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Weather & Climate in Olhão, Portugal
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Olhão enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 52°F in January while summers reach 75°F in July. The area gets 297 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 21.5 inches (drier than the 38-inch national average). The city sits at an elevation of 36 feet.
Temperature
52°F Jan (11°C)
75°F Jul (24°C)
| Annual Average | 62.8°F |
| 16% above US avg | |
| January Average | 52°F (11°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 297 days/yr |
Geography
| Elevation | 36 ft (11 m) |
| Area | 6.0 sq mi (15.6 km²) |
| Population Density | 4,841/sq mi |
| Coordinates | 37.0286°N, 7.8411°W |
| Timezone | Europe/Lisbon |
Precipitation & Snow
Air Quality
Earthquake History
378 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 | 47 km | 60 km |
| Jan 10, 2006 | 82 km SSE of Fuzeta, Portugal | M4.5 | 82 km | 3 km |
| Jul 5, 2000 | 64 km S of Faro, Portugal | M4.5 | 66 km | 10 km |
| Apr 8, 2006 | 36 km S of Mazagón, Spain | M4.4 | 88 km | 42 km |
| Mar 24, 2025 | 76 km S of Faro, Portugal | M4.4 | 78 km | 10 km |
| Jun 22, 1993 | 71 km SSW of Faro, Portugal | M4.4 | 75 km | 32 km |
| Jan 1, 2022 | 80 km SSE of Olhão, Portugal | M4.3 | 80 km | 7 km |
| Sep 8, 2009 | 103 km S of Faro, Portugal | M4.3 | 105 km | 21 km |
| Jul 4, 1994 | 13 km ENE of El Cerro de Andévalo, Spain | M4.3 | 125 km | 10 km |
| Mar 2, 2016 | 93 km SSW of Faro, Portugal | M4.3 | 96 km | 10 km |
| May 23, 2005 | Strait of Gibraltar | M4.3 | 62 km | 25 km |
| May 27, 2005 | 26 km SSW of Carvoeiro, Portugal | M4.3 | 67 km | 34 km |
| Nov 9, 1993 | 44 km SSE of Olhão, Portugal | M4.3 | 44 km | 29 km |
| Sep 24, 1994 | 41 km SSE of Faro, Portugal | M4.3 | 42 km | 34 km |
| Nov 17, 1995 | 66 km SSW of Sagres, Portugal | M4.2 | 133 km | 20 km |
| Aug 18, 2009 | 113 km S of Faro, Portugal | M4.2 | 116 km | 10 km |
| Feb 16, 1993 | 49 km SSE of Senhora da Luz, Portugal | M4.2 | 77 km | 34 km |
| Mar 14, 2004 | 84 km S of Carvoeiro, Portugal | M4.2 | 93 km | 11 km |
| Jan 1, 2008 | 97 km SSE of Sagres, Portugal | M4.2 | 109 km | 45 km |
| Feb 11, 2022 | 71 km S of Sagres, Portugal | M4.1 | 118 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 0.1 m (0 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1978 | CADIZ | Earthquake | 0.1 m | — | 106 km |
| 881 | CADIZ | Earthquake | — | — | 115 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 52°F (11°C) | 3.2 in | Coldest |
| February | 54°F (12°C) | 2.4 in | |
| March | 56°F (14°C) | 1.7 in | |
| April | 59°F (15°C) | 1.9 in | |
| May | 64°F (18°C) | 1.1 in | |
| June | 70°F (21°C) | 0.4 in | |
| July | 75°F (24°C) | 0.1 in | Warmest, Driest |
| August | 75°F (24°C) | 0.2 in | |
| September | 71°F (22°C) | 0.7 in | |
| October | 65°F (18°C) | 2.4 in | |
| November | 59°F (15°C) | 3.1 in | |
| December | 54°F (12°C) | 4.4 in | Wettest |
Olhão has a seasonal temperature swing of 23°F / from 52°F in January to 75°F in July. Total annual precipitation is 21.5 inches, with December being the wettest month (4.4") and July the driest (0.1").