Sea Temperature in Portland in December

Complete information on the sea temperature range in the Tasman Sea in Portland in December. Historical daily data. Climate details for December. Tips on swimming conditions and beach relaxation in Portland. 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 Portland in December

14°C

MINIMUN

17°C

AVERAGE

20°C

MAXIMUM

Historical Data of Water Temperature in December in Portland

Water Temperature Chart for Tasman Sea in Portland in December

Sea Temperature Table in Portland in December Over the Past Years

Day	2024	2023	2022	Average
Dec 1	15°C	14°C	15°C	15.0°C
Dec 2	16°C	15°C	16°C	15.8°C
Dec 3	16°C	15°C	16°C	16.0°C
Dec 4	16°C	15°C	16°C	15.8°C
Dec 5	16°C	15°C	16°C	16.0°C
Dec 6	17°C	16°C	16°C	16.3°C
Dec 7	17°C	15°C	17°C	16.3°C
Dec 8	17°C	17°C	16°C	16.5°C
Dec 9	17°C	17°C	15°C	16.0°C
Dec 10	17°C	16°C	15°C	15.8°C
Dec 11	16°C	17°C	16°C	16.3°C
Dec 12	16°C	17°C	16°C	16.3°C
Dec 13	16°C	15°C	16°C	15.8°C
Dec 14	16°C	16°C	16°C	16.3°C
Dec 15	15°C	15°C	16°C	15.8°C
Dec 16	16°C	15°C	16°C	16.0°C
Dec 17	17°C	15°C	15°C	16.3°C
Dec 18	17°C	16°C	15°C	16.3°C
Dec 19	17°C	16°C	15°C	16.0°C
Dec 20	18°C	17°C	15°C	16.8°C
Dec 21	17°C	15°C	15°C	15.8°C
Dec 22	17°C	16°C	16°C	16.3°C
Dec 23	17°C	16°C	15°C	16.3°C
Dec 24	15°C	15°C	16°C	15.8°C
Dec 25	16°C	15°C	16°C	16.0°C
Dec 26	17°C	15°C	16°C	16.3°C
Dec 27	17°C	15°C	16°C	16.3°C
Dec 28	16°C	16°C	17°C	16.5°C
Dec 29	17°C	16°C	16°C	16.5°C
Dec 30	17°C	15°C	16°C	16.3°C

Portland Climate and Swimming Opportunities in December

22°C

Average Day Air Temperature

12°C

Average Night Air Temperature

58 mm

Precipitation Amount per Month

9 days

Number of Rainy Days

15 hrs

Daylight
per Day

8 hrs

Sunshine
per Day

24 km/h

Average Wind Speed

56%

Average
humidity

Portland lies within the Victoria in Australia. The average daytime temperature in Portland in December is 22°C (72°F), while the nighttime average is 12°C (53°F). There are typically nine rainy days during the month, with a total precipitation of 58 mm (2.3 inches). The daylight duration in December in Portland is 15 hours, with an average of 8 hours of sunshine per day. The average wind speed in December is 24 km/h (15 mph), and the humidity level is around 56%.

The water temperature in Portland in December ranges from 15°C to 16°C (59°F to 61°F). At the beginning of the month, the average temperature is around 16°C (61°F), shifting to 16°C (61°F) by mid-December and reaching 16°C (61°F) in the last ten days. Overall, the average sea temperature in Portland for December is 16°C (61°F). Very comfortable swimming conditions. The water is fresh but not too cold, and the air temperature is pleasant.

Frequently Asked Questions About Water Temperatures in December in Portland

What is the sea temperature in Portland in December?

The water temperature in the Tasman Sea in Portland in December ranges from 15°C to 16°C (59°F to 61°F).

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

The average sea temperature in Portland in December is 16°C (61°F), and the air temperature is 22°C (72°F), so very comfortable swimming conditions. The water is fresh but not too cold, and the air temperature is pleasant.