All Countries
Weather & Climate in São Brissos, Portugal
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
São Brissos enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 50°F in January while summers reach 75°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 686 feet.
Temperature
50°F Jan (10°C)
75°F Jul (24°C)
| Annual Average | 61.7°F |
| 14% above US avg | |
| January Average | 50°F (10°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 296 days/yr |
Geography
| Elevation | 686 ft (209 m) |
| Area | 26.4 sq mi (68.3 km²) |
| Population Density | 22/sq mi |
| Coordinates | 38.0720°N, 7.9465°W |
| Timezone | Europe/Lisbon |
Precipitation & Snow
Air Quality
Earthquake History
169 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 | 137 km | 7 km |
| Feb 17, 2025 | 1 km NE of Charneca de Caparica, Portugal | M4.8 | 125 km | 10 km |
| Jul 4, 1994 | 13 km ENE of El Cerro de Andévalo, Spain | M4.3 | 105 km | 10 km |
| May 27, 2005 | 26 km SSW of Carvoeiro, Portugal | M4.3 | 144 km | 34 km |
| Aug 17, 2017 | 5 km N of Arruda dos Vinhos, Portugal | M4.2 | 146 km | 10 km |
| Mar 27, 2010 | 13 km SE of Vale da Amoreira, Portugal | M4.1 | 104 km | 15 km |
| Jan 22, 2006 | 0 km SE of Feria, Spain | M4.1 | 131 km | 11 km |
| Jan 15, 2018 | 25 km NNW of Évora, Portugal | M4.1 | 80 km | 11 km |
| Jan 9, 2007 | 22 km SSW of Faro, Portugal | M4.0 | 137 km | 56 km |
| Mar 20, 2007 | 38 km S of Isla Cristina, Spain | M3.9 | 148 km | 47 km |
| Jul 31, 1998 | 23 km W of Estremoz, Portugal | M3.8 | 89 km | 5 km |
| Sep 20, 1999 | 0 km SW of Caxias, Portugal | M3.8 | 136 km | 10 km |
| Mar 26, 2011 | 6 km NNW of São Marcos da Serra, Portugal | M3.8 | 84 km | 8 km |
| Mar 28, 2002 | 43 km W of Sines, Portugal | M3.7 | 124 km | 10 km |
| Mar 30, 1995 | 5 km N of Cabeza la Vaca, Spain | M3.7 | 133 km | 10 km |
| Sep 4, 1997 | 24 km WNW of Sines, Portugal | M3.7 | 101 km | 10 km |
| Sep 11, 2017 | 5 km ESE of Lagos, Portugal | M3.6 | 125 km | 27 km |
| Mar 27, 2000 | 26 km S of La Antilla, Spain | M3.6 | 140 km | 10 km |
| May 28, 1995 | 15 km SSW of Faro, Portugal | M3.6 | 132 km | 10 km |
| Jan 19, 1997 | 9 km WNW of Redondo, Portugal | M3.6 | 73 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1531 | TAGUS RIVER, LISBON | Earthquake | — | 30,000 | 122 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 50°F (10°C) | 3.2 in | Coldest |
| February | 52°F (11°C) | 2.4 in | |
| March | 55°F (13°C) | 1.7 in | |
| April | 57°F (14°C) | 2.3 in | |
| May | 63°F (17°C) | 1.8 in | |
| June | 70°F (21°C) | 0.8 in | |
| July | 75°F (24°C) | 0.1 in | Warmest, Driest |
| August | 75°F (24°C) | 0.2 in | |
| September | 72°F (22°C) | 0.9 in | |
| October | 64°F (18°C) | 2.4 in | |
| November | 57°F (14°C) | 2.8 in | |
| December | 52°F (11°C) | 3.8 in | Wettest |
São Brissos has a seasonal temperature swing of 25°F / from 50°F in January to 75°F in July. Total annual precipitation is 22.3 inches, with December being the wettest month (3.8") and July the driest (0.1").