December weather forecast
Curitiba, Brazil

Concluding the year in Curitiba, Brazil, December marks a return to the peak summer season with temperatures reaching an average high of 25.4°C (77.7°F). Humidity also increases to match May’s high of 82%, pointing to warmer and wetter days ahead. December records an amplified rainfall measure with an estimated 152mm (5.98") over 13 days, accounting for the rise in humidity. Despite sporadic showers, December’s extended daylight hours leave plenty of time for outdoor activities under the Curitiba sun.

Temperature

Curitiba's shift into December is marked by a subtle change to a still warm 25.4°C (77.7°F) from November's 24.5°C (76.1°F) in temperature. An average minimum temperature of 15.4°C (59.7°F) marks the month of December in Curitiba, Brazil.

Humidity

In December, the average relative humidity in Curitiba is 82%.

Rainfall

In December, in Curitiba, the rain falls for 13 days. Throughout December, 152mm (5.98") of precipitation is accumulated. In Curitiba, during the entire year, the rain falls for 116 days and collects up to 1484mm (58.43") of precipitation.

Daylight

With an average of 13h and 42min of daylight, December has the longest days of the year in Curitiba.
On the first day of December, sunrise is at 05:18 and sunset at 18:54. On the last day of the month, sunrise is at 05:29 and sunset at 19:11 -03.

Sunshine

In Curitiba, the average sunshine in December is 5.5h.

UV index

The months with the highest UV index are January through March, November and December, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 12 during December leads to these advisories:
Implement all key precautions. Warding off sun damage is critical. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.