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Weather & Climate in San Millán de los Caballeros, Spain
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Millán de los Caballeros experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 39°F in January while summers reach 69°F in July. The area gets 295 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 22.4 inches (drier than the 38-inch national average). The city sits at an elevation of 2,457 feet.
Temperature
39°F Jan (4°C)
69°F Jul (21°C)
| Annual Average | 53.6°F |
| 1% below US avg | |
| January Average | 39°F (4°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 295 days/yr |
Geography
| Elevation | 2,457 ft (749 m) |
| Area | 8.2 sq mi (21.1 km²) |
| Population Density | 21/sq mi |
| Coordinates | 42.2852°N, 5.5611°W |
| Timezone | Europe/Madrid |
Precipitation & Snow
Air Quality
Earthquake History
269 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.4.
| May 21, 1997 | 3 km NW of Becerreá, Spain | M5.4 | 149 km | 19 km |
| May 21, 1997 | 5 km NE of Becerreá, Spain | M5.3 | 145 km | 19 km |
| May 22, 1997 | 0 km E of Becerreá, Spain | M5.1 | 146 km | 17 km |
| Jun 10, 2006 | 12 km NNE of Castrillo de Cabrera, Spain | M4.8 | 77 km | 9 km |
| May 23, 1997 | 3 km NNW of San Román, Spain | M4.7 | 141 km | 10 km |
| Jan 23, 2003 | 4 km ENE of Villalcampo, Spain | M4.5 | 91 km | 6 km |
| Jan 12, 2003 | 4 km ENE of Villalcampo, Spain | M4.3 | 91 km | 3 km |
| May 22, 1997 | 4 km N of Becerreá, Spain | M4.1 | 148 km | 10 km |
| Oct 12, 1996 | 6 km SSW of Bárzana, Spain | M4.1 | 98 km | 10 km |
| Sep 30, 2023 | 4 km NNW of Igüeña, Spain | M4.0 | 81 km | 10 km |
| Oct 29, 1996 | 11 km N of Salas, Spain | M3.9 | 148 km | 10 km |
| Feb 2, 1997 | 6 km SSW of Becerreá, Spain | M3.9 | 146 km | 10 km |
| Nov 30, 1995 | 9 km NNW of San Román, Spain | M3.8 | 147 km | 10 km |
| Nov 30, 1995 | 7 km NW of San Román, Spain | M3.8 | 146 km | 10 km |
| May 22, 1997 | 6 km S of Soto del Barco, Spain | M3.8 | 139 km | 10 km |
| May 22, 1997 | 8 km SW of Cudillero, Spain | M3.8 | 147 km | 10 km |
| Dec 24, 1995 | 8 km SW of Becerreá, Spain | M3.8 | 147 km | 10 km |
| Jan 9, 1996 | 1 km NW of Becerreá, Spain | M3.7 | 148 km | 10 km |
| Nov 18, 1997 | 6 km SSW of Becerreá, Spain | M3.7 | 145 km | 10 km |
| Aug 15, 2007 | 5 km SW of Pomar de Valdivia, Spain | M3.7 | 121 km | 3 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 39°F (4°C) | 2.5 in | Coldest |
| February | 43°F (6°C) | 2.1 in | |
| March | 47°F (8°C) | 1.4 in | |
| April | 50°F (10°C) | 1.9 in | |
| May | 57°F (14°C) | 2.2 in | |
| June | 65°F (18°C) | 1.5 in | |
| July | 69°F (21°C) | 0.9 in | Warmest |
| August | 69°F (20°C) | 0.8 in | Driest |
| September | 63°F (17°C) | 1.4 in | |
| October | 54°F (12°C) | 2.3 in | |
| November | 46°F (8°C) | 2.5 in | |
| December | 41°F (5°C) | 2.8 in | Wettest |
San Millán de los Caballeros has a seasonal temperature swing of 30°F / from 39°F in January to 69°F in July. Total annual precipitation is 22.4 inches, with December being the wettest month (2.8") and August the driest (0.8").