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Santo Antão, Portugal

Full City Profile

745 Population 58/sq mi density
1,086 ft Elevation 331 meters
63°F Avg Temperature 17°C
Santo Antão enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 58°F in January while summers reach 70°F in July. The area gets 248 sunny days per year. Annual precipitation totals 48.6 inches. The area receives 0.0 inches of snow annually.

Temperature

58°F Jan (14°C) 70°F Jul (21°C)
Annual Average63.4°F
17% above US avg
January Average58°F (14°C)
July Average70°F (21°C)
Sunny Days248 days/yr

Geography

Elevation1,086 ft (331 m)
Area12.9 sq mi (33.4 km²)
Population Density58/sq mi
Coordinates38.5500°N, 27.8000°W
TimezoneAtlantic/Azores

Precipitation & Snow

Annual Rainfall 48.6"
28% above US avg
Snowfall 0.0"
Wettest Month (Jan) 6.14"
Driest Month (Jul) 1.69"

Air Quality

Earthquake History

77 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.2. Most recent: M4.4 on Mar 25, 2025.

Jul 9, 1998 12 km N of Horta, Portugal M6.2 73 km
Jun 27, 1997 50 km SE of Porto Martins, Portugal M5.9 100 km
Jan 20, 1993 49 km W of Castelo Branco, Portugal M5.4 128 km
Jan 11, 2021 69 km NW of Castelo Branco, Portugal M5.4 141 km
Jun 27, 1997 51 km SE of Porto Judeu, Portugal M5.2 95 km
Jun 28, 1997 45 km SE of Porto Judeu, Portugal M5.1 90 km
Aug 1, 2000 39 km NW of Castelo Branco, Portugal M5.1 108 km
Jan 12, 1993 45 km WSW of Castelo Branco, Portugal M5.0 124 km
Mar 24, 1996 53 km SE of Porto Martins, Portugal M4.9 105 km
Aug 27, 1997 69 km SE of Porto Martins, Portugal M4.9 116 km
Jun 18, 1991 46 km NW of Mosteiros, Portugal M4.9 144 km
Apr 11, 2014 66 km WNW of Mosteiros, Portugal M4.9 122 km
Jan 28, 1993 46 km W of Castelo Branco, Portugal M4.9 126 km
Jan 14, 2024 4 km W of Fonte Bastardo, Portugal M4.9 60 km
Jun 14, 2015 37 km WNW of Castelo Branco, Portugal M4.8 115 km
Jun 28, 1997 49 km SSE of Porto Judeu, Portugal M4.8 91 km
Feb 23, 1998 80 km NW of Castelo Branco, Portugal M4.8 146 km
Feb 15, 1993 42 km W of Castelo Branco, Portugal M4.7 122 km
Apr 30, 2015 49 km WNW of Castelo Branco, Portugal M4.7 126 km
Feb 16, 1993 73 km NW of Castelo Branco, Portugal M4.7 138 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

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

Year Name Category Closest
2012 Gordon Category 1 262 km
2006 Gordon Category 1 107 km
1998 Ivan Category 1 239 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tsunami History

3 tsunamis recorded within 500 km. Highest wave on record: 9.0 m (30 ft).

Year Location Cause Max Wave Deaths Distance
1641 AZORES Unknown 9.0 m 31 km
1980 AZORES Earthquake 0.4 m 69 20 km
1757 AZORES Earthquake 1,053 27 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

5 volcanoes within 200 km. Closest: Terceira (46 km).

Name Type Elevation Last Eruption Distance
Terceira Stratovolcano(es) 1,023 m (3,356 ft) 2000 46 km
Pico Stratovolcano 2,351 m (7,713 ft) 1720 53 km
Graciosa Stratovolcano 402 m (1,319 ft) -1950 54 km
Fayal Stratovolcano 1,043 m (3,422 ft) 1958 81 km
Sete Cidades Stratovolcano 856 m (2,808 ft) 1880 192 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 58°F (14°C) 6.1 in Wettest
February 57°F (14°C) 4.8 in Coldest
March 58°F (14°C) 4.4 in
April 59°F (15°C) 3.4 in
May 62°F (17°C) 3.0 in
June 66°F (19°C) 2.1 in
July 70°F (21°C) 1.7 in Driest
August 72°F (22°C) 2.4 in Warmest
September 71°F (21°C) 4.0 in
October 66°F (19°C) 5.2 in
November 62°F (17°C) 5.6 in
December 60°F (15°C) 5.9 in

Santo Antão has a seasonal temperature swing of 15°F / from 57°F in February to 72°F in August. Total annual precipitation is 48.6 inches, with January being the wettest month (6.1") and July the driest (1.7").

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