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Winter, spring, summer, and fall, all feel the same in Montego
Bay. The weather is almost always warm and humid. Temperatures stay around
80 degrees all year round. Most rain falls in the rainy season in the months
of September, October and November. The Trade Winds carry the cool, refreshing
breeze that sweeps over Montego Bay on a very hot, sunny day.
RAINFALL
The heat of the sun, like the fire under a kettle, turns water from the
various water bodies of the world into water vapour. This process is called
evaporation. If the temperature of air is lowered, the water vapour it
contains in the form of clouds will fall as rain. This process is called
condensation. Jamaica receives two kinds of rainfall: convectional and
relief. It does not receive monsoon rains because it is not a large land
mass.
HURRICANES
A hurricane is a storm revolving around a centre of low pressure which
contains almost no wind. As a hurricane develops, the winds from the area
of high pressure rush towards the low-pressure centre, and as their centrifugal
force intensifies, powerful gales of up to 200 kilometres (120 miles) per
hour are built up. The calm vortex in the centre, the 'eye' of the hurricane,
varies in diameter from thirty to a few hundred miles, and usually moves
westwards. Hurricanes are invariably accompanied by driving rains. On the
approach of a hurricane the barometer falls and the thermometer usually
rises.
The hurricane season is between July and October, though a hurricane
may occasionally arise in June or November. On September 12, 1988, Jamaica
suffered the worst hurricane in living memory when Hurricane Gilbert devastated
the island.
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