With a population of around 49,300, Grangwav sits in Ouest, Haiti. The city operates in the America/Port-au-Prince time zone.
In 2025, Grangwav recorded an average annual temperature of 82°F. The hottest temperatures reached 100°F in June; the coolest were 66°F in December. Total precipitation for the year was 23 inches, with the wettest month being October.
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