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Weather & Climate in São Marcos da Serra, Portugal
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
São Marcos da Serra enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 51°F in January while summers reach 72°F in July. The area gets 296 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 22.3 inches (drier than the 38-inch national average). The city sits at an elevation of 377 feet.
Temperature
51°F Jan (11°C)
72°F Jul (22°C)
| Annual Average | 61.2°F |
| 13% above US avg | |
| January Average | 51°F (11°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 296 days/yr |
Geography
| Elevation | 377 ft (115 m) |
| Area | 59.8 sq mi (154.9 km²) |
| Population Density | 23/sq mi |
| Coordinates | 37.3610°N, 8.3776°W |
| Timezone | Europe/Lisbon |
Precipitation & Snow
Air Quality
Earthquake History
404 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.0.
| Aug 26, 2024 | 56 km W of Sines, Portugal | M5.0 | 123 km | 7 km |
| Jan 3, 2005 | 45 km SSE of Fuzeta, Portugal | M4.7 | 105 km | 60 km |
| Jan 10, 2006 | 82 km SSE of Fuzeta, Portugal | M4.5 | 138 km | 3 km |
| Jul 5, 2000 | 64 km S of Faro, Portugal | M4.5 | 111 km | 10 km |
| Apr 8, 2006 | 36 km S of Mazagón, Spain | M4.4 | 145 km | 42 km |
| Jun 22, 1993 | 71 km SSW of Faro, Portugal | M4.4 | 109 km | 32 km |
| Mar 24, 2025 | 76 km S of Faro, Portugal | M4.4 | 123 km | 10 km |
| Sep 8, 2009 | 103 km S of Faro, Portugal | M4.3 | 147 km | 21 km |
| May 23, 2005 | Strait of Gibraltar | M4.3 | 115 km | 25 km |
| May 27, 2005 | 26 km SSW of Carvoeiro, Portugal | M4.3 | 57 km | 34 km |
| Nov 9, 1993 | 44 km SSE of Olhão, Portugal | M4.3 | 100 km | 29 km |
| Jan 1, 2022 | 80 km SSE of Olhão, Portugal | M4.3 | 132 km | 7 km |
| Sep 24, 1994 | 41 km SSE of Faro, Portugal | M4.3 | 93 km | 34 km |
| Mar 2, 2016 | 93 km SSW of Faro, Portugal | M4.3 | 130 km | 10 km |
| Jul 4, 1994 | 13 km ENE of El Cerro de Andévalo, Spain | M4.3 | 147 km | 10 km |
| Nov 17, 1995 | 66 km SSW of Sagres, Portugal | M4.2 | 123 km | 20 km |
| Jan 1, 2008 | 97 km SSE of Sagres, Portugal | M4.2 | 129 km | 45 km |
| Feb 16, 1993 | 49 km SSE of Senhora da Luz, Portugal | M4.2 | 80 km | 34 km |
| Mar 14, 2004 | 84 km S of Carvoeiro, Portugal | M4.2 | 114 km | 11 km |
| Feb 23, 2005 | 91 km S of Olhão, Portugal | M4.1 | 141 km | 36 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 18.3 m (60 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1755 | LISBON | Earthquake | 18.3 m | 50,000 | 149 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 51°F (11°C) | 3.2 in | Coldest |
| February | 52°F (11°C) | 2.6 in | |
| March | 56°F (13°C) | 1.9 in | |
| April | 58°F (14°C) | 2.1 in | |
| May | 62°F (17°C) | 1.3 in | |
| June | 68°F (20°C) | 0.6 in | |
| July | 72°F (22°C) | 0.1 in | Driest |
| August | 73°F (23°C) | 0.2 in | Warmest |
| September | 70°F (21°C) | 0.8 in | |
| October | 64°F (18°C) | 2.4 in | |
| November | 57°F (14°C) | 3.3 in | |
| December | 53°F (12°C) | 4.0 in | Wettest |
São Marcos da Serra has a seasonal temperature swing of 21°F / from 51°F in January to 73°F in August. Total annual precipitation is 22.3 inches, with December being the wettest month (4.0") and July the driest (0.1").