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Weather & Climate in Mértola, Portugal
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mértola enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 51°F in January while summers reach 77°F in July. The area gets 298 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 20.7 inches (drier than the 38-inch national average). The city sits at an elevation of 187 feet.
Temperature
51°F Jan (11°C)
77°F Jul (25°C)
| Annual Average | 63.0°F |
| 17% above US avg | |
| January Average | 51°F (11°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 298 days/yr |
Geography
| Elevation | 187 ft (57 m) |
| Area | 122.3 sq mi (316.7 km²) |
| Population Density | 59/sq mi |
| Coordinates | 37.6430°N, 7.6611°W |
| Timezone | Europe/Lisbon |
Precipitation & Snow
Air Quality
Earthquake History
337 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| 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 | 145 km | 3 km |
| Jul 5, 2000 | 64 km S of Faro, Portugal | M4.5 | 136 km | 10 km |
| Apr 8, 2006 | 36 km S of Mazagón, Spain | M4.4 | 115 km | 42 km |
| Jun 22, 1993 | 71 km SSW of Faro, Portugal | M4.4 | 144 km | 32 km |
| Mar 24, 2025 | 76 km S of Faro, Portugal | M4.4 | 148 km | 10 km |
| May 23, 2005 | Strait of Gibraltar | M4.3 | 128 km | 25 km |
| Jan 1, 2022 | 80 km SSE of Olhão, Portugal | M4.3 | 147 km | 7 km |
| Sep 24, 1994 | 41 km SSE of Faro, Portugal | M4.3 | 111 km | 34 km |
| Jul 4, 1994 | 13 km ENE of El Cerro de Andévalo, Spain | M4.3 | 77 km | 10 km |
| May 27, 2005 | 26 km SSW of Carvoeiro, Portugal | M4.3 | 117 km | 34 km |
| Nov 9, 1993 | 44 km SSE of Olhão, Portugal | M4.3 | 111 km | 29 km |
| Feb 16, 1993 | 49 km SSE of Senhora da Luz, Portugal | M4.2 | 136 km | 34 km |
| Mar 27, 2010 | 13 km SE of Vale da Amoreira, Portugal | M4.1 | 148 km | 15 km |
| Jan 22, 2006 | 0 km SE of Feria, Spain | M4.1 | 136 km | 11 km |
| Jan 15, 2018 | 25 km NNW of Évora, Portugal | M4.1 | 130 km | 11 km |
| Sep 9, 1994 | Strait of Gibraltar | M4.1 | 104 km | 33 km |
| Aug 10, 2004 | 45 km SSW of Punta Umbría, Spain | M4.0 | 106 km | 58 km |
| Aug 3, 2004 | 69 km S of Faro, Portugal | M4.0 | 139 km | 0 km |
| Jan 9, 2007 | 22 km SSW of Faro, Portugal | M4.0 | 96 km | 56 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 51°F (11°C) | 3.0 in | Coldest |
| February | 53°F (12°C) | 2.2 in | |
| March | 56°F (13°C) | 1.6 in | |
| April | 59°F (15°C) | 2.0 in | |
| May | 64°F (18°C) | 1.4 in | |
| June | 71°F (22°C) | 0.6 in | |
| July | 77°F (25°C) | 0.1 in | Warmest, Driest |
| August | 77°F (25°C) | 0.2 in | |
| September | 73°F (23°C) | 0.8 in | |
| October | 65°F (18°C) | 2.3 in | |
| November | 58°F (14°C) | 2.9 in | |
| December | 53°F (12°C) | 3.8 in | Wettest |
Mértola has a seasonal temperature swing of 26°F / from 51°F in January to 77°F in July. Total annual precipitation is 20.7 inches, with December being the wettest month (3.8") and July the driest (0.1").