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Port Phillip Bay Sea Temperature in March

Victoria, Australia

February Port Phillip Bay year-round → April

Average sea temperature for Port Phillip Bay, Australia across March, based on 10 years of daily readings.

Average

20.61° C

High

23.91° C

Low

18.39° C

Water at this temperature is very pleasant to swim in. If you tend to wear a wetsuit when swimming, you might consider removing it now to avoid the body overheating.

March is the 3rd warmest of 12 months at Port Phillip Bay. On average the water sits 4.3° than the year-round mean of 16.33° C.

Compared to February, March is 0.9° cooler than (21.5° C in February). By April the water is usually 18.13° C.

Port Phillip Bay Day-by-Day Water Temperature in March

10-year low, average and high

17.5° C
19.4° C
21.3° C
23.1° C
25.0° C
1
5
10
15
20
25
31
Day-by-day low and high band with the 10-year daily average through March. Range Average

Each vertical bar above is one day of March. The shaded band covers the range the water has reached on that day across the last 10 years — the lowest reading at the bottom, the highest at the top. The line running through the bars is the daily average over those 10 years, so you can see the typical shape of the month at Port Phillip Bay.

A narrow band means the temperature on that day has stayed close to the average year on year. A taller band means it has swung more, often because of changeable weather around that time of year. Hovering a day pulls up its low, average, and high.

March Water Temperature Table for Port Phillip Bay

10-year daily averages

Day Average Low High
March 1 21.31° C 19.7° C 22.61° C
March 2 21.23° C 19.62° C 22.72° C
March 3 21.14° C 19.57° C 22.58° C
March 4 21.12° C 19.49° C 22.54° C
March 5 21.05° C 19.28° C 22.03° C
March 6 20.96° C 19.25° C 22.17° C
March 7 20.86° C 19.21° C 21.98° C
March 8 20.84° C 19.16° C 22.29° C
March 9 20.94° C 19.17° C 22.92° C
March 10 21.09° C 19.11° C 23.49° C
March 11 21.18° C 19.77° C 23.91° C
March 12 21.06° C 19.99° C 23.47° C
March 13 20.91° C 19.78° C 22.77° C
March 14 20.86° C 19° C 22.8° C
March 15 20.84° C 18.73° C 23.59° C
March 16 20.8° C 18.94° C 23.15° C
March 17 20.8° C 19.17° C 22.67° C
March 18 20.74° C 18.96° C 22.25° C
March 19 20.75° C 18.92° C 22.23° C
March 20 20.59° C 18.92° C 21.91° C
March 21 20.42° C 18.66° C 21.49° C
March 22 20.37° C 18.56° C 21.41° C
March 23 20.34° C 18.48° C 21.53° C
March 24 20.25° C 18.52° C 21.25° C
March 25 20.09° C 18.46° C 21.25° C
March 26 20.06° C 18.57° C 21.66° C
March 27 19.89° C 18.44° C 21.09° C
March 28 19.77° C 18.4° C 20.98° C
March 29 19.66° C 18.39° C 20.92° C
March 30 19.59° C 18.54° C 20.67° C
March 31 19.5° C 18.65° C 20.44° C

Where March Sits in the Year

March highlighted

8.0° C
12.5° C
17.0° C
21.5° C
26.0° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
21.48° C
21.5° C
20.61° C
18.13° C
15.46° C
12.83° C
11.2° C
11.16° C
12.37° C
14.76° C
17.09° C
19.43° C
10-year monthly history for Port Phillip Bay. Bars span historical low to high; the line marks the monthly average. Range Average
January → February → March → April → May → June → July → August → September → October → November → December →

Nearby Locations in March

Compare other Australia water for the same month

Port Phillip Bay Location

-38.1732, 144.8731

-38.17321, 144.87312 View on OpenStreetMap →

Port Phillip Bay sits at -38.1732°N, 144.8731°E, on the coast of Victoria, Australia. The marker on the map shows the spot the readings on this page come from. It usually sits a short distance from the town centre, out on the open water itself, so the numbers stay tied to the coast rather than a generic point inland.

Coastlines bend, headlands focus the water, and the temperature can run noticeably differently between two beaches that look close together on a map. Comparing nearby locations is a quick way to see how local geography is shaping the readings.

Nearest locations to Port Phillip Bay