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Weather & Climate in San Gregorio, Ecuador
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Gregorio has a warm climate with an average annual temperature of 77°F (25°C). Winters average 78°F in January while summers reach 76°F in July / relatively mild seasonal variation. The area gets 324 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 86.7 inches (wetter than the 38-inch national average). The city sits at an elevation of 7 feet.
Temperature
78°F Jan (25°C)
76°F Jul (25°C)
| Annual Average | 77.1°F |
| 43% above US avg | |
| January Average | 78°F (25°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 324 days/yr |
Geography
| Elevation | 7 ft (2 m) |
| Area | 117.1 sq mi (303.4 km²) |
| Population Density | 0/sq mi |
| Coordinates | 0.5283°N, 79.9705°W |
| Timezone | America/Guayaquil |
Precipitation & Snow
Air Quality
Earthquake History
239 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.8.
| Apr 16, 2016 | 27 km SSE of Muisne, Ecuador | M7.8 | 17 km | 21 km |
| Aug 4, 1998 | 3 km E of Bahía de Caráquez, Ecuador | M7.2 | 133 km | 33 km |
| May 18, 2016 | 24 km NW of Rosa Zarate, Ecuador | M6.9 | 40 km | 30 km |
| May 18, 2016 | 32 km SE of Muisne, Ecuador | M6.7 | 23 km | 16 km |
| Sep 2, 1990 | 34 km SW of Pedernales, Ecuador | M6.6 | 82 km | 14 km |
| Sep 28, 2000 | 45 km NNW of Bahía de Caráquez, Ecuador | M6.4 | 107 km | 23 km |
| Apr 25, 2025 | 19 km NE of Esmeraldas, Ecuador | M6.3 | 79 km | 18 km |
| Jul 11, 2016 | 33 km NNW of Rosa Zarate, Ecuador | M6.3 | 37 km | 21 km |
| Apr 20, 2016 | 21 km W of Muisne, Ecuador | M6.2 | 29 km | 14 km |
| Apr 22, 2016 | 34 km NNW of Bahía de Caráquez, Ecuador | M6.0 | 109 km | 10 km |
| Jun 30, 2017 | 35 km NNW of Bahía de Caráquez, Ecuador | M6.0 | 108 km | 13 km |
| Apr 20, 2016 | 10 km N of Muisne, Ecuador | M6.0 | 21 km | 10 km |
| Jul 11, 2016 | 33 km NNW of Rosa Zarate, Ecuador | M5.9 | 38 km | 17 km |
| Apr 22, 2016 | 36 km NNW of Bahía de Caráquez, Ecuador | M5.9 | 108 km | 10 km |
| Mar 27, 2022 | 7 km SE of Esmeraldas, Ecuador | M5.8 | 58 km | 19 km |
| Apr 17, 2016 | 34 km NE of Bahía de Caráquez, Ecuador | M5.8 | 105 km | 24 km |
| Jun 16, 2014 | 51 km NW of Pampanal de Bolívar, Ecuador | M5.7 | 147 km | 15 km |
| Apr 23, 2016 | 26 km W of Muisne, Ecuador | M5.7 | 33 km | 10 km |
| Mar 9, 2014 | 61 km NW of Valdez, Ecuador | M5.6 | 143 km | 6 km |
| Apr 17, 2016 | 50 km NW of Bahía de Caráquez, Ecuador | M5.6 | 117 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
6 tsunamis recorded within 500 km. Highest wave on record: 6.0 m (20 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1979 | COLOMBIA: OFF SHORE, PACIFIC OCEAN | Earthquake | 6.0 m | 600 | 138 km |
| 1906 | OFF COAST | Earthquake | 5.0 m | 1,000 | 82 km |
| 2016 | OFF COAST | Earthquake | 0.6 m | 663 | 17 km |
| 2025 | ECUADOR | Earthquake | 0.4 m | — | 80 km |
| 1906 | COLOMBIA-ECUADOR | Earthquake | 0.3 m | — | 126 km |
| 1958 | COLOMBIA-ECUADOR | Earthquake | — | 115 | 120 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
7 volcanoes within 200 km. Closest: Guagua Pichincha (171 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Guagua Pichincha | Stratovolcano | 4,784 m (15,696 ft) | 2002 | 171 km |
| Pululahua | Caldera | 3,356 m (11,010 ft) | 290 | 176 km |
| Atacazo | Stratovolcano | 4,463 m (14,642 ft) | -320 | 180 km |
| Cuicocha | Caldera | 3,246 m (10,650 ft) | 650 | 180 km |
| Chachimbiro | Stratovolcano | 4,106 m (13,471 ft) | -3740 | 187 km |
| Illiniza | Stratovolcano | 5,248 m (17,218 ft) | Unknown | 192 km |
| Mojanda | Stratovolcano(es) | 4,263 m (13,986 ft) | Unknown | 194 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 78°F (25°C) | 9.1 in | |
| February | 78°F (26°C) | 9.6 in | |
| March | 79°F (26°C) | 10.2 in | Warmest, Wettest |
| April | 79°F (26°C) | 8.4 in | |
| May | 78°F (26°C) | 5.6 in | |
| June | 77°F (25°C) | 5.4 in | |
| July | 76°F (25°C) | 2.4 in | |
| August | 76°F (24°C) | 1.4 in | Driest |
| September | 76°F (24°C) | 1.8 in | Coldest |
| October | 76°F (25°C) | 2.0 in | |
| November | 76°F (25°C) | 1.4 in | |
| December | 77°F (25°C) | 2.8 in |
San Gregorio has a seasonal temperature swing of 3°F / from 76°F in September to 79°F in March. Total annual precipitation is 60.1 inches, with March being the wettest month (10.2") and August the driest (1.4").