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Weather & Climate in Arcos, Portugal
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Arcos enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 49°F in January while summers reach 69°F in July. The area gets 261 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 41.2 inches. The city sits at an elevation of 115 feet.
Temperature
49°F Jan (9°C)
69°F Jul (21°C)
| Annual Average | 59.3°F |
| 10% above US avg | |
| January Average | 49°F (9°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 261 days/yr |
Geography
| Elevation | 115 ft (35 m) |
| Area | 5.7 sq mi (14.8 km²) |
| Population Density | 1,180/sq mi |
| Coordinates | 40.4478°N, 8.4417°W |
| Timezone | Europe/Lisbon |
Precipitation & Snow
Air Quality
Earthquake History
67 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.
| Mar 7, 1997 | 66 km NW of Peniche, Portugal | M3.9 | 143 km | 10 km |
| Apr 3, 1995 | 4 km E of Tocha, Portugal | M3.9 | 26 km | 5 km |
| Aug 20, 1998 | 13 km SSE of Mêda, Portugal | M3.8 | 113 km | 11 km |
| Apr 10, 2001 | 6 km SSE of Louriçal, Portugal | M3.7 | 60 km | 10 km |
| Nov 24, 1993 | Portugal | M3.6 | 99 km | 10 km |
| Aug 11, 1993 | 3 km SSW of Vilela, Portugal | M3.6 | 108 km | 10 km |
| Feb 1, 2017 | 4 km WSW of Porto de Mós, Portugal | M3.6 | 102 km | 11 km |
| Jan 21, 2002 | 21 km E of Sobreira, Portugal | M3.6 | 140 km | 7 km |
| Apr 30, 1999 | 7 km WNW of Marinha Grande, Portugal | M3.6 | 90 km | 10 km |
| Aug 18, 1998 | 11 km SSE of Mêda, Portugal | M3.5 | 113 km | 8 km |
| Jun 22, 1993 | 18 km W of Espinho, Portugal | M3.5 | 69 km | 10 km |
| Jun 20, 1991 | 3 km SE of Tavarede, Portugal | M3.5 | 46 km | 20 km |
| Dec 31, 1996 | 4 km N of Luso, Portugal | M3.5 | 6 km | 10 km |
| May 10, 1990 | 69 km W of Gafanha da Encarnação, Portugal | M3.5 | 98 km | 10 km |
| Oct 20, 1994 | 3 km SSE of Peso da Régua, Portugal | M3.4 | 94 km | 10 km |
| Apr 15, 2006 | 3 km N of Bombarral, Portugal | M3.4 | 142 km | 10 km |
| Nov 10, 1997 | 29 km WSW of Buarcos, Portugal | M3.4 | 76 km | 10 km |
| Oct 30, 2001 | 19 km E of Sobreira, Portugal | M3.4 | 140 km | 12 km |
| Oct 7, 1993 | 8 km NNW of Campo de Besteiros, Portugal | M3.4 | 31 km | 10 km |
| May 2, 2015 | 1 km WSW of Arcos, Portugal | M3.3 | 119 km | 21 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 49°F (9°C) | 6.0 in | Coldest, Wettest |
| February | 51°F (10°C) | 5.0 in | |
| March | 54°F (12°C) | 3.7 in | |
| April | 57°F (14°C) | 3.4 in | |
| May | 61°F (16°C) | 3.3 in | |
| June | 66°F (19°C) | 1.9 in | |
| July | 69°F (21°C) | 0.6 in | Driest |
| August | 70°F (21°C) | 0.6 in | Warmest |
| September | 68°F (20°C) | 1.9 in | |
| October | 62°F (16°C) | 4.3 in | |
| November | 55°F (13°C) | 4.8 in | |
| December | 51°F (10°C) | 5.7 in |
Arcos has a seasonal temperature swing of 21°F / from 49°F in January to 70°F in August. Total annual precipitation is 41.2 inches, with January being the wettest month (6.0") and July the driest (0.6").