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Weather & Climate in Gros Morne, Haiti
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
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 / relatively mild seasonal variation. The area gets 232 sunny days per year, above the national average. Annual precipitation totals 57.4 inches (wetter than the 38-inch national average). The city sits at an elevation of 719 feet.
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
Air Quality
Earthquake History
180 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.0.
| Jan 12, 2010 | 10 km SE of Léogâne, Haiti | M7.0 | 137 km | 13 km |
| Jan 12, 2010 | 4 km SSW of Grangwav, Haiti | M6.0 | 143 km | 10 km |
| Jan 20, 2010 | 4 km ESE of Tigwav, Haiti | M5.9 | 140 km | 11 km |
| Jan 13, 2010 | Haiti region | M5.8 | 147 km | 10 km |
| Jan 12, 2010 | Haiti region | M5.7 | 137 km | 10 km |
| Jan 13, 2010 | 5 km SE of Tigwav, Haiti | M5.6 | 142 km | 10 km |
| Jan 13, 2010 | 1 km SSE of Tigwav, Haiti | M5.6 | 140 km | 10 km |
| Mar 2, 1994 | 0 km N of Fond Bassin Bleu, Haiti | M5.4 | 19 km | 59 km |
| Feb 16, 2023 | 37 km WSW of Bombardopolis, Haiti | M5.4 | 106 km | 10 km |
| Jan 13, 2010 | 4 km SSW of Tigwav, Haiti | M5.4 | 144 km | 10 km |
| Jan 12, 2010 | Haiti region | M5.3 | 142 km | 10 km |
| Jan 13, 2010 | 8 km SSW of Grangwav, Haiti | M5.2 | 147 km | 10 km |
| Jan 24, 2022 | 4 km E of Anse-à-Veau, Haiti | M5.1 | 146 km | 10 km |
| Jan 13, 2010 | 4 km W of Grangwav, Haiti | M5.1 | 139 km | 10 km |
| Jan 13, 2010 | 6 km W of Tigwav, Haiti | M5.1 | 139 km | 10 km |
| Jan 13, 2010 | 10 km SSE of Tigwav, Haiti | M5.1 | 149 km | 10 km |
| Jan 12, 2010 | 5 km S of Léogâne, Haiti | M5.0 | 134 km | 10 km |
| Jan 13, 2010 | 7 km SE of Miragoâne, Haiti | M5.0 | 146 km | 10 km |
| Jan 13, 2010 | 8 km SE of Gressier, Haiti | M5.0 | 134 km | 10 km |
| Jan 13, 2010 | 6 km SSE of Tigwav, Haiti | M4.9 | 144 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
17 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Oscar | Category 1 | 86 mph | 147 km |
| 2022 | Fiona | Category 3 | 115 mph | 242 km |
| 2020 | Isaias | Category 1 | 81 mph | 92 km |
| 2017 | Irma | Category 5 | 167 mph | 183 km |
| 2017 | Maria | Category 3 | 127 mph | 284 km |
| 2016 | Matthew | Category 4 | 150 mph | 170 km |
| 2011 | Irene | Category 3 | 121 mph | 167 km |
| 2010 | Tomas | Category 1 | 86 mph | 103 km |
| 2008 | Ike | Category 4 | 132 mph | 148 km |
| 2008 | Hanna | Category 1 | 86 mph | 192 km |
| 2008 | Gustav | Category 1 | 92 mph | 175 km |
| 1998 | Georges | Category 2 | 81 mph | 64 km |
| 1996 | Hortense | Category 3 | 115 mph | 299 km |
| 1988 | Gilbert | Category 3 | 127 mph | 285 km |
| 1987 | Emily | Category 3 | 121 mph | 144 km |
| 1985 | Kate | Category 2 | 98 mph | 215 km |
| 1980 | Allen | Category 5 | 161 mph | 239 km |
Source: NOAA IBTrACS (Category 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.
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").