December Weather in Walla Walla

Last updated: March 2, 2024

The weather in Walla Walla, Australia, during December is characterized by an average temperature of 22°C (72°F). Highs can soar to 38°C (100°F), while lows may dip to 8°C (47°F). Typically, the humidity level in Walla Walla throughout December hovers around 51%.

8°C (47°F)

Minimum temperature

22°C (72°F)

Average temperature

38°C (100°F)

Maximum temperature

51%

Humidity

Precipitation and Sunshine hours

In December, Walla Walla averages 49 mm (1.9 inches) of rainfall, typically over the course of 6 rainy days. The month enjoys an average of 14 hours 30 minutes of daylight, with the sun shining for approximately 11 hours 44 minutes each day. Additionally, there is a 70% probability of sunny days during this period.

49 mm (1.9 inches)

Precipitation

6 rainy days

Rainy days

11 hours 44 minutes

Sunshine hours

70%

Chance of sun

UV Index

In December, the UV Index in Walla Walla reaches a maximum of 14, 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 2 4 7 11 13 14 14 11 8 5 2 1
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 Walla Walla's Climate with Cities Worldwide