Sea Temperature in Newcastle in December

Complete information on the sea temperature range in the Tasman Sea in Newcastle in December. Historical daily data. Climate details for December. Tips on swimming conditions and beach relaxation in Newcastle. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Newcastle in December

19°C

MINIMUN

23°C

AVERAGE

27°C

MAXIMUM

Historical Data of Water Temperature in December in Newcastle

Water Temperature Chart for Tasman Sea in Newcastle in December

Sea Temperature Table in Newcastle in December Over the Past Years

Day	2024	2023	2022	Average
Dec 1	21°C	21°C	19°C	20.5°C
Dec 2	21°C	21°C	19°C	20.5°C
Dec 3	20°C	20°C	20°C	20.3°C
Dec 4	21°C	20°C	20°C	20.5°C
Dec 5	20°C	20°C	20°C	20.3°C
Dec 6	21°C	20°C	20°C	20.5°C
Dec 7	20°C	21°C	21°C	21.0°C
Dec 8	21°C	20°C	21°C	20.8°C
Dec 9	21°C	21°C	21°C	21.0°C
Dec 10	21°C	22°C	21°C	21.8°C
Dec 11	20°C	21°C	20°C	20.8°C
Dec 12	20°C	21°C	21°C	21.0°C
Dec 13	21°C	22°C	21°C	21.5°C
Dec 14	20°C	22°C	21°C	21.5°C
Dec 15	21°C	21°C	21°C	21.8°C
Dec 16	21°C	21°C	21°C	21.5°C
Dec 17	20°C	21°C	20°C	21.3°C
Dec 18	21°C	22°C	21°C	21.8°C
Dec 19	21°C	21°C	20°C	21.5°C
Dec 20	21°C	21°C	20°C	21.5°C
Dec 21	20°C	22°C	20°C	21.5°C
Dec 22	21°C	22°C	20°C	21.8°C
Dec 23	21°C	21°C	21°C	21.8°C
Dec 24	22°C	22°C	21°C	22.3°C
Dec 25	22°C	22°C	21°C	22.3°C
Dec 26	22°C	22°C	22°C	22.8°C
Dec 27	22°C	22°C	22°C	22.8°C
Dec 28	23°C	22°C	21°C	22.5°C
Dec 29	23°C	23°C	21°C	22.8°C
Dec 30	22°C	23°C	21°C	22.5°C

Newcastle Climate and Swimming Opportunities in December

26°C

Average Day Air Temperature

17°C

Average Night Air Temperature

76 mm

Precipitation Amount per Month

11 days

Number of Rainy Days

14 hrs

Daylight
per Day

8 hrs

Sunshine
per Day

17 km/h

Average Wind Speed

63%

Average
humidity

Newcastle lies within the New South Wales in Australia. The average daytime temperature in Newcastle in December is 26°C (79°F), while the nighttime average is 17°C (63°F). There are typically 11 rainy days during the month, with a total precipitation of 76 mm (3.0 inches). The daylight duration in December in Newcastle is 14 hours, with an average of 8 hours of sunshine per day. The average wind speed in December is 17 km/h (11 mph), and the humidity level is around 63%.

The water temperature in Newcastle in December ranges from 20°C to 22°C (68°F to 72°F). At the beginning of the month, the average temperature is around 20°C (68°F), shifting to 21°C (70°F) by mid-December and reaching 22°C (72°F) in the last ten days. Overall, the average sea temperature in Newcastle for December is 21°C (70°F). Perfect swimming weather — warm water and hot air make for an enjoyable and relaxing experience.

Sea Temperature in December in Nearby Cities

Frequently Asked Questions About Water Temperatures in December in Newcastle

What is the sea temperature in Newcastle in December?

The water temperature in the Tasman Sea in Newcastle in December ranges from 20°C to 22°C (68°F to 72°F).

Is it possible to swim in the Tasman Sea in Newcastle in December?

The average sea temperature in Newcastle in December is 21°C (70°F), and the air temperature is 26°C (79°F), so perfect swimming weather — warm water and hot air make for an enjoyable and relaxing experience.