December Weather in Newcastle

Last updated: March 2, 2024

The weather in Newcastle, Australia, during December is characterized by an average temperature of 21°C (71°F). Highs can soar to 30°C (87°F), while lows may dip to 17°C (63°F). Typically, the humidity level in Newcastle throughout December hovers around 68%.

17°C (63°F)

Minimum temperature

21°C (71°F)

Average temperature

30°C (87°F)

Maximum temperature

68%

Humidity

Precipitation and Sunshine hours

In December, Newcastle averages 74 mm (2.9 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 14 hours 16 minutes of daylight, with the sun shining for approximately 10 hours 33 minutes each day. Additionally, there is a 45% probability of sunny days during this period.

74 mm (2.9 inches)

Precipitation

11 rainy days

Rainy days

10 hours 33 minutes

Sunshine hours

45%

Chance of sun

UV Index

In December, the UV Index in Newcastle 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 13 10 7 4 2 1
Exposure Low Moderate VeryHigh Extreme VeryHigh High Moderate Low
Time to burn 45 min 30 min 15 min 10 min 15 min 25 min 30 min 45 min

Compare Newcastle's Climate with Cities Worldwide