Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Añasco zona urbana has a warm climate with an average annual temperature of 78°F (26°C). Winters average 74°F in January while summers reach 82°F in July / relatively mild seasonal variation. The area gets 356 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 42.2 inches. Air quality is rated Good with a median AQI of 21 / among the cleanest air in the country. The city sits at an elevation of 34 feet.
Temperature
74°F Jan (23°C)82°F Jul (28°C)
Annual Average
78.3°F
45% above US avg
January Average
74°F (23°C)
July Average
82°F (28°C)
Sunny Days
356 days/yr
Geography
Elevation
34 ft (10 m)
Area
0.8 sq mi (2.1 km²)
Population Density
5,753/sq mi
Coordinates
18.2855°N, 67.1401°W
Timezone
America/Puerto_Rico
County
Añasco Municipio County
Nearest Airport
Luis Munoz Marin International (SJU) 75 miles away
Precipitation & Snow
Annual Rainfall42.2"
11% above US avg
Snowfall0.0"
Wettest Month (Sep)9.65"
Driest Month (Jan)2.13"
Air Quality
AQI Median
21.0
Rating
Good
Earthquake History
21,832 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M6.4.
Jan 13, 2014
61 km N of Hatillo, Puerto Rico
M6.4
91 km
20 km
Jan 7, 2020
4 km SSE of Indios, Puerto Rico
M6.4
50 km
6 km
Sep 24, 2019
67 km NNW of San Antonio, Puerto Rico
M6.0
89 km
10 km
Jan 11, 2020
5 km SE of Maria Antonia, Puerto Rico
M5.9
48 km
5 km
May 28, 2014
45 km SE of Boca de Yuma, Dominican Republic
M5.8
131 km
90 km
May 16, 2010
4 km E of Moca, Puerto Rico
M5.8
15 km
113 km
Jan 6, 2020
14 km S of Indios, Puerto Rico
M5.8
58 km
6 km
Aug 5, 2025
38 km SE of Boca de Yuma, Dominican Republic
M5.7
126 km
168 km
Jun 24, 2025
77 km NNE of Punta Cana, Dominican Republic
M5.7
146 km
68 km
Jan 7, 2020
0 km NW of Magas Arriba, Puerto Rico
M5.6
48 km
9 km
May 15, 2024
92 km NNW of San Antonio, Puerto Rico
M5.6
113 km
7 km
Jan 7, 2020
11 km S of Tallaboa, Puerto Rico
M5.6
62 km
10 km
Feb 4, 2008
Puerto Rico region
M5.5
86 km
15 km
Dec 11, 2000
65 km N of Isabela, Puerto Rico
M5.5
90 km
53 km
May 2, 2020
6 km S of Tallaboa, Puerto Rico
M5.4
58 km
9 km
Nov 23, 1992
28 km NNW of San Antonio, Puerto Rico
M5.3
51 km
31 km
Jul 3, 2020
9 km SSE of La Parguera, Puerto Rico
M5.3
45 km
3 km
Jan 11, 2020
19 km S of Indios, Puerto Rico
M5.2
63 km
10 km
Jan 10, 2020
4 km S of Maria Antonia, Puerto Rico
M5.2
48 km
9 km
Jan 15, 2020
Puerto Rico region
M5.2
43 km
5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
22 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 5.
Year
Name
Category
Max Wind
Closest
2025
Erin
Category 4
144 mph
258 km
2024
Ernesto
Category 1
75 mph
180 km
2022
Fiona
Category 2
98 mph
32 km
2021
Elsa
Category 1
75 mph
299 km
2019
Dorian
Category 1
86 mph
183 km
2017
Maria
Category 5
173 mph
38 km
2017
Irma
Category 5
178 mph
137 km
2011
Irene
Category 1
92 mph
70 km
2010
Earl
Category 4
132 mph
222 km
2008
Omar
Category 3
109 mph
271 km
2004
Frances
Category 4
144 mph
269 km
2004
Jeanne
Category 1
81 mph
97 km
2000
Debby
Category 1
75 mph
112 km
1999
Lenny
Category 4
155 mph
220 km
1998
Georges
Category 3
121 mph
33 km
1996
Bertha
Category 3
115 mph
165 km
1996
Hortense
Category 2
86 mph
29 km
1995
Marilyn
Category 3
115 mph
157 km
1989
Hugo
Category 4
138 mph
120 km
1988
Gilbert
Category 2
109 mph
245 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
22 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF1.
Date
Rating
Distance
Path
Fatalities
Jul 16, 2023
EF1
11 km
1.5 mi
0
May 1, 2022
EF1
46 km
0.4 mi
0
Jun 7, 1962
EF1
11 km
0.1 mi
0
Aug 9, 2023
EF0
19 km
0.3 mi
0
Jul 27, 2019
EF0
30 km
0.5 mi
0
Nov 18, 2016
EF0
71 km
0.6 mi
0
Oct 1, 2013
EF0
7 km
0.3 mi
0
Sep 13, 2012
EF0
28 km
0.0 mi
0
Aug 7, 2011
EF0
11 km
0.8 mi
0
Aug 25, 2009
EF0
24 km
0.0 mi
0
Aug 6, 2007
EF0
3 km
1.3 mi
0
Jun 15, 2006
EF0
5 km
0.5 mi
0
Jun 22, 2005
EF0
21 km
0.5 mi
0
Oct 16, 2004
EF0
5 km
0.1 mi
0
Oct 4, 2002
EF0
5 km
0.5 mi
0
Jun 3, 2001
EF0
5 km
0.5 mi
0
Aug 25, 2000
EF0
93 km
1.0 mi
0
Sep 6, 1999
EF0
9 km
0.2 mi
0
Jul 20, 1999
EF0
9 km
0.5 mi
0
Jun 28, 1972
EF0
17 km
0.1 mi
0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
3 tsunamis recorded within 500 km.
Highest wave on record: 6.1 m (20 ft).
Year
Location
Cause
Max Wave
Deaths
Distance
1918
PUERTO RICO: MONA PASSAGE
Eruption + Earthquake
6.1 m
144
46 km
2020
PUERTO RICO
Earthquake
0.1 m
4
50 km
1918
PUERTO RICO
Earthquake
—
—
19 km
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
4 wildfires (100+ acres) recorded within 100 km.
Largest: CAMPAMENTO SANTIAGO (3,927 acres, 2005).
Year
Name
Acres Burned
Distance
2005
CAMPAMENTO SANTIAGO
3,927
97 km
2007
UNNAMED
3,896
96 km
2005
PISTA DE SALINAS CARR 3
1,137
93 km
2007
CARR 304
606
35 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
74°F (23°C)
2.1 in
Driest
February
73°F (23°C)
2.4 in
Coldest
March
74°F (23°C)
3.3 in
April
76°F (24°C)
4.8 in
May
77°F (25°C)
8.5 in
June
79°F (26°C)
6.4 in
July
82°F (28°C)
6.9 in
Warmest
August
79°F (26°C)
8.7 in
September
79°F (26°C)
9.7 in
Wettest
October
78°F (26°C)
9.2 in
November
77°F (25°C)
5.6 in
December
74°F (23°C)
2.6 in
Añasco zona urbana has a seasonal temperature swing of 8°F / from 73°F in February to 82°F in July. Total annual precipitation is 70.2 inches, with September being the wettest month (9.7") and January the driest (2.1").