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Weather & Climate in Castelo Branco, Portugal
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Castelo Branco enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 55°F in January while summers reach 68°F in July / relatively mild seasonal variation. The area gets 240 sunny days per year, above the national average. Annual precipitation totals 53.0 inches (wetter than the 38-inch national average). The city sits at an elevation of 154 feet.
Temperature
55°F Jan (13°C)
68°F Jul (20°C)
| Annual Average | 60.9°F |
| 13% above US avg | |
| January Average | 55°F (13°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 240 days/yr |
Geography
| Elevation | 154 ft (47 m) |
| Area | 2.2 sq mi (5.6 km²) |
| Population Density | 603/sq mi |
| Coordinates | 38.5220°N, 28.7137°W |
| Timezone | Atlantic/Azores |
Precipitation & Snow
Air Quality
Earthquake History
72 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 | 16 km | 10 km |
| Mar 29, 2017 | 142 km E of Santa Cruz das Flores, Portugal | M5.4 | 148 km | 10 km |
| Jan 20, 1993 | 49 km W of Castelo Branco, Portugal | M5.4 | 49 km | 10 km |
| Jan 11, 2021 | 69 km NW of Castelo Branco, Portugal | M5.4 | 70 km | 10 km |
| Jun 23, 1991 | 109 km E of Santa Cruz das Flores, Portugal | M5.2 | 146 km | 10 km |
| Aug 1, 2000 | 39 km NW of Castelo Branco, Portugal | M5.1 | 40 km | 10 km |
| Sep 29, 2023 | 122 km SE of Lajes das Flores, Portugal | M5.0 | 142 km | 14 km |
| Jan 12, 1993 | 45 km WSW of Castelo Branco, Portugal | M5.0 | 45 km | 10 km |
| May 14, 2010 | 117 km E of Santa Cruz das Flores, Portugal | M4.9 | 144 km | 24 km |
| Jan 28, 1993 | 46 km W of Castelo Branco, Portugal | M4.9 | 46 km | 10 km |
| Nov 29, 1991 | 131 km SE of Lajes das Flores, Portugal | M4.9 | 140 km | 10 km |
| Jan 14, 2024 | 4 km W of Fonte Bastardo, Portugal | M4.9 | 139 km | 10 km |
| Jul 1, 2013 | Azores Islands, Portugal | M4.8 | 130 km | 9 km |
| May 6, 1991 | 137 km WSW of Castelo Branco, Portugal | M4.8 | 137 km | 10 km |
| Jun 14, 2015 | 37 km WNW of Castelo Branco, Portugal | M4.8 | 38 km | 10 km |
| Feb 23, 1998 | 80 km NW of Castelo Branco, Portugal | M4.8 | 81 km | 10 km |
| Jul 6, 2010 | 119 km NW of Castelo Branco, Portugal | M4.7 | 119 km | 10 km |
| Feb 15, 1993 | 42 km W of Castelo Branco, Portugal | M4.7 | 43 km | 13 km |
| Feb 16, 1993 | 73 km NW of Castelo Branco, Portugal | M4.7 | 73 km | 10 km |
| Jul 11, 1998 | 9 km WSW of Castelo Branco, Portugal | M4.7 | 9 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 1.
| Year | Name | Category | Max Wind | Closest |
| 2019 | Lorenzo | Category 1 | 92 mph | 297 km |
| 2006 | Gordon | Category 1 | 81 mph | 120 km |
| 1998 | Ivan | Category 1 | 86 mph | 257 km |
| 1992 | Charley | Category 1 | 75 mph | 271 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 | — | 55 km |
| 1980 | AZORES | Earthquake | 0.4 m | 69 | 87 km |
| 1757 | AZORES | Earthquake | — | 1,053 | 57 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Fayal (9 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Fayal | Stratovolcano | 1,043 m (3,422 ft) | 1958 | 9 km |
| Pico | Stratovolcano | 2,351 m (7,713 ft) | 1720 | 28 km |
| Graciosa | Stratovolcano | 402 m (1,319 ft) | -1950 | 85 km |
| Terceira | Stratovolcano(es) | 1,023 m (3,356 ft) | 2000 | 123 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 55°F (13°C) | 7.0 in | Wettest |
| February | 54°F (12°C) | 5.3 in | Coldest |
| March | 55°F (13°C) | 5.0 in | |
| April | 56°F (14°C) | 3.8 in | |
| May | 59°F (15°C) | 3.3 in | |
| June | 63°F (17°C) | 2.2 in | |
| July | 68°F (20°C) | 1.9 in | Driest |
| August | 70°F (21°C) | 2.6 in | Warmest |
| September | 68°F (20°C) | 4.1 in | |
| October | 64°F (18°C) | 5.5 in | |
| November | 60°F (15°C) | 5.8 in | |
| December | 57°F (14°C) | 6.4 in |
Castelo Branco has a seasonal temperature swing of 16°F / from 54°F in February to 70°F in August. Total annual precipitation is 53.0 inches, with January being the wettest month (7.0") and July the driest (1.9").