Guyana Climate and Weather
Guyana lies within
the equatorial trough zone and its weather and climate are influenced
primarily by the seasonal shifts of this trough and its associated
zone of rain bands called the Inter-Tropical Convergence Zone
(ITCZ).
 The
seasons are determined primarily by the variation in rainfall
patterns. Along the coast, there are two wet seasons from May
to July and from November to January and two dry seasons from
February to April and August to October. In the savannah region,
however, there is only one long wet season from the end of April
to the end of September, and one long dry season for the rest
of the year.
Rainfall ranges from over 3,000 mm in the forested region, to
about 1,600 mm in the savannah region, and averages about 2,300
mm along the coast. During the rainy season, sunshine averages
5 hours per day but, during the dry seasons, 7 hours or more can
be obtained.
 Temperature
ranges between 16°C and 34°C. Lower values can be experienced
at higher elevations. Along the coast, temperatures rarely rise
above 31°C or fall below 22°C, due to the stabilizing
effect of the ocean and the north-east trade winds.
Relative humidity is
high with 80 per cent or more along the coast, about 70 per cent
in savannah region and sometimes 100 per cent in the forested
region, especially in the mornings. Fog can be widespread and
persistent in the hinterland regions.
[Guyana lies south
of the path of Caribbean hurricanes.]
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