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Weather & Climate in San Juan de Ilumán, Ecuador
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Juan de Ilumán enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 62°F in January while summers reach 57°F in July / relatively mild seasonal variation. The area gets 350 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 69.0 inches (wetter than the 38-inch national average). The city sits at an elevation of 9,035 feet.
Temperature
62°F Jan (17°C)
57°F Jul (14°C)
| Annual Average | 56.9°F |
| 5% above US avg | |
| January Average | 62°F (17°C) |
| July Average | 57°F (14°C) |
| Sunny Days | 350 days/yr |
Geography
| Elevation | 9,035 ft (2,754 m) |
| Area | 2.2 sq mi (5.6 km²) |
| Population Density | 0/sq mi |
| Coordinates | 0.2730°N, 78.2336°W |
| Timezone | America/Guayaquil |
Precipitation & Snow
Air Quality
Earthquake History
136 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.9.
| Feb 9, 2013 | 2 km NNE of Yacuanquer, Colombia | M6.9 | 134 km | 145 km |
| Dec 26, 1992 | 28 km W of Tena, Ecuador | M5.9 | 144 km | 12 km |
| Jul 25, 2022 | 9 km N of San Gabriel, Ecuador | M5.7 | 64 km | 3 km |
| Jan 31, 2025 | 32 km W of Archidona, Ecuador | M5.5 | 127 km | 8 km |
| Aug 11, 1990 | 20 km NNE of Quito, Ecuador | M5.3 | 44 km | 5 km |
| Mar 28, 2004 | 27 km ENE of Píllaro, Ecuador | M5.3 | 147 km | 13 km |
| Sep 13, 2003 | 29 km ENE of San Miguel de Salcedo, Ecuador | M5.3 | 140 km | 33 km |
| May 11, 1994 | 51 km WNW of Cotacachi, Ecuador | M5.3 | 56 km | 19 km |
| Feb 8, 2012 | near the coast of Ecuador | M5.2 | 122 km | 65 km |
| Mar 30, 2020 | 30 km ESE of Pimampiro, Ecuador | M5.2 | 61 km | 131 km |
| Oct 9, 2009 | 3 km N of Tena, Ecuador | M5.2 | 145 km | 35 km |
| Oct 8, 2000 | Colombia-Ecuador border region | M5.1 | 20 km | 33 km |
| Aug 12, 2014 | 20 km WSW of Cayambe, Ecuador | M5.1 | 34 km | 12 km |
| Jun 18, 2023 | 36 km NE of Archidona, Ecuador | M5.1 | 128 km | 27 km |
| Jul 7, 1994 | 30 km ENE of Píllaro, Ecuador | M5.1 | 150 km | 13 km |
| Mar 16, 2020 | 32 km ESE of San Lorenzo de Esmeraldas, Ecuador | M5.0 | 106 km | 42 km |
| Jun 17, 2025 | 44 km ENE of San Miguel de Salcedo, Ecuador | M5.0 | 132 km | 10 km |
| Apr 15, 2004 | 22 km E of San Miguel de Salcedo, Ecuador | M5.0 | 145 km | 10 km |
| May 22, 2018 | 28 km NW of Cotacachi, Ecuador | M5.0 | 33 km | 33 km |
| May 6, 2024 | 32 km ESE of San Gabriel, Ecuador | M4.9 | 76 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 5.0 m (16 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1906 | OFF COAST | Earthquake | 5.0 m | 1,000 | 147 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
15 volcanoes within 200 km. Closest: Imbabura (6 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Imbabura | Compound | 4,609 m (15,121 ft) | -5550 | 6 km |
| Cuicocha | Caldera | 3,246 m (10,650 ft) | 650 | 15 km |
| Mojanda | Stratovolcano(es) | 4,263 m (13,986 ft) | Unknown | 16 km |
| Chachimbiro | Stratovolcano | 4,106 m (13,471 ft) | -3740 | 23 km |
| Pululahua | Caldera | 3,356 m (11,010 ft) | 290 | 37 km |
| Cayambe | Compound | 5,790 m (18,996 ft) | 1786 | 39 km |
| Guagua Pichincha | Stratovolcano | 4,784 m (15,696 ft) | 2002 | 64 km |
| Chiles-Cerro Negro | Stratovolcano | 4,698 m (15,413 ft) | 1936 | 69 km |
| Chacana | Caldera | 4,643 m (15,233 ft) | 1773 | 72 km |
| Reventador | Stratovolcano | 3,562 m (11,686 ft) | 2020 | 75 km |
| Atacazo | Stratovolcano | 4,463 m (14,642 ft) | -320 | 82 km |
| Antisana | Stratovolcano | 5,753 m (18,875 ft) | 1802 | 85 km |
| Cumbal | Stratovolcano | 4,764 m (15,630 ft) | 1926 | 86 km |
| Aliso | Stratovolcano | 4,267 m (13,999 ft) | -2450 | 93 km |
| Cotopaxi | Stratovolcano | 5,911 m (19,393 ft) | 2016 | 108 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 62°F (17°C) | 2.8 in | Warmest |
| February | 57°F (14°C) | 3.3 in | |
| March | 57°F (14°C) | 3.9 in | |
| April | 57°F (14°C) | 4.5 in | Wettest |
| May | 57°F (14°C) | 2.9 in | |
| June | 57°F (14°C) | 1.9 in | |
| July | 57°F (14°C) | 1.1 in | Coldest |
| August | 57°F (14°C) | 1.0 in | Driest |
| September | 57°F (14°C) | 1.9 in | |
| October | 57°F (14°C) | 3.4 in | |
| November | 57°F (14°C) | 4.0 in | |
| December | 57°F (14°C) | 3.0 in |
San Juan de Ilumán has a seasonal temperature swing of 5°F / from 57°F in July to 62°F in January. Total annual precipitation is 33.7 inches, with April being the wettest month (4.5") and August the driest (1.0").