Narrative of a Survey of the Intertropical and Western Coasts of Australia — Vol. 2: Performed between the years 1818 and 1822King, Philip Parker
History
Narrative of a Survey of the Intertropical and Western Coasts of Australia — Vol. 2: Performed between the years 1818 and 1822
King, Philip Parker
Australia -- Description and travel; Natural history -- Australia
The nature of the winds upon the North-west Coast, that is, between Cape
Van Diemen and the North-west Cape, differs very materially from the
regularity of the monsoons in the sea that divides it from Timor and the
islands to the northward; excepting in the narrower part between Cape
Londonderry and the Sahul Bank, where, from the contracted nature of the
sea, more regular winds may be expected. The easterly monsoon commences
about the beginning of April, and in the months of May and June blows
with great strength, and will be found more regular close to the
projecting parts of the coast, but they then rather assume the character
of a sea-breeze, for the nights are generally calm.
After the month of June the winds to the westward of Cape Londonderry are
very irregular, and generally blow from the southward or south-west; they
are however more constant to the westward of Buccaneer's Archipelago,
where the seabreezes blow principally from the North-West along the land.
At intervals, during the east monsoon, the wind blows strong from
South-East, but only for a short time, perhaps only for a few hours.
Ships may creep along the Coast of New Holland to the eastward during the
easterly monsoon, when they could not make any progress in the mid sea,
without being much delayed by calms. Towards the North-west Cape, neither
the monsoon nor the South East trade are much experienced, the wind being
generally from the South-West or North-West.
During the strength of the westerly monsoon, that is, in the months of
December and January, the wind is regular between West-North-West and
West-South-West, and, in the neighbourhood of the North-west Cape,
sometimes blows hard; but even in these tropical regions, when the
weather is very bad, the change is predicted by the barometer, which
otherwise is scarcely affected.
In February, near the coast of New Holland, the monsoon is less constant,
and the wind often blows off the land, so that a ship could make her
westing, when, if more to the northward, it would be impossible for her
to gain any ground. At the latter end of February the westerly winds die
away, and are succeeded by light, baffling, easterly winds, with damp,
unwholesome weather, and attended occasionally by heavy squalls of wind
and rain.
If a ship is detained late in the easterly monsoon, and wishes to get to
the westward, she will find the wind more regular and strong from the
eastward in the neighbourhood of Timor, where the easterly monsoon lasts
until the first or second week in November: in the months of September
and October, to the southward of the parallel of 12 degrees, the winds
are almost constant from South-West.
The currents are stronger according to the regularity and strength of the
wind, and generally set at the rate of one or one knot and a half. The
tides in this part of the coast are noticed in the description of the
places where they were observed. High water at full and change takes
place at:
Public-domain text, read in full here on John Shaqi.
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