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Weather & Climate in Omas, Peru
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Omas enjoys a temperate climate with an average annual temperature of 69°F (21°C). Winters average 70°F in January while summers reach 68°F in July / relatively mild seasonal variation. The area gets 363 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 12.6 inches (drier than the 38-inch national average). The city sits at an elevation of 5,308 feet.
Temperature
70°F Jan (21°C)
68°F Jul (20°C)
| Annual Average | 69.3°F |
| 28% above US avg | |
| January Average | 70°F (21°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 363 days/yr |
Geography
| Elevation | 5,308 ft (1,618 m) |
| Area | 59.7 sq mi (154.7 km²) |
| Population Density | 4/sq mi |
| Coordinates | -12.5167°N, 76.2833°W |
| Timezone | America/Lima |
Precipitation & Snow
Air Quality
Earthquake History
327 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M8.0.
| Aug 15, 2007 | 41 km SW of San Vicente de Cañete, Peru | M8.0 | 103 km | 39 km |
| Apr 18, 1993 | 15 km SE of Lachaqui, Peru | M6.3 | 100 km | 106 km |
| May 16, 1992 | 4 km E of San Clemente, Peru | M6.1 | 130 km | 57 km |
| Feb 2, 2009 | 40 km WNW of Pisco, Peru | M6.0 | 122 km | 21 km |
| Aug 18, 2007 | 7 km NNW of Paracas, Peru | M6.0 | 143 km | 30 km |
| Aug 17, 2007 | 44 km WNW of Pisco, Peru | M5.9 | 126 km | 49 km |
| Jun 23, 2021 | 11 km WSW of Mala, Peru | M5.9 | 52 km | 50 km |
| Aug 19, 2007 | 45 km WNW of Pisco, Peru | M5.8 | 128 km | 11 km |
| Aug 16, 2007 | 38 km SW of San Vicente de Cañete, Peru | M5.8 | 99 km | 34 km |
| Sep 22, 2010 | 6 km ENE of Chincha Alta, Peru | M5.7 | 100 km | 50 km |
| May 8, 2003 | 90 km WSW of Chilca, Peru | M5.7 | 137 km | 33 km |
| Jan 7, 2022 | 6 km NW of Cocachacra, Peru | M5.6 | 79 km | 96 km |
| Aug 16, 2007 | 22 km SSW of San Vicente de Cañete, Peru | M5.6 | 85 km | 40 km |
| Jun 15, 2025 | 37 km WSW of Callao, Peru | M5.6 | 132 km | 40 km |
| Jan 23, 1990 | 4 km WSW of Cuenca, Peru | M5.6 | 132 km | 104 km |
| Aug 16, 2007 | 43 km WNW of Pisco, Peru | M5.6 | 123 km | 36 km |
| Apr 21, 2001 | 51 km WNW of Pisco, Peru | M5.6 | 122 km | 39 km |
| Oct 1, 1996 | 19 km SSW of Chilca, Peru | M5.6 | 60 km | 62 km |
| May 28, 2003 | 33 km SSW of Santiago de Surco, Peru | M5.6 | 97 km | 43 km |
| Aug 19, 2007 | 32 km WNW of Pisco, Peru | M5.6 | 126 km | 35 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
7 tsunamis recorded within 500 km. Highest wave on record: 24.0 m (79 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1746 | CENTRAL PERU | Earthquake | 24.0 m | 5,941 | 115 km |
| 2007 | S. PERU | Earthquake | 10.1 m | 596 | 103 km |
| 1865 | CENTRAL PERU | Earthquake | 2.0 m | 5 | 106 km |
| 1806 | CENTRAL PERU | Earthquake | 1.0 m | — | 100 km |
| 1878 | CENTRAL PERU | Unknown | — | 5 | 97 km |
| 1860 | CENTRAL PERU | Earthquake | — | — | 100 km |
| 1687 | S. PERU | Earthquake | — | 5,000 | 112 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 70°F (21°C) | 1.7 in | Warmest |
| February | 59°F (15°C) | 2.8 in | |
| March | 58°F (15°C) | 3.0 in | Wettest |
| April | 57°F (14°C) | 0.5 in | |
| May | 55°F (13°C) | 0.0 in | |
| June | 52°F (11°C) | 0.0 in | Coldest, Driest |
| July | 68°F (20°C) | 0.0 in | |
| August | 52°F (11°C) | 0.0 in | |
| September | 54°F (12°C) | 0.0 in | |
| October | 55°F (13°C) | 0.2 in | |
| November | 56°F (14°C) | 0.2 in | |
| December | 58°F (14°C) | 0.9 in |
Omas has a seasonal temperature swing of 18°F / from 52°F in June to 70°F in January. Total annual precipitation is 9.2 inches, with March being the wettest month (3.0") and June the driest (0.0").