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Weather & Climate in Mexilhoeira Grande, Portugal
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mexilhoeira Grande enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 54°F in January while summers reach 72°F in July / relatively mild seasonal variation. The area gets 300 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 19.9 inches (drier than the 38-inch national average). The city sits at an elevation of 131 feet.
Temperature
54°F Jan (12°C)
72°F Jul (22°C)
| Annual Average | 62.6°F |
| 16% above US avg | |
| January Average | 54°F (12°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 300 days/yr |
Geography
| Elevation | 131 ft (40 m) |
| Area | 8.5 sq mi (22.1 km²) |
| Population Density | 473/sq mi |
| Coordinates | 37.1586°N, 8.6149°W |
| Timezone | Europe/Lisbon |
Precipitation & Snow
Air Quality
Earthquake History
414 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.6.
| Dec 17, 2009 | 104 km SW of Sagres, Portugal | M5.6 | 138 km | 20 km |
| Aug 26, 2024 | 56 km W of Sines, Portugal | M5.0 | 124 km | 7 km |
| Jan 3, 2005 | 45 km SSE of Fuzeta, Portugal | M4.7 | 108 km | 60 km |
| Jan 10, 2006 | 82 km SSE of Fuzeta, Portugal | M4.5 | 135 km | 3 km |
| Jul 5, 2000 | 64 km S of Faro, Portugal | M4.5 | 102 km | 10 km |
| Jun 22, 1993 | 71 km SSW of Faro, Portugal | M4.4 | 95 km | 32 km |
| Jan 11, 2008 | 87 km WSW of Sagres, Portugal | M4.4 | 121 km | 16 km |
| Mar 24, 2025 | 76 km S of Faro, Portugal | M4.4 | 113 km | 10 km |
| Sep 8, 2009 | 103 km S of Faro, Portugal | M4.3 | 134 km | 21 km |
| May 27, 2005 | 26 km SSW of Carvoeiro, Portugal | M4.3 | 32 km | 34 km |
| Sep 24, 1994 | 41 km SSE of Faro, Portugal | M4.3 | 90 km | 34 km |
| May 23, 2005 | Strait of Gibraltar | M4.3 | 111 km | 25 km |
| Nov 9, 1993 | 44 km SSE of Olhão, Portugal | M4.3 | 100 km | 29 km |
| Mar 2, 2016 | 93 km SSW of Faro, Portugal | M4.3 | 114 km | 10 km |
| Jan 1, 2022 | 80 km SSE of Olhão, Portugal | M4.3 | 126 km | 7 km |
| Jan 1, 2008 | 97 km SSE of Sagres, Portugal | M4.2 | 106 km | 45 km |
| Aug 18, 2009 | 113 km S of Faro, Portugal | M4.2 | 143 km | 10 km |
| Mar 31, 2010 | 95 km WSW of Sagres, Portugal | M4.2 | 129 km | 10 km |
| Nov 17, 1995 | 66 km SSW of Sagres, Portugal | M4.2 | 93 km | 20 km |
| Feb 16, 1993 | 49 km SSE of Senhora da Luz, Portugal | M4.2 | 56 km | 34 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
2 tsunamis 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 | 124 km |
| 881 | CADIZ | Earthquake | — | — | 140 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 54°F (12°C) | 2.9 in | Coldest |
| February | 55°F (13°C) | 2.4 in | |
| March | 57°F (14°C) | 1.8 in | |
| April | 59°F (15°C) | 1.7 in | |
| May | 63°F (17°C) | 0.9 in | |
| June | 68°F (20°C) | 0.4 in | |
| July | 72°F (22°C) | 0.0 in | Driest |
| August | 72°F (22°C) | 0.1 in | Warmest |
| September | 70°F (21°C) | 0.7 in | |
| October | 65°F (18°C) | 2.1 in | |
| November | 60°F (15°C) | 3.2 in | |
| December | 56°F (13°C) | 3.6 in | Wettest |
Mexilhoeira Grande has a seasonal temperature swing of 19°F / from 54°F in January to 72°F in August. Total annual precipitation is 19.9 inches, with December being the wettest month (3.6") and July the driest (0.0").