December Weather in Portland

Last updated: March 2, 2024

The weather in Portland, Australia, during December is characterized by an average temperature of 19°C (66°F). Highs can soar to 33°C (92°F), while lows may dip to 7°C (45°F). Typically, the humidity level in Portland throughout December hovers around 62%.

7°C (45°F)

Minimum temperature

19°C (66°F)

Average temperature

33°C (92°F)

Maximum temperature

62%

Humidity

Precipitation and Sunshine hours

In December, Portland averages 76 mm (3.0 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 14 hours 18 minutes of daylight, with the sun shining for approximately 10 hours 26 minutes each day. Additionally, there is a 39% probability of sunny days during this period.

76 mm (3.0 inches)

Precipitation

10 rainy days

Rainy days

10 hours 26 minutes

Sunshine hours

39%

Chance of sun

UV Index

In December, the UV Index in Portland reaches a maximum of 15, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, 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 1 3 5 8 12 14 15 14 11 7 4 2 1
Exposure Low Moderate VeryHigh Extreme High Moderate Low
Time to burn 45 min 30 min 15 min 10 min 25 min 30 min 45 min

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