Gros Morne, Haiti

Full City Profile

7,294 Population 43/sq mi density

719 ft Elevation 219 meters

76°F Avg Temperature 24°C

Gros Morne has a warm climate with an average annual temperature of 76°F (24°C). Winters average 73°F in January while summers reach 78°F in July. The area gets 232 sunny days per year. Annual precipitation totals 57.4 inches. The area receives 0.0 inches of snow annually.

Temperature

73°F Jan (23°C) 78°F Jul (26°C)

Annual Average	75.9°F
	41% above US avg
January Average	73°F (23°C)
July Average	78°F (26°C)
Sunny Days	232 days/yr

Geography

Elevation	719 ft (219 m)
Area	168.0 sq mi (435.1 km²)
Population Density	43/sq mi
Coordinates	19.6708°N, 72.6781°W
Timezone	America/Port-au-Prince

Precipitation & Snow

Annual Rainfall 57.4"

51% above US avg

Snowfall 0.0"

Wettest Month (May) 6.97"

Driest Month (Mar) 2.28"

Air Quality

Earthquake History

180 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.0. Most recent: M0.0 on Aug 5, 2025.

Jan 12, 2010	10 km SE of Léogâne, Haiti	M7.0	137 km
Jan 12, 2010	4 km SSW of Grangwav, Haiti	M6.0	143 km
Jan 20, 2010	4 km ESE of Tigwav, Haiti	M5.9	140 km
Jan 13, 2010	Haiti region	M5.8	147 km
Jan 12, 2010	Haiti region	M5.7	137 km
Jan 13, 2010	5 km SE of Tigwav, Haiti	M5.6	142 km
Jan 13, 2010	1 km SSE of Tigwav, Haiti	M5.6	140 km
Mar 2, 1994	0 km N of Fond Bassin Bleu, Haiti	M5.4	19 km
Feb 16, 2023	37 km WSW of Bombardopolis, Haiti	M5.4	106 km
Jan 13, 2010	4 km SSW of Tigwav, Haiti	M5.4	144 km
Jan 12, 2010	Haiti region	M5.3	142 km
Jan 13, 2010	8 km SSW of Grangwav, Haiti	M5.2	147 km
Jan 24, 2022	4 km E of Anse-à-Veau, Haiti	M5.1	146 km
Jan 13, 2010	4 km W of Grangwav, Haiti	M5.1	139 km
Jan 13, 2010	6 km W of Tigwav, Haiti	M5.1	139 km
Jan 13, 2010	10 km SSE of Tigwav, Haiti	M5.1	149 km
Jan 12, 2010	5 km S of Léogâne, Haiti	M5.0	134 km
Jan 13, 2010	7 km SE of Miragoâne, Haiti	M5.0	146 km
Jan 13, 2010	8 km SE of Gressier, Haiti	M5.0	134 km
Jan 13, 2010	6 km SSE of Tigwav, Haiti	M4.9	144 km

Source: USGS (M2.5+, 1990–2025)

Hurricane History

17 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 5.

Year	Name	Category	Closest
2024	Oscar	Category 1	147 km
2022	Fiona	Category 3	242 km
2020	Isaias	Category 1	92 km
2017	Irma	Category 5	183 km
2017	Maria	Category 3	284 km
2016	Matthew	Category 4	170 km
2011	Irene	Category 3	167 km
2010	Tomas	Category 1	103 km
2008	Ike	Category 4	148 km
2008	Hanna	Category 1	192 km
2008	Gustav	Category 1	175 km
1998	Georges	Category 2	64 km
1996	Hortense	Category 3	299 km
1988	Gilbert	Category 3	285 km
1987	Emily	Category 3	144 km
1985	Kate	Category 2	215 km
1980	Allen	Category 5	239 km

Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tsunami History

4 tsunamis recorded within 500 km. Highest wave on record: 5.0 m (16 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1842	CAP-HAITIAN	Earthquake	5.0 m	5,300	51 km
2010	HAITI & DOMINICAN REPUBLIC	Eruption + Earthquake	3.2 m	316,000	136 km
1860	ANSE-A-VEAU	Eruption + Earthquake	—	—	146 km
1770	PORT-AU-PRINCE	Eruption + Earthquake	—	200	136 km

Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	73°F (23°C)	2.6 in	Coldest
February	73°F (23°C)	2.3 in
March	75°F (24°C)	2.3 in	Driest
April	76°F (25°C)	3.8 in
May	77°F (25°C)	7.0 in	Wettest
June	78°F (25°C)	6.2 in
July	78°F (26°C)	4.7 in	Warmest
August	78°F (26°C)	5.2 in
September	78°F (25°C)	6.2 in
October	77°F (25°C)	7.0 in
November	75°F (24°C)	6.5 in
December	73°F (23°C)	3.7 in

Gros Morne has a seasonal temperature swing of 6°F / from 73°F in January to 78°F in July. Total annual precipitation is 57.5 inches, with May being the wettest month (7.0") and March the driest (2.3").

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