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Weather & Climate in Duncans, Jamaica
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Duncans has a warm climate with an average annual temperature of 76°F (25°C). Winters average 74°F in January while summers reach 78°F in July / relatively mild seasonal variation. The area gets 225 sunny days per year, above the national average. Annual precipitation totals 61.3 inches (wetter than the 38-inch national average). The city sits at an elevation of 427 feet.
Temperature
74°F Jan (23°C)
78°F Jul (26°C)
| Annual Average | 76.3°F |
| 41% above US avg | |
| January Average | 74°F (23°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 225 days/yr |
Geography
| Elevation | 427 ft (130 m) |
| Area | 295.1 sq mi (764.3 km²) |
| Population Density | 6/sq mi |
| Coordinates | 18.4680°N, 77.5363°W |
| Timezone | America/Jamaica |
Precipitation & Snow
Air Quality
Earthquake History
110 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.8.
| May 25, 1992 | 56 km SSW of Niquero, Cuba | M6.8 | 132 km | 23 km |
| Feb 4, 2007 | 108 km NNW of Lucea, Jamaica | M6.2 | 144 km | 10 km |
| Jan 13, 1993 | 3 km N of Easington, Jamaica | M5.5 | 116 km | 16 km |
| Aug 26, 1990 | 58 km SSW of Niquero, Cuba | M5.5 | 130 km | 10 km |
| Sep 15, 2011 | 65 km SW of Niquero, Cuba | M5.2 | 129 km | 10 km |
| Jun 13, 2005 | 8 km E of Ulster Spring, Jamaica | M5.2 | 20 km | 2 km |
| Jul 24, 2020 | 81 km SW of Niquero, Cuba | M5.1 | 127 km | 9 km |
| Mar 10, 2012 | 100 km NNE of Oracabessa, Jamaica | M4.8 | 140 km | 10 km |
| May 25, 1992 | 59 km SSW of Niquero, Cuba | M4.8 | 123 km | 33 km |
| May 16, 2011 | 15 km SSW of Black River, Jamaica | M4.7 | 74 km | 28 km |
| Sep 19, 2004 | 64 km SW of Niquero, Cuba | M4.7 | 133 km | 15 km |
| May 25, 1992 | 66 km SSW of Niquero, Cuba | M4.7 | 120 km | 33 km |
| Oct 9, 1996 | 90 km SW of Niquero, Cuba | M4.7 | 117 km | 33 km |
| Apr 15, 2023 | Saint Thomas, Jamaica | M4.6 | 126 km | 10 km |
| Jan 3, 2004 | 64 km SW of Niquero, Cuba | M4.6 | 130 km | 0 km |
| Nov 9, 2017 | 75 km SW of Niquero, Cuba | M4.5 | 132 km | 10 km |
| Aug 16, 2024 | 7 km NNE of Stony Hill, Jamaica | M4.5 | 90 km | 10 km |
| Aug 10, 2002 | 9 km N of Trinity Ville, Jamaica | M4.5 | 117 km | 33 km |
| May 25, 1992 | 61 km SSE of Niquero, Cuba | M4.4 | 116 km | 33 km |
| Sep 22, 2023 | 9 km S of Buff Bay, Jamaica | M4.4 | 100 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
19 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Melissa | Category 5 | 190 mph | 18 km |
| 2024 | Beryl | Category 4 | 144 mph | 108 km |
| 2024 | Rafael | Category 1 | 81 mph | 215 km |
| 2012 | Sandy | Category 3 | 115 mph | 111 km |
| 2010 | Tomas | Category 1 | 86 mph | 261 km |
| 2008 | Paloma | Category 4 | 144 mph | 234 km |
| 2008 | Ike | Category 4 | 132 mph | 294 km |
| 2008 | Gustav | Category 1 | 86 mph | 179 km |
| 2007 | Dean | Category 4 | 150 mph | 111 km |
| 2005 | Emily | Category 5 | 161 mph | 232 km |
| 2005 | Dennis | Category 4 | 150 mph | 110 km |
| 2004 | Ivan | Category 5 | 167 mph | 118 km |
| 2004 | Charley | Category 1 | 86 mph | 133 km |
| 2002 | Lili | Category 1 | 75 mph | 251 km |
| 2001 | Iris | Category 1 | 86 mph | 129 km |
| 1999 | Lenny | Category 1 | 81 mph | 297 km |
| 1998 | Georges | Category 1 | 75 mph | 298 km |
| 1988 | Gilbert | Category 4 | 132 mph | 42 km |
| 1980 | Allen | Category 4 | 144 mph | 72 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 2.5 m (8 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1907 | JAMAICA | Earthquake | 2.5 m | 1,000 | 139 km |
| 1692 | PORT ROYAL | Eruption + Earthquake | 1.8 m | 3,000 | 115 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 74°F (23°C) | 4.1 in | Coldest |
| February | 74°F (23°C) | 3.2 in | |
| March | 74°F (24°C) | 3.0 in | Driest |
| April | 76°F (24°C) | 4.4 in | |
| May | 77°F (25°C) | 6.4 in | |
| June | 78°F (25°C) | 5.6 in | |
| July | 78°F (26°C) | 3.7 in | |
| August | 79°F (26°C) | 5.0 in | Warmest |
| September | 78°F (26°C) | 6.3 in | |
| October | 77°F (25°C) | 8.7 in | Wettest |
| November | 76°F (25°C) | 6.2 in | |
| December | 75°F (24°C) | 4.7 in |
Duncans has a seasonal temperature swing of 5°F / from 74°F in January to 79°F in August. Total annual precipitation is 61.3 inches, with October being the wettest month (8.7") and March the driest (3.0").