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Weather & Climate in San Mateo, Ecuador
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Mateo has a warm climate with an average annual temperature of 77°F (25°C). Winters average 77°F in January while summers reach 77°F in July / relatively mild seasonal variation. The area gets 343 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 29.7 inches (drier than the 38-inch national average). The city sits at an elevation of 62 feet.
Temperature
77°F Jan (25°C)
77°F Jul (25°C)
| Annual Average | 76.7°F |
| 42% above US avg | |
| January Average | 77°F (25°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 343 days/yr |
Geography
| Elevation | 62 ft (19 m) |
| Area | 23.4 sq mi (60.5 km²) |
| Population Density | 0/sq mi |
| Coordinates | -0.9596°N, 80.8106°W |
| Timezone | America/Guayaquil |
Precipitation & Snow
Air Quality
Earthquake History
326 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.2.
| Aug 4, 1998 | 3 km E of Bahía de Caráquez, Ecuador | M7.2 | 62 km | 33 km |
| Sep 2, 1990 | 34 km SW of Pedernales, Ecuador | M6.6 | 108 km | 14 km |
| Sep 28, 2000 | 45 km NNW of Bahía de Caráquez, Ecuador | M6.4 | 87 km | 23 km |
| Aug 5, 1996 | 24 km NNW of Salinas, Ecuador | M6.3 | 117 km | 33 km |
| Mar 31, 2019 | 31 km N of Santa Elena, Ecuador | M6.2 | 110 km | 18 km |
| Jan 28, 2005 | 51 km WSW of Manta, Ecuador | M6.2 | 41 km | 10 km |
| Jan 28, 2005 | 90 km WSW of Manta, Ecuador | M6.1 | 81 km | 10 km |
| Jan 24, 2005 | 23 km W of Jipijapa, Ecuador | M6.1 | 45 km | 17 km |
| Jan 21, 2005 | 21 km WSW of Montecristi, Ecuador | M6.0 | 20 km | 10 km |
| Apr 22, 2016 | 34 km NNW of Bahía de Caráquez, Ecuador | M6.0 | 82 km | 10 km |
| Jun 30, 2017 | 35 km NNW of Bahía de Caráquez, Ecuador | M6.0 | 83 km | 13 km |
| Apr 22, 2016 | 36 km NNW of Bahía de Caráquez, Ecuador | M5.9 | 83 km | 10 km |
| Apr 17, 2016 | 34 km NE of Bahía de Caráquez, Ecuador | M5.8 | 93 km | 24 km |
| Jan 24, 2005 | 37 km W of Jipijapa, Ecuador | M5.8 | 50 km | 10 km |
| Jan 30, 2005 | 43 km WNW of Manta, Ecuador | M5.7 | 34 km | 29 km |
| Apr 17, 2016 | 50 km NW of Bahía de Caráquez, Ecuador | M5.6 | 82 km | 10 km |
| Dec 16, 1996 | near the coast of Ecuador | M5.5 | 81 km | 33 km |
| Mar 31, 2019 | 34 km NNE of Santa Elena, Ecuador | M5.5 | 109 km | 19 km |
| Feb 17, 2005 | 50 km NNW of Salinas, Ecuador | M5.5 | 94 km | 10 km |
| Aug 4, 1991 | 23 km WNW of Manta, Ecuador | M5.5 | 13 km | 21 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1933 | ECUADOR | Earthquake | — | — | 118 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 77°F (25°C) | 3.5 in | |
| February | 78°F (25°C) | 5.0 in | |
| March | 78°F (26°C) | 5.3 in | Warmest, Wettest |
| April | 78°F (25°C) | 3.1 in | |
| May | 77°F (25°C) | 1.4 in | |
| June | 75°F (24°C) | 0.9 in | |
| July | 77°F (25°C) | 0.3 in | Driest |
| August | 74°F (23°C) | 0.3 in | Coldest |
| September | 74°F (23°C) | 0.3 in | |
| October | 74°F (24°C) | 0.3 in | |
| November | 75°F (24°C) | 0.3 in | |
| December | 76°F (24°C) | 0.7 in |
San Mateo has a seasonal temperature swing of 4°F / from 74°F in August to 78°F in March. Total annual precipitation is 21.4 inches, with March being the wettest month (5.3") and July the driest (0.3").