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Weather & Climate in Relva, Portugal
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Relva enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 56°F in January while summers reach 68°F in July / relatively mild seasonal variation. The area gets 259 sunny days per year, above the national average. Annual precipitation totals 42.4 inches. The city sits at an elevation of 322 feet.
Temperature
56°F Jan (13°C)
68°F Jul (20°C)
| Annual Average | 61.7°F |
| 14% above US avg | |
| January Average | 56°F (13°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 259 days/yr |
Geography
| Elevation | 322 ft (98 m) |
| Area | 4.2 sq mi (11.0 km²) |
| Population Density | 709/sq mi |
| Coordinates | 37.7527°N, 25.7185°W |
| Timezone | Atlantic/Azores |
Precipitation & Snow
Air Quality
Earthquake History
111 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.3.
| Apr 5, 2007 | 74 km SE of Povoação, Portugal | M6.3 | 109 km | 14 km |
| Apr 7, 2007 | 82 km SE of Senhora do Rosário, Portugal | M6.1 | 119 km | 8 km |
| Jun 27, 1997 | 50 km SE of Porto Martins, Portugal | M5.9 | 106 km | 10 km |
| Apr 30, 2013 | Azores Islands region | M5.9 | 73 km | 10 km |
| Mar 9, 1996 | 111 km SE of Povoação, Portugal | M5.7 | 143 km | 10 km |
| Apr 8, 2007 | 90 km SE of Povoação, Portugal | M5.4 | 124 km | 10 km |
| Apr 8, 2007 | 91 km SE of Povoação, Portugal | M5.2 | 125 km | 10 km |
| Jun 27, 1997 | 51 km SE of Porto Judeu, Portugal | M5.2 | 109 km | 10 km |
| Dec 9, 1991 | 98 km SE of Senhora do Rosário, Portugal | M5.2 | 135 km | 10 km |
| Jun 28, 1997 | 45 km SE of Porto Judeu, Portugal | M5.1 | 114 km | 10 km |
| Mar 11, 2025 | 30 km SSE of Povoação, Portugal | M5.1 | 59 km | 10 km |
| Apr 6, 2007 | 78 km SE of Povoação, Portugal | M5.0 | 111 km | 10 km |
| Apr 9, 2007 | 96 km SE of Povoação, Portugal | M5.0 | 128 km | 10 km |
| Dec 9, 1999 | 107 km SE of Senhora do Rosário, Portugal | M4.9 | 142 km | 10 km |
| Jun 18, 1991 | 46 km NW of Mosteiros, Portugal | M4.9 | 64 km | 10 km |
| Apr 11, 2014 | 66 km WNW of Mosteiros, Portugal | M4.9 | 80 km | 10 km |
| Aug 27, 1997 | 69 km SE of Porto Martins, Portugal | M4.9 | 88 km | 10 km |
| Mar 24, 1996 | 53 km SE of Porto Martins, Portugal | M4.9 | 103 km | 10 km |
| Apr 8, 2007 | 114 km SE of Povoação, Portugal | M4.8 | 147 km | 10 km |
| Jan 27, 2020 | 38 km W of Mosteiros, Portugal | M4.8 | 52 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
4 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2017 | Ophelia | Category 3 | 115 mph | 271 km |
| 2016 | Alex | Category 1 | 75 mph | 293 km |
| 2012 | Gordon | Category 1 | 92 mph | 96 km |
| 2006 | Gordon | Category 1 | 81 mph | 38 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 0.2 m (1 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1939 | AZORES | Earthquake | 0.2 m | — | 135 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Picos Volcanic System (5 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Picos Volcanic System | Pyroclastic cone(s) | 350 m (1,148 ft) | 1652 | 5 km |
| Sete Cidades | Stratovolcano | 856 m (2,808 ft) | 1880 | 14 km |
| Agua de Pau | Stratovolcano | 947 m (3,107 ft) | 1564 | 22 km |
| Furnas | Stratovolcano | 805 m (2,641 ft) | 1630 | 35 km |
| Terceira | Stratovolcano(es) | 1,023 m (3,356 ft) | 2000 | 177 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 56°F (13°C) | 4.7 in | |
| February | 56°F (13°C) | 4.1 in | Coldest |
| March | 56°F (14°C) | 3.7 in | |
| April | 57°F (14°C) | 2.9 in | |
| May | 60°F (16°C) | 2.5 in | |
| June | 64°F (18°C) | 1.9 in | |
| July | 68°F (20°C) | 1.4 in | Driest |
| August | 70°F (21°C) | 2.2 in | Warmest |
| September | 69°F (20°C) | 3.8 in | |
| October | 65°F (18°C) | 4.7 in | |
| November | 61°F (16°C) | 5.3 in | Wettest |
| December | 58°F (15°C) | 5.2 in |
Relva has a seasonal temperature swing of 14°F / from 56°F in February to 70°F in August. Total annual precipitation is 42.4 inches, with November being the wettest month (5.3") and July the driest (1.4").