Tides and Currents
The max. tidal range is abt. 0.58 m. Average spring tides reach 0.47 m, neap
tides 0.14 m. The water level is greatly influenced by the winds. During
strong NE winds the tidal range may sometimes exceed 1.0 m.
Currents: The coastal current running along the W coast of the Adriatic
maintains its SE direction until the Ancona promontory where it changes its
course flowing along the South mole, reaches the head of the North mole and
finally resumes its original course.
The current which crosses the harbour entrance from S to N striking the
extremity of the N Outer mole sets into the harbour. Steamers manoeuvring
between the Rizzo mole and the Clementino mole should pay heed to this. The
coastal current generally attains a rate of 4 knots. During strong winds
from W to N this rate may be considerable exceeded and cause great
disturbance to shipping.
Wind and Sea
The weather is generally good from May to September. During the autumn and
winter, bad weather comes mainly from the first quadrant. The NE wind, called
Bora, appears with little warning and blows with extreme violence, causing a
The Scirocco (SE wind) is, after the Bora, the most frequent wind blowing
during the winter months. It will, if continual, set up a considerable sea.
Westerly winds generally cause fog or mist which may be thick and frequent
especially in winter.