Santiago do Cacém, Portugal

Full City Profile

7,797 Population 81/sq mi density

722 ft Elevation 220 meters

61°F Avg Temperature 16°C

Santiago do Cacém enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 52°F in January while summers reach 70°F in July. The area gets 292 sunny days per year. Annual precipitation totals 24.0 inches. The area receives 0.0 inches of snow annually.

Temperature

52°F Jan (11°C) 70°F Jul (21°C)

Annual Average	60.8°F
	13% above US avg
January Average	52°F (11°C)
July Average	70°F (21°C)
Sunny Days	292 days/yr

Geography

Elevation	722 ft (220 m)
Area	95.9 sq mi (248.4 km²)
Population Density	81/sq mi
Coordinates	38.0169°N, 8.6948°W
Timezone	Europe/Lisbon

Precipitation & Snow

Annual Rainfall 24.0"

37% below US avg

Snowfall 0.0"

Wettest Month (Dec) 4.13"

Driest Month (Jul) 0.16"

Air Quality

Earthquake History

172 earthquakes (M2.5+) within 150 km since 1990. Strongest: M5.0. Most recent: M2.9 on Apr 16, 2025.

Aug 26, 2024	56 km W of Sines, Portugal	M5.0	71 km
Feb 17, 2025	1 km NE of Charneca de Caparica, Portugal	M4.8	80 km
May 27, 2005	26 km SSW of Carvoeiro, Portugal	M4.3	128 km
Aug 17, 2017	5 km N of Arruda dos Vinhos, Portugal	M4.2	118 km
Mar 27, 2010	13 km SE of Vale da Amoreira, Portugal	M4.1	142 km
Jan 15, 2018	25 km NNW of Évora, Portugal	M4.1	108 km
Jan 9, 2007	22 km SSW of Faro, Portugal	M4.0	142 km
Sep 19, 2004	27 km WSW of Sagres, Portugal	M3.8	133 km
Apr 14, 2008	45 km WNW of Vila do Bispo, Portugal	M3.8	110 km
Dec 30, 1994	56 km WNW of Sagres, Portugal	M3.8	121 km
Sep 20, 1999	0 km SW of Caxias, Portugal	M3.8	92 km
Jul 31, 1998	23 km W of Estremoz, Portugal	M3.8	120 km
Mar 26, 2011	6 km NNW of São Marcos da Serra, Portugal	M3.8	72 km
May 9, 1994	18 km WSW of Sagres, Portugal	M3.7	125 km
Mar 28, 2002	43 km W of Sines, Portugal	M3.7	58 km
Mar 26, 1998	63 km WNW of Vila do Bispo, Portugal	M3.7	110 km
Sep 4, 1997	24 km WNW of Sines, Portugal	M3.7	36 km
Dec 27, 1994	27 km SW of Sagres, Portugal	M3.7	136 km
Apr 10, 2007	7 km SSE of Sagres, Portugal	M3.7	121 km
Feb 21, 1993	40 km SSE of Sagres, Portugal	M3.7	150 km

Source: USGS (M2.5+, 1990–2025)

Tsunami History

1 tsunami recorded within 500 km.

Year	Location	Cause	Max Wave	Deaths	Distance
1531	TAGUS RIVER, LISBON	Earthquake	—	30,000	84 km

Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	52°F (11°C)	3.5 in	Coldest
February	53°F (12°C)	2.8 in
March	56°F (13°C)	1.8 in
April	58°F (15°C)	2.1 in
May	62°F (17°C)	1.6 in
June	67°F (19°C)	0.6 in
July	70°F (21°C)	0.2 in	Driest
August	70°F (21°C)	0.2 in	Warmest
September	68°F (20°C)	0.9 in
October	64°F (18°C)	2.6 in
November	57°F (14°C)	3.5 in
December	53°F (12°C)	4.1 in	Wettest

Santiago do Cacém has a seasonal temperature swing of 19°F / from 52°F in January to 70°F in August. Total annual precipitation is 24.0 inches, with December being the wettest month (4.1") and July the driest (0.2").

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