiba weather in December
December in Curitiba: warm, rainy, with clean air — fine if you can take 20 rainy days.
#6 of 12 months in Curitiba · #158 of 897 destinations to visit in December · comfort 85/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Curitiba in December
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Curitiba climate normals — December
| Daytime high | 25°C / 77°F | 🌤 warm |
|---|---|---|
| Nighttime low | 17°C / 63°F | |
| Rainfall | 137 mm / 5.4 in | 🌧 rainy |
| Rainy days | 20 days | |
| Humidity | 83% | 💦 very humid |
| Dew point | 17°C / 63°F | |
| Sunshine | 9.9 h/day | |
| Daylight | 13.7 h | |
| Wind | 15 km/h / 10 mph | |
| Air quality (US AQI) | 33 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Curitiba in December — FAQ
- Is December a good time to visit Curitiba?
- December in Curitiba: warm, rainy, with clean air — fine if you can take 20 rainy days. It ranks #6 of 12 months for Curitiba on SeasonMap's comfort score (85/100).
- What is the weather like in Curitiba in December?
- In December, Curitiba averages a daily high of 24.8°C and a low of 17°C, with about 136.5 mm of rain over roughly 19.6 rainy days.
- What is the air quality in Curitiba in December?
- Curitiba has a mean US Air Quality Index of about 33 in December.