Belize is driest in the North East and wettest in the
The climate of Belize City. Average temperature is
about 27C (F) in summer from May to September then drops about 4C (F) to 23C (F) over winter. The
amount of rainfall varies considerably from a wet season from May until January, to a three month
dry season with only 25% of the rainfall per month as during the wet.
The variation in monthly rainfall from season to
season, both during the summer and the winter, can be very high and more than 5x rainfall in some
years compared to others, due to intermittent cool depressions form the north, tropical waves and
storms, and hurricanes.
The graph from Shipstern Nature Reserve, Sarteneja,
north western Belize, shows the very high variation in monthly rainfall from one year to another,
and between the wet and the dry season. Average rainfalls are about 3 times higher in the South
with a shorter dry season.
A guide to the general climate of Belize may be found at
This climate chart was taken from http://www.belize.climatetemp.info/ for lats, longs, 17 Degrees 31 Minutes N, 88 Degrees 11 Minutes
Sarteneja is located at Lat (DMS), 18° 21' 0 N, Long (DMS), 88° 7' 60 W, and therefore is more
coastal and northerly than the location of the chart below.
The area in and around Sartenaja is the driest in Belize, with less than 1500mm of
rain per annum. Soils are shallow and alkaline, and lie over limestone bedrock from former
reefs. Above ground, freshwater is scarce.
The graph below shows the rainfall over Shipstern Nature Reserve
over the short period of 1989 and 1993. From http://www.shipstern.org/CMS/default.asp?ID=144&Language=EN
The rainfall at Sarteneja is probably slightly less than further
inland at Shipstern NR, as rainfall generally increases inland in this region.
From the graphs below the climate of the Sarteneja Region is
generally warm and wet from November to January, warm and dry from February to April, hot and dry
from May to June, then a hot wet season from June to October.
However, rainfall is highly stochastic (statistically
unpredictable) with up to 3x variation between years in many months.