December Weather in Porto

Last updated: March 2, 2024

The weather in Porto, Brazil, during December is characterized by an average temperature of 29°C (85°F). Highs can soar to 37°C (99°F), while lows may dip to 23°C (74°F). Typically, the humidity level in Porto throughout December hovers around 76%.

23°C (74°F)

Minimum temperature

29°C (85°F)

Average temperature

37°C (99°F)

Maximum temperature

76%

Humidity

Precipitation and Sunshine hours

In December, Porto averages 69 mm (2.7 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 12 hours 19 minutes of daylight, with the sun shining for approximately 10 hours 11 minutes each day. Additionally, there is a 20% probability of sunny days during this period.

69 mm (2.7 inches)

Precipitation

10 rainy days

Rainy days

10 hours 11 minutes

Sunshine hours

20%

Chance of sun

UV Index

In December, the UV Index in Porto reaches a maximum of 13, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 10 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 2 4 7 11 13 13 11 8 5 2 1 0 0
Exposure Low Moderate High Extreme VeryHigh Moderate Low
Time to burn 45 min 30 min 25 min 10 min 15 min 30 min 45 min

Compare Porto's Climate with Cities Worldwide