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Weather & Climate in Arraiolos, Portugal
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Arraiolos enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 49°F in January while summers reach 74°F in July. The area gets 322 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 19.2 inches (drier than the 38-inch national average). The city sits at an elevation of 1,119 feet.
Temperature
49°F Jan (10°C)
74°F Jul (23°C)
| Annual Average | 60.8°F |
| 13% above US avg | |
| January Average | 49°F (10°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 322 days/yr |
Geography
| Elevation | 1,119 ft (341 m) |
| Area | 33.8 sq mi (87.4 km²) |
| Population Density | 0/sq mi |
| Coordinates | 38.7236°N, 7.9848°W |
| Timezone | Europe/Lisbon |
Precipitation & Snow
Air Quality
Earthquake History
123 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Feb 17, 2025 | 1 km NE of Charneca de Caparica, Portugal | M4.8 | 105 km | 10 km |
| Jul 4, 1994 | 13 km ENE of El Cerro de Andévalo, Spain | M4.3 | 146 km | 10 km |
| Aug 17, 2017 | 5 km N of Arruda dos Vinhos, Portugal | M4.2 | 101 km | 10 km |
| Jan 15, 2018 | 25 km NNW of Évora, Portugal | M4.1 | 8 km | 11 km |
| Mar 27, 2010 | 13 km SE of Vale da Amoreira, Portugal | M4.1 | 43 km | 15 km |
| Jan 22, 2006 | 0 km SE of Feria, Spain | M4.1 | 126 km | 11 km |
| Jul 31, 1998 | 23 km W of Estremoz, Portugal | M3.8 | 20 km | 5 km |
| Sep 20, 1999 | 0 km SW of Caxias, Portugal | M3.8 | 113 km | 10 km |
| Sep 4, 1997 | 24 km WNW of Sines, Portugal | M3.7 | 122 km | 10 km |
| Apr 10, 2001 | 6 km SSE of Louriçal, Portugal | M3.7 | 150 km | 10 km |
| Mar 28, 2002 | 43 km W of Sines, Portugal | M3.7 | 145 km | 10 km |
| Sep 4, 1996 | 4 km E of Santo Isidoro, Portugal | M3.6 | 122 km | 10 km |
| Jan 19, 1997 | 9 km WNW of Redondo, Portugal | M3.6 | 30 km | 10 km |
| Feb 1, 2017 | 4 km WSW of Porto de Mós, Portugal | M3.6 | 123 km | 11 km |
| Apr 30, 1999 | 7 km WNW of Marinha Grande, Portugal | M3.6 | 146 km | 10 km |
| Feb 18, 1990 | 2 km ENE of Abrigada, Portugal | M3.6 | 99 km | 10 km |
| Jan 6, 2007 | 36 km SSW of Cascais, Portugal | M3.6 | 149 km | 16 km |
| Oct 24, 1995 | 6 km NW of Porto Covo, Portugal | M3.5 | 118 km | 10 km |
| Feb 14, 1996 | 15 km SSW of Évora, Portugal | M3.5 | 32 km | 10 km |
| Jan 11, 2005 | 12 km WSW of Montemor-o-Novo, Portugal | M3.5 | 34 km | 0 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 | 97 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 49°F (10°C) | 3.6 in | Coldest |
| February | 51°F (11°C) | 2.9 in | |
| March | 55°F (13°C) | 2.1 in | |
| April | 57°F (14°C) | 2.4 in | |
| May | 62°F (17°C) | 2.0 in | |
| June | 69°F (20°C) | 0.9 in | |
| July | 74°F (23°C) | 0.2 in | Driest |
| August | 74°F (23°C) | 0.2 in | Warmest |
| September | 70°F (21°C) | 1.1 in | |
| October | 63°F (17°C) | 2.8 in | |
| November | 55°F (13°C) | 3.4 in | |
| December | 51°F (10°C) | 4.0 in | Wettest |
Arraiolos has a seasonal temperature swing of 25°F / from 49°F in January to 74°F in August. Total annual precipitation is 25.6 inches, with December being the wettest month (4.0") and July the driest (0.2").