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Weather & Climate in São Mateus, Portugal
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
São Mateus enjoys a temperate climate with an average annual temperature of 66°F (19°C). Winters average 60°F in January while summers reach 73°F in July / relatively mild seasonal variation. The area gets 258 sunny days per year, above the national average. Annual precipitation totals 43.1 inches. The city sits at an elevation of 66 feet.
Temperature
60°F Jan (16°C)
73°F Jul (23°C)
| Annual Average | 66.1°F |
| 22% above US avg | |
| January Average | 60°F (16°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 258 days/yr |
Geography
| Elevation | 66 ft (20 m) |
| Area | 2.4 sq mi (6.3 km²) |
| Population Density | 1,546/sq mi |
| Coordinates | 38.6563°N, 27.2694°W |
| Timezone | Atlantic/Azores |
Precipitation & Snow
Air Quality
Earthquake History
63 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.2.
| Jul 9, 1998 | 12 km N of Horta, Portugal | M6.2 | 118 km | 10 km |
| Jun 27, 1997 | 50 km SE of Porto Martins, Portugal | M5.9 | 62 km | 10 km |
| Jun 27, 1997 | 51 km SE of Porto Judeu, Portugal | M5.2 | 61 km | 10 km |
| Jun 28, 1997 | 45 km SE of Porto Judeu, Portugal | M5.1 | 55 km | 10 km |
| Mar 24, 1996 | 53 km SE of Porto Martins, Portugal | M4.9 | 66 km | 10 km |
| Jun 18, 1991 | 46 km NW of Mosteiros, Portugal | M4.9 | 107 km | 10 km |
| Jan 14, 2024 | 4 km W of Fonte Bastardo, Portugal | M4.9 | 13 km | 10 km |
| Aug 27, 1997 | 69 km SE of Porto Martins, Portugal | M4.9 | 81 km | 10 km |
| Apr 11, 2014 | 66 km WNW of Mosteiros, Portugal | M4.9 | 92 km | 10 km |
| Jan 27, 2020 | 38 km W of Mosteiros, Portugal | M4.8 | 118 km | 10 km |
| Jun 28, 1997 | 49 km SSE of Porto Judeu, Portugal | M4.8 | 58 km | 10 km |
| Jul 11, 1998 | 9 km WSW of Castelo Branco, Portugal | M4.7 | 135 km | 10 km |
| Jun 28, 1997 | 55 km SSE of Porto Martins, Portugal | M4.7 | 65 km | 10 km |
| Mar 4, 2000 | 49 km SE of Porto Martins, Portugal | M4.6 | 63 km | 10 km |
| Jan 19, 2025 | 4 km NNW of Ribeirinha, Portugal | M4.6 | 7 km | 10 km |
| Jul 15, 1997 | 44 km SE of Porto Judeu, Portugal | M4.5 | 55 km | 10 km |
| Sep 25, 2023 | 16 km S of Angra do Heroísmo, Portugal | M4.5 | 17 km | 10 km |
| Aug 10, 1993 | 53 km SSE of Porto Judeu, Portugal | M4.5 | 62 km | 10 km |
| Jun 27, 1997 | 2 km NE of Porto Martins, Portugal | M4.5 | 20 km | 10 km |
| Jun 29, 1997 | 43 km SSE of Porto Martins, Portugal | M4.5 | 54 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
3 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2012 | Gordon | Category 1 | 81 mph | 258 km |
| 2006 | Gordon | Category 1 | 81 mph | 134 km |
| 1998 | Ivan | Category 1 | 86 mph | 230 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 9.0 m (30 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1641 | AZORES | Unknown | 9.0 m | — | 78 km |
| 1980 | AZORES | Earthquake | 0.4 m | 69 | 42 km |
| 1757 | AZORES | Earthquake | — | 1,053 | 70 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
8 volcanoes within 200 km. Closest: Terceira (9 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Terceira | Stratovolcano(es) | 1,023 m (3,356 ft) | 2000 | 9 km |
| Graciosa | Stratovolcano | 402 m (1,319 ft) | -1950 | 73 km |
| Pico | Stratovolcano | 2,351 m (7,713 ft) | 1720 | 101 km |
| Fayal | Stratovolcano | 1,043 m (3,422 ft) | 1958 | 127 km |
| Sete Cidades | Stratovolcano | 856 m (2,808 ft) | 1880 | 157 km |
| Picos Volcanic System | Pyroclastic cone(s) | 350 m (1,148 ft) | 1652 | 170 km |
| Agua de Pau | Stratovolcano | 947 m (3,107 ft) | 1564 | 186 km |
| Furnas | Stratovolcano | 805 m (2,641 ft) | 1630 | 197 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 60°F (16°C) | 5.3 in | |
| February | 60°F (16°C) | 4.2 in | Coldest |
| March | 61°F (16°C) | 3.8 in | |
| April | 62°F (17°C) | 3.0 in | |
| May | 65°F (18°C) | 2.6 in | |
| June | 69°F (20°C) | 1.9 in | |
| July | 73°F (23°C) | 1.5 in | Driest |
| August | 75°F (24°C) | 2.2 in | Warmest |
| September | 73°F (23°C) | 3.6 in | |
| October | 69°F (20°C) | 4.7 in | |
| November | 65°F (18°C) | 5.1 in | |
| December | 62°F (17°C) | 5.4 in | Wettest |
São Mateus has a seasonal temperature swing of 15°F / from 60°F in February to 75°F in August. Total annual precipitation is 43.1 inches, with December being the wettest month (5.4") and July the driest (1.5").