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Río San Juan, Dominican Republic

Full City Profile

8,983 Population 55/sq mi density
20 ft Elevation 6 meters
78°F Avg Temperature 25°C
Río San Juan has a warm climate with an average annual temperature of 78°F (26°C). Winters average 74°F in January while summers reach 80°F in July. The area gets 205 sunny days per year. Annual precipitation totals 72.3 inches. The area receives 0.0 inches of snow annually.

Temperature

74°F Jan (23°C) 80°F Jul (27°C)
Annual Average77.8°F
44% above US avg
January Average74°F (23°C)
July Average80°F (27°C)
Sunny Days205 days/yr

Geography

Elevation20 ft (6 m)
Area164.4 sq mi (425.8 km²)
Population Density55/sq mi
Coordinates19.6439°N, 70.0764°W
TimezoneAmerica/Santo_Domingo

Precipitation & Snow

Annual Rainfall 72.3"
90% above US avg
Snowfall 0.0"
Wettest Month (Nov) 10.24"
Driest Month (Feb) 3.78"

Air Quality

Earthquake History

593 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.4. Most recent: M3.8 on Aug 20, 2025.

Sep 22, 2003 2 km SE of Puerto Plata, Dominican Republic M6.4 64 km
Mar 26, 1991 10 km ESE of Cabarete, Dominican Republic M5.8 26 km
Sep 22, 2003 17 km N of Sosúa, Dominican Republic M5.6 54 km
Jul 12, 1994 3 km N of Guananico, Dominican Republic M5.6 90 km
Jan 5, 2012 5 km NNW of Baní, Dominican Republic M5.5 150 km
Oct 11, 1990 11 km ESE of El Puerto, Dominican Republic M5.3 126 km
Aug 19, 1993 11 km SSW of El Cacao, Dominican Republic M5.3 138 km
Aug 10, 1998 11 km NNW of San José de Ocoa, Dominican Republic M5.2 121 km
Jan 23, 2012 11 km S of Río San Juan, Dominican Republic M5.1 11 km
Apr 24, 1996 4 km N of Piedra Blanca, Dominican Republic M5.1 88 km
Jun 8, 2007 1 km S of Piedra Blanca, Dominican Republic M5.0 94 km
Jan 18, 1995 5 km NNW of Piedra Blanca, Dominican Republic M5.0 88 km
Jul 15, 2013 7 km E of San Francisco de Macorís, Dominican Republic M4.9 41 km
Oct 28, 2003 2 km SW of Puerto Plata, Dominican Republic M4.9 68 km
Oct 29, 2017 8 km SSE of San José de Ocoa, Dominican Republic M4.9 137 km
Mar 26, 1991 10 km NNE of Cabarete, Dominican Republic M4.8 37 km
Sep 22, 2003 Dominican Republic region M4.8 63 km
Oct 16, 2003 3 km S of Puerto Plata, Dominican Republic M4.8 66 km
Sep 22, 2003 5 km E of Guananico, Dominican Republic M4.8 84 km
May 18, 2023 Dominican Republic region M4.8 77 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

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

Year Name Category Closest
2025 Erin Category 4 289 km
2024 Oscar Category 1 203 km
2024 Ernesto Category 1 270 km
2022 Fiona Category 3 41 km
2020 Isaias Category 1 121 km
2017 Irma Category 5 103 km
2017 Maria Category 3 111 km
2011 Irene Category 3 64 km
2010 Earl Category 4 277 km
2008 Ike Category 4 175 km
2004 Frances Category 4 219 km
2004 Jeanne Category 1 147 km
2000 Debby Category 1 208 km
1998 Georges Category 3 106 km
1998 Bonnie Category 1 274 km
1996 Hortense Category 3 79 km
1996 Bertha Category 3 208 km
1987 Emily Category 3 166 km
1985 Kate Category 1 195 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
1946 NORTHEASTERN COAST Earthquake 5.0 m 1,790 121 km
1946 NORTHEASTERN COAST Earthquake 0.6 m 75 63 km
1989 PUERTO RICO Earthquake 0.1 m 150 km
1751 AZUA DE COMPOSTELA Earthquake 143 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 74°F (23°C) 5.4 in Coldest
February 75°F (24°C) 3.8 in Driest
March 76°F (24°C) 4.1 in
April 77°F (25°C) 5.7 in
May 79°F (26°C) 7.6 in
June 80°F (27°C) 4.3 in
July 80°F (27°C) 4.8 in Warmest
August 80°F (27°C) 6.3 in
September 80°F (27°C) 5.0 in
October 80°F (27°C) 6.4 in
November 77°F (25°C) 10.2 in Wettest
December 75°F (24°C) 8.7 in

Río San Juan has a seasonal temperature swing of 6°F / from 74°F in January to 80°F in July. Total annual precipitation is 72.3 inches, with November being the wettest month (10.2") and February the driest (3.8").

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