Blacksmith Island Sea Temperature in September

Average sea temperature for Blacksmith Island, Australia across September, based on 10 years of daily readings.

Average

23.2° C

High

24.83° C

Low

21.38° 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.

September is the 9th warmest of 12 months at Blacksmith Island. On average the water sits 2.5° than the year-round mean of 25.7° C.

Compared to August, September is 1.2° warmer than (21.97° C in August). By October the water is usually 25.21° C.

Blacksmith Island Day-by-Day Water Temperature in September

10-year low, average and high

20.5° C

21.8° C

23.0° C

24.3° C

25.5° C

1

5

10

15

20

25

30

Day-by-day low and high band with the 10-year daily average through September. Range Average

Each vertical bar above is one day of September. 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 Blacksmith Island.

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.

September Water Temperature Table for Blacksmith Island

10-year daily averages

Day	Average	Low	High
September 1	22.63° C	21.38° C	23.46° C
September 2	22.64° C	21.49° C	23.47° C
September 3	22.67° C	21.56° C	23.39° C
September 4	22.69° C	21.48° C	23.39° C
September 5	22.74° C	21.39° C	23.44° C
September 6	22.79° C	21.4° C	23.38° C
September 7	22.76° C	21.53° C	23.49° C
September 8	22.74° C	21.75° C	23.58° C
September 9	22.77° C	21.94° C	23.54° C
September 10	22.82° C	21.86° C	23.63° C
September 11	22.92° C	21.98° C	23.57° C
September 12	22.91° C	22.03° C	23.54° C
September 13	22.93° C	22.23° C	23.59° C
September 14	22.91° C	22.36° C	23.52° C
September 15	22.91° C	22.47° C	23.49° C
September 16	22.98° C	22.59° C	23.52° C
September 17	23.11° C	22.67° C	23.74° C
September 18	23.25° C	22.81° C	23.78° C
September 19	23.37° C	22.92° C	24.01° C
September 20	23.54° C	23° C	24.09° C
September 21	23.64° C	23.05° C	24.13° C
September 22	23.64° C	22.84° C	24.2° C
September 23	23.69° C	22.73° C	24.54° C
September 24	23.68° C	22.73° C	24.69° C
September 25	23.78° C	23.15° C	24.83° C
September 26	23.78° C	23.16° C	24.79° C
September 27	23.8° C	23.09° C	24.66° C
September 28	23.9° C	23.09° C	24.76° C
September 29	23.98° C	23.23° C	24.72° C
September 30	24.09° C	23.49° C	24.65° C

Where September Sits in the Year

September highlighted

18.5° C

22.0° C

25.5° C

29.0° C

32.5° C

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

28.67° C

28.87° C

28.45° C

27.16° C

24.76° C

23.01° C

21.87° C

21.97° C

23.2° C

25.21° C

26.99° C

28.2° C

10-year monthly history for Blacksmith Island. 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 September

Compare other Australia water for the same month

Blacksmith Island Location

-20.6167, 149.0500

Open this location on OpenStreetMap →

-20.61670, 149.05000 View on OpenStreetMap →

Blacksmith Island sits at -20.6167°N, 149.0500°E, on the coast of Queensland, 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 Blacksmith Island