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Weather & Climate in San Juan, Ecuador
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Juan experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 45°F in January while summers reach 52°F in July / relatively mild seasonal variation. The area gets 303 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 131.1 inches (wetter than the 38-inch national average). The area receives 2.2 inches of snow annually. The city sits at an elevation of 10,571 feet.
Temperature
45°F Jan (7°C)
52°F Jul (11°C)
| Annual Average | 53.1°F |
| 2% below US avg | |
| January Average | 45°F (7°C) |
| July Average | 52°F (11°C) |
| Sunny Days | 303 days/yr |
Geography
| Elevation | 10,571 ft (3,222 m) |
| Area | 15.5 sq mi (40.2 km²) |
| Population Density | 0/sq mi |
| Coordinates | -1.6338°N, 78.7826°W |
| Timezone | America/Guayaquil |
Precipitation & Snow
Air Quality
Earthquake History
336 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.3.
| Aug 28, 1999 | 43 km SE of Tena, Ecuador | M6.3 | 142 km | 196 km |
| Mar 28, 1996 | 9 km SSW of Pujilí, Ecuador | M6.0 | 67 km | 33 km |
| Apr 26, 1999 | 21 km ENE of Palora, Ecuador | M6.0 | 111 km | 173 km |
| Dec 26, 1992 | 28 km W of Tena, Ecuador | M5.9 | 106 km | 12 km |
| Feb 4, 2019 | 24 km SSE of Guayaquil, Ecuador | M5.8 | 145 km | 70 km |
| Jun 12, 1991 | 9 km SSW of Alausí, Ecuador | M5.8 | 73 km | 94 km |
| Jul 14, 2022 | 11 km SW of Samborondón, Ecuador | M5.7 | 121 km | 73 km |
| Mar 26, 1995 | 13 km NNW of Naranjito, Ecuador | M5.6 | 91 km | 91 km |
| Feb 13, 2007 | 25 km ENE of Puyo, Ecuador | M5.6 | 114 km | 175 km |
| Aug 25, 1996 | 10 km WSW of San Miguel de Salcedo, Ecuador | M5.5 | 62 km | 51 km |
| Feb 22, 2019 | 14 km ESE of Eloy Alfaro, Ecuador | M5.5 | 126 km | 71 km |
| Jan 31, 2025 | 32 km W of Archidona, Ecuador | M5.5 | 115 km | 8 km |
| Apr 14, 1995 | 53 km ESE of Palora, Ecuador | M5.5 | 144 km | 165 km |
| Mar 27, 2015 | 34 km SE of Tena, Ecuador | M5.5 | 142 km | 195 km |
| Oct 8, 1995 | Peru-Ecuador border region | M5.4 | 149 km | 33 km |
| Jan 7, 1995 | 9 km S of Puyo, Ecuador | M5.4 | 86 km | 166 km |
| Jan 25, 1994 | 6 km S of Puyo, Ecuador | M5.4 | 87 km | 168 km |
| Dec 30, 1998 | 11 km ENE of Palora, Ecuador | M5.4 | 100 km | 169 km |
| Apr 28, 2015 | 6 km NNW of Milagro, Ecuador | M5.4 | 106 km | 89 km |
| Mar 25, 2014 | 17 km ESE of Coronel Marcelino Maridueña, Ecuador | M5.3 | 88 km | 35 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Nearby Volcanoes
11 volcanoes within 200 km. Closest: Licto (25 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Licto | Pyroclastic cone(s) | 3,336 m (10,945 ft) | Unknown | 25 km |
| Sangay | Stratovolcano | 5,286 m (17,343 ft) | 2020 | 64 km |
| Illiniza | Stratovolcano | 5,248 m (17,218 ft) | Unknown | 109 km |
| Cotopaxi | Stratovolcano | 5,911 m (19,393 ft) | 2016 | 113 km |
| Atacazo | Stratovolcano | 4,463 m (14,642 ft) | -320 | 144 km |
| Antisana | Stratovolcano | 5,753 m (18,875 ft) | 1802 | 147 km |
| Aliso | Stratovolcano | 4,267 m (13,999 ft) | -2450 | 150 km |
| Chacana | Caldera | 4,643 m (15,233 ft) | 1773 | 152 km |
| Guagua Pichincha | Stratovolcano | 4,784 m (15,696 ft) | 2002 | 164 km |
| Sumaco | Stratovolcano | 3,990 m (13,091 ft) | 1895 | 177 km |
| Pululahua | Caldera | 3,356 m (11,010 ft) | 290 | 189 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 45°F (7°C) | 2.0 in | Coldest |
| February | 54°F (12°C) | 3.0 in | |
| March | 54°F (12°C) | 3.5 in | |
| April | 54°F (12°C) | 3.6 in | Wettest |
| May | 54°F (12°C) | 2.6 in | |
| June | 53°F (11°C) | 2.5 in | |
| July | 52°F (11°C) | 1.9 in | |
| August | 52°F (11°C) | 1.6 in | Driest |
| September | 53°F (12°C) | 2.0 in | |
| October | 54°F (12°C) | 2.5 in | |
| November | 54°F (12°C) | 2.2 in | |
| December | 54°F (12°C) | 1.9 in | Warmest |
San Juan has a seasonal temperature swing of 9°F / from 45°F in January to 54°F in December. Total annual precipitation is 29.3 inches, with April being the wettest month (3.6") and August the driest (1.6").