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Weather & Climate in San Antonio, Ecuador
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Antonio experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 45°F in January while summers reach 52°F in July / relatively mild seasonal variation. The area gets 316 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 86.8 inches (wetter than the 38-inch national average). The city sits at an elevation of 9,734 feet.
Temperature
45°F Jan (7°C)
52°F Jul (11°C)
| Annual Average | 51.4°F |
| 5% below US avg | |
| January Average | 45°F (7°C) |
| July Average | 52°F (11°C) |
| Sunny Days | 316 days/yr |
Geography
| Elevation | 9,734 ft (2,967 m) |
| Area | 143.8 sq mi (372.4 km²) |
| Population Density | 0/sq mi |
| Coordinates | -0.2888°N, 78.5772°W |
| Timezone | America/Guayaquil |
Precipitation & Snow
Air Quality
Earthquake History
161 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.9.
| May 18, 2016 | 24 km NW of Rosa Zarate, Ecuador | M6.9 | 145 km | 30 km |
| Mar 28, 1996 | 9 km SSW of Pujilí, Ecuador | M6.0 | 85 km | 33 km |
| Dec 26, 1992 | 28 km W of Tena, Ecuador | M5.9 | 99 km | 12 km |
| Jul 25, 2022 | 9 km N of San Gabriel, Ecuador | M5.7 | 136 km | 3 km |
| Mar 27, 2015 | 34 km SE of Tena, Ecuador | M5.5 | 150 km | 195 km |
| Aug 25, 1996 | 10 km WSW of San Miguel de Salcedo, Ecuador | M5.5 | 89 km | 51 km |
| Jan 31, 2025 | 32 km W of Archidona, Ecuador | M5.5 | 83 km | 8 km |
| May 11, 1994 | 51 km WNW of Cotacachi, Ecuador | M5.3 | 83 km | 19 km |
| Mar 28, 2004 | 27 km ENE of Píllaro, Ecuador | M5.3 | 88 km | 13 km |
| Aug 11, 1990 | 20 km NNE of Quito, Ecuador | M5.3 | 29 km | 5 km |
| Sep 13, 2003 | 29 km ENE of San Miguel de Salcedo, Ecuador | M5.3 | 82 km | 33 km |
| Mar 30, 2020 | 30 km ESE of Pimampiro, Ecuador | M5.2 | 118 km | 131 km |
| Feb 8, 2012 | near the coast of Ecuador | M5.2 | 130 km | 65 km |
| Oct 9, 2009 | 3 km N of Tena, Ecuador | M5.2 | 113 km | 35 km |
| Oct 8, 2000 | Colombia-Ecuador border region | M5.1 | 92 km | 33 km |
| Aug 12, 2014 | 20 km WSW of Cayambe, Ecuador | M5.1 | 41 km | 12 km |
| Jun 18, 2023 | 36 km NE of Archidona, Ecuador | M5.1 | 119 km | 27 km |
| Jul 7, 1994 | 30 km ENE of Píllaro, Ecuador | M5.1 | 93 km | 13 km |
| May 22, 2018 | 28 km NW of Cotacachi, Ecuador | M5.0 | 89 km | 33 km |
| Apr 15, 2004 | 22 km E of San Miguel de Salcedo, Ecuador | M5.0 | 84 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Nearby Volcanoes
15 volcanoes within 200 km. Closest: Atacazo (8 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Atacazo | Stratovolcano | 4,463 m (14,642 ft) | -320 | 8 km |
| Guagua Pichincha | Stratovolcano | 4,784 m (15,696 ft) | 2002 | 13 km |
| Chacana | Caldera | 4,643 m (15,233 ft) | 1773 | 38 km |
| Pululahua | Caldera | 3,356 m (11,010 ft) | 290 | 39 km |
| Illiniza | Stratovolcano | 5,248 m (17,218 ft) | Unknown | 44 km |
| Cotopaxi | Stratovolcano | 5,911 m (19,393 ft) | 2016 | 46 km |
| Antisana | Stratovolcano | 5,753 m (18,875 ft) | 1802 | 53 km |
| Mojanda | Stratovolcano(es) | 4,263 m (13,986 ft) | Unknown | 58 km |
| Aliso | Stratovolcano | 4,267 m (13,999 ft) | -2450 | 70 km |
| Cuicocha | Caldera | 3,246 m (10,650 ft) | 650 | 71 km |
| Cayambe | Compound | 5,790 m (18,996 ft) | 1786 | 75 km |
| Imbabura | Compound | 4,609 m (15,121 ft) | -5550 | 75 km |
| Chachimbiro | Stratovolcano | 4,106 m (13,471 ft) | -3740 | 90 km |
| Reventador | Stratovolcano | 3,562 m (11,686 ft) | 2020 | 105 km |
| Sumaco | Stratovolcano | 3,990 m (13,091 ft) | 1895 | 109 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 45°F (7°C) | 3.8 in | Coldest |
| February | 52°F (11°C) | 4.7 in | |
| March | 52°F (11°C) | 5.2 in | |
| April | 52°F (11°C) | 5.4 in | Warmest, Wettest |
| May | 52°F (11°C) | 4.0 in | |
| June | 52°F (11°C) | 2.3 in | |
| July | 52°F (11°C) | 1.4 in | Driest |
| August | 52°F (11°C) | 1.5 in | |
| September | 52°F (11°C) | 2.9 in | |
| October | 52°F (11°C) | 4.4 in | |
| November | 52°F (11°C) | 4.3 in | |
| December | 52°F (11°C) | 3.7 in |
San Antonio has a seasonal temperature swing of 8°F / from 45°F in January to 52°F in April. Total annual precipitation is 43.6 inches, with April being the wettest month (5.4") and July the driest (1.4").