MONSOONS 
Currents and swell at the western entrance to
Colombo harbour vary with the monsoons. 
During the SW monsoon visibility is often
poor and a disturbed swell, combined with
an E set, may be experienced across the harbour
entrances. During the NE monsoon a current, 
setting N along the coast with a rate of up to 1.5kn,
May be experienced off the harbour; this result in
an E set across the harbour entrances. The effects
of these monsoons may be unpredictable, following
the construction of South Harbour 
(06 57.30N 79 50.00E)