San Lorenzo, Puerto Rico

Full City Profile

9,373 Population 156/sq mi density

302 ft Elevation 92 meters

78°F Avg Temperature 26°C

San Lorenzo has a warm climate with an average annual temperature of 78°F (26°C). Winters average 74°F in January while summers reach 81°F in July. The area gets 351 sunny days per year. Annual precipitation totals 50.0 inches. The area receives 0.0 inches of snow annually.

Temperature

74°F Jan (24°C) 81°F Jul (27°C)

Annual Average	78.3°F
	45% above US avg
January Average	74°F (24°C)
July Average	81°F (27°C)
Sunny Days	351 days/yr

Geography

Elevation	302 ft (92 m)
Area	60.0 sq mi (155.3 km²)
Population Density	156/sq mi
Coordinates	18.1894°N, 65.9610°W
Timezone	America/Puerto_Rico

Precipitation & Snow

Annual Rainfall 50.0"

32% above US avg

Snowfall 0.0"

Wettest Month (Oct) 9.37"

Driest Month (Feb) 3.19"

Air Quality

Earthquake History

20,326 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.4. Most recent: M0.0 on Aug 30, 2025.

Jan 7, 2020	4 km SSE of Indios, Puerto Rico	M6.4	94 km
Jan 13, 2014	61 km N of Hatillo, Puerto Rico	M6.4	130 km
Jan 11, 2020	5 km SE of Maria Antonia, Puerto Rico	M5.9	98 km
May 16, 2010	4 km E of Moca, Puerto Rico	M5.8	119 km
Jan 6, 2020	14 km S of Indios, Puerto Rico	M5.8	98 km
Jan 7, 2020	11 km S of Tallaboa, Puerto Rico	M5.6	87 km
Jan 7, 2020	0 km NW of Magas Arriba, Puerto Rico	M5.6	88 km
Feb 4, 2008	Puerto Rico region	M5.5	136 km
May 2, 2020	6 km S of Tallaboa, Puerto Rico	M5.4	86 km
Aug 1, 1993	68 km SSE of Emajagua, Puerto Rico	M5.3	92 km
Nov 23, 1992	28 km NNW of San Antonio, Puerto Rico	M5.3	141 km
Jul 3, 2020	9 km SSE of La Parguera, Puerto Rico	M5.3	115 km
Jan 10, 2020	4 km S of Maria Antonia, Puerto Rico	M5.2	102 km
Jan 15, 2020	Puerto Rico region	M5.2	116 km
Jan 11, 2020	19 km S of Indios, Puerto Rico	M5.2	97 km
Aug 14, 2009	92 km N of Suárez, Puerto Rico	M5.1	121 km
Mar 12, 2009	66 km N of Brenas, Puerto Rico	M5.1	107 km
Jan 25, 2020	1 km N of Indios, Puerto Rico	M5.0	93 km
Feb 4, 2020	15 km SSE of Guánica, Puerto Rico	M5.0	104 km
Jan 7, 2020	14 km S of Tallaboa, Puerto Rico	M5.0	86 km

Source: USGS (M2.5+, 1990–2025)

Hurricane History

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

Year	Name	Category	Closest
2025	Erin	Category 5	227 km
2024	Ernesto	Category 1	231 km
2023	Tammy	Category 1	298 km
2022	Fiona	Category 1	105 km
2019	Dorian	Category 1	93 km
2017	Maria	Category 5	22 km
2017	Irma	Category 5	99 km
2014	Gonzalo	Category 3	220 km
2011	Irene	Category 1	7 km
2010	Earl	Category 4	172 km
2008	Omar	Category 4	169 km
2004	Frances	Category 4	247 km
2004	Jeanne	Category 1	220 km
2000	Debby	Category 1	90 km
1999	Lenny	Category 4	151 km
1999	Jose	Category 1	229 km
1998	Georges	Category 3	20 km
1996	Bertha	Category 3	102 km
1996	Hortense	Category 1	87 km
1995	Luis	Category 4	221 km

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

Tsunami History

5 tsunamis recorded within 500 km. Highest wave on record: 15.2 m (50 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1867	VIRGIN ISLANDS	Earthquake	15.2 m	24	102 km
1918	PUERTO RICO: MONA PASSAGE	Eruption + Earthquake	6.1 m	144	141 km
1868	VIRGIN ISLANDS	Earthquake	1.5 m	—	92 km
2020	PUERTO RICO	Earthquake	0.1 m	4	94 km
1918	PUERTO RICO	Earthquake	—	—	135 km

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

Wildfire History

6 wildfires (100+ acres) within 100 km. Largest: CAMPAMENTO SANTIAGO (3,927 ac, 2005).

Year	Name	Acres	Distance
2005	CAMPAMENTO SANTIAGO	3,927	37 km
2007	UNNAMED	3,896	38 km
2005	UNNAMED	1,888	33 km
2005	PISTA DE SALINAS CARR 3	1,137	42 km
2005	UNNAMED	725	31 km
2013	PUERTO NEGRO	631	65 km

Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	74°F (24°C)	4.5 in
February	73°F (23°C)	3.2 in	Coldest, Driest
March	74°F (23°C)	3.6 in
April	75°F (24°C)	5.4 in
May	77°F (25°C)	8.7 in
June	79°F (26°C)	6.6 in
July	81°F (27°C)	7.2 in	Warmest
August	79°F (26°C)	8.9 in
September	79°F (26°C)	8.8 in
October	78°F (26°C)	9.4 in	Wettest
November	76°F (25°C)	7.9 in
December	74°F (23°C)	6.1 in

San Lorenzo has a seasonal temperature swing of 8°F / from 73°F in February to 81°F in July. Total annual precipitation is 80.3 inches, with October being the wettest month (9.4") and February the driest (3.2").

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