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Weather & Climate in San Francisco de Mostazal, Chile
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Francisco de Mostazal enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 73°F in January while summers reach 51°F in July / relatively mild seasonal variation. The area gets 294 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 23.3 inches (drier than the 38-inch national average). The city sits at an elevation of 1,568 feet.
Temperature
73°F Jan (23°C)
51°F Jul (10°C)
| Annual Average | 60.9°F |
| 13% above US avg | |
| January Average | 73°F (23°C) |
| July Average | 51°F (10°C) |
| Sunny Days | 294 days/yr |
Geography
| Elevation | 1,568 ft (478 m) |
| Area | 1.9 sq mi (4.9 km²) |
| Population Density | 13,409/sq mi |
| Coordinates | -33.9822°N, 70.7104°W |
| Timezone | America/Santiago |
Precipitation & Snow
Air Quality
Earthquake History
8,807 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.0.
| Mar 11, 2010 | 52 km NW of Santa Cruz, Chile | M7.0 | 107 km | 18 km |
| Mar 11, 2010 | 61 km NW of Santa Cruz, Chile | M6.9 | 114 km | 11 km |
| Aug 1, 2019 | 96 km SW of San Antonio, Chile | M6.8 | 150 km | 25 km |
| Aug 28, 2004 | 67 km ESE of Teno, Chile | M6.5 | 134 km | 5 km |
| Jun 16, 2000 | 53 km ESE of Puente Alto, Chile | M6.4 | 59 km | 120 km |
| Feb 28, 2010 | 27 km W of Rauco, Chile | M6.2 | 132 km | 46 km |
| Feb 27, 2010 | 25 km NW of Cartagena, Chile | M6.2 | 121 km | 31 km |
| May 18, 1992 | 38 km W of San Antonio, Chile | M6.1 | 128 km | 30 km |
| Feb 27, 2010 | 42 km W of Santa Cruz, Chile | M6.0 | 130 km | 35 km |
| Mar 5, 1999 | 110 km ESE of Machalí, Chile | M6.0 | 128 km | 10 km |
| Feb 27, 2010 | 40 km SW of Valparaíso, Chile | M6.0 | 139 km | 35 km |
| Feb 27, 2010 | 44 km SW of San Antonio, Chile | M6.0 | 114 km | 35 km |
| Jul 16, 2011 | 32 km SW of San Antonio, Chile | M6.0 | 105 km | 20 km |
| Mar 11, 2010 | 61 km WNW of Santa Cruz, Chile | M6.0 | 131 km | 32 km |
| Feb 22, 1996 | 10 km SW of San Antonio, Chile | M6.0 | 95 km | 43 km |
| Feb 28, 2010 | 70 km SSW of San Antonio, Chile | M5.9 | 116 km | 32 km |
| Apr 28, 2017 | 37 km WSW of Valparaíso, Chile | M5.9 | 144 km | 22 km |
| Nov 21, 2012 | 45 km SSW of San Antonio, Chile | M5.9 | 107 km | 18 km |
| May 2, 2010 | 65 km NW of Santa Cruz, Chile | M5.9 | 111 km | 13 km |
| Sep 17, 2015 | 13 km NNW of Viña del Mar, Chile | M5.9 | 145 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 3.5 m (11 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1985 | CENTRAL CHILE | Earthquake | 3.5 m | 180 | 132 km |
| 2010 | CENTRAL CHILE | Earthquake | 0.1 m | — | 114 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
11 volcanoes within 200 km. Closest: San Jose (78 km).
| Name | Type | Elevation | Last Eruption | Distance |
| San Jose | Stratovolcano(es) | 6,070 m (19,915 ft) | 1960 | 78 km |
| Palomo | Stratovolcano | 4,860 m (15,945 ft) | Unknown | 79 km |
| Maipo | Caldera | 5,323 m (17,464 ft) | 1912 | 83 km |
| Atuel, Caldera del | Caldera | 5,189 m (17,024 ft) | Unknown | 96 km |
| Tinguiririca | Stratovolcano | 4,280 m (14,042 ft) | 1917 | 98 km |
| Tupungatito | Stratovolcano | 5,660 m (18,570 ft) | 1987 | 105 km |
| Planchon-Peteroa | Stratovolcano(es) | 3,977 m (13,048 ft) | 2019 | 139 km |
| Infiernillo | Volcanic field | 3,007 m (9,865 ft) | -6890 | 147 km |
| Calabozos | Caldera | 3,508 m (11,509 ft) | Unknown | 176 km |
| Descabezado Grande | Stratovolcano(es) | 3,953 m (12,969 ft) | 1933 | 178 km |
| Azul, Cerro | Stratovolcano | 3,788 m (12,428 ft) | 1967 | 186 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 73°F (23°C) | 0.0 in | Warmest, Driest |
| February | 71°F (21°C) | 0.1 in | |
| March | 67°F (19°C) | 0.2 in | |
| April | 61°F (16°C) | 0.9 in | |
| May | 55°F (13°C) | 4.1 in | |
| June | 51°F (10°C) | 5.5 in | |
| July | 51°F (10°C) | 6.1 in | Coldest, Wettest |
| August | 52°F (11°C) | 3.0 in | |
| September | 55°F (13°C) | 1.5 in | |
| October | 61°F (16°C) | 1.0 in | |
| November | 66°F (19°C) | 0.7 in | |
| December | 69°F (21°C) | 0.2 in |
San Francisco de Mostazal has a seasonal temperature swing of 22°F / from 51°F in July to 73°F in January. Total annual precipitation is 23.3 inches, with July being the wettest month (6.1") and January the driest (0.0").