GEO Haiti 2010

State of the Environment Report 2010
Figure 11: Average monthly rainfall and
temperature from June to July
South and Southeast departments, rainfall can
exceed 400 mm of water (Figure 9). The average
monthly temperatures recorded for the period
remain high throughout the country (between 25
°C and 28 °C) and milder temperatures (between 12
°C and 22 °C) are found only in the higher regions,
as in the case of the Massif de la Hotte, Massif de la
Selle, Matheux Mountain Range and the Massif du
Nord.
December, January and February are the driest
months (Figure 10). In spite of this, rainfall still
occurs mainly in the Southern, Northwestern
and Northern departments including that
of Grand’Anse. During this period, the entire
country experiences the lowest average annual
temperatures (22 °C and 26 °C). In November,
rainfall remains at between 120 mm and 280 mm
of water in the North, at Grande Anse and in the
South. In February, the driest month of the year,
rainfall in rainy regions is between 0 and 160 mm
of water.
55
Temperatures for the period August to October
are similar to those of June to July (Figure 11).
However, variations have been observed in the
rainfall pattern: rainfall is between 20 mm and
120 mm in the coastal regions (Northwest, North
and Grand’Anse) while in the rest of the country it
varies between 120 and 240 mm.
Source: Prepared by CATHALAC with data from Wordclim (1961-1990).
The dry and rainy seasons are significantly distinct,
as in the case of Camp Perrin in the southern
part of the country (Figure 12). During the same
rainy and dry seasons, the other regions of Haiti
experience a situation similar 15 to that of the Cap-
Perrin zone, particularly in the Cul-de-Sac plain,
which is located to the north of Port-au-Prince.
15
Georges. 2008. Contribution à l’évaluation de l’érosion dans le BV de la rivière Grise, Plaine Cul-de-Sac