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Weather & Climate in Casma, Peru
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Casma enjoys a temperate climate with an average annual temperature of 70°F (21°C). Winters average 63°F in January while summers reach 68°F in July / relatively mild seasonal variation. The area gets 364 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 3.5 inches (drier than the 38-inch national average). The city sits at an elevation of 161 feet.
Temperature
63°F Jan (17°C)
68°F Jul (20°C)
| Annual Average | 70.0°F |
| 30% above US avg | |
| January Average | 63°F (17°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 364 days/yr |
Geography
| Elevation | 161 ft (49 m) |
| Area | 691.4 sq mi (1,790.7 km²) |
| Population Density | 0/sq mi |
| Coordinates | -9.4747°N, 78.3017°W |
| Timezone | America/Lima |
Precipitation & Snow
Air Quality
Earthquake History
161 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.5.
| Feb 21, 1996 | 123 km WSW of Puerto Santa, Peru | M7.5 | 142 km | 10 km |
| Sep 23, 1995 | 81 km W of Paramonga, Peru | M6.5 | 138 km | 60 km |
| Jul 17, 1992 | 55 km SW of Huarmey, Peru | M5.8 | 104 km | 45 km |
| Jul 31, 1995 | 41 km SSW of Huarmey, Peru | M5.7 | 105 km | 59 km |
| Jan 3, 2010 | 16 km E of Huallanca, Peru | M5.7 | 99 km | 117 km |
| May 12, 1992 | 40 km W of Puerto Casma, Peru | M5.7 | 49 km | 63 km |
| May 11, 2002 | 55 km SW of Huarmey, Peru | M5.7 | 108 km | 47 km |
| Dec 14, 1990 | 70 km WSW of Puerto Casma, Peru | M5.6 | 78 km | 38 km |
| Jan 19, 1996 | 72 km WSW of Huarmey, Peru | M5.6 | 110 km | 34 km |
| Mar 31, 2019 | 117 km WSW of Puerto Casma, Peru | M5.5 | 125 km | 29 km |
| Jan 15, 2020 | 57 km WSW of Huarmey, Peru | M5.4 | 103 km | 36 km |
| Mar 30, 2013 | 68 km SW of Chimbote, Peru | M5.4 | 83 km | 35 km |
| Jun 2, 1996 | 128 km SW of Puerto Santa, Peru | M5.4 | 143 km | 33 km |
| Nov 5, 1998 | 36 km SW of Huarmey, Peru | M5.3 | 95 km | 51 km |
| Apr 1, 2015 | 30 km WNW of Paramonga, Peru | M5.3 | 121 km | 48 km |
| Jan 28, 2017 | 55 km WSW of Chimbote, Peru | M5.3 | 78 km | 50 km |
| Oct 18, 1992 | 25 km SW of Chimbote, Peru | M5.2 | 52 km | 48 km |
| Jan 15, 2019 | 44 km W of Puerto Santa, Peru | M5.2 | 102 km | 58 km |
| Mar 28, 2010 | 14 km SE of Huarmey, Peru | M5.2 | 80 km | 65 km |
| May 5, 2013 | 68 km SW of Chimbote, Peru | M5.1 | 87 km | 52 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
5 tsunamis recorded within 500 km. Highest wave on record: 23.0 m (75 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2010 | 513 LAKE, HUALCAN GLACIER | Meteorological | 23.0 m | 1 | 75 km |
| 1996 | N. PERU | Earthquake | 5.0 m | 12 | 142 km |
| 1966 | CENTRAL PERU | Earthquake | 3.0 m | 110 | 146 km |
| 1970 | N. PERU | Earthquake | 0.5 m | 66,794 | 63 km |
| 1678 | CENTRAL PERU | Earthquake | — | — | 93 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 63°F (17°C) | 1.0 in | |
| February | 68°F (20°C) | 1.2 in | |
| March | 67°F (20°C) | 1.5 in | Wettest |
| April | 66°F (19°C) | 0.5 in | |
| May | 64°F (18°C) | 0.1 in | |
| June | 62°F (17°C) | 0.0 in | Driest |
| July | 68°F (20°C) | 0.0 in | Warmest |
| August | 61°F (16°C) | 0.0 in | Coldest |
| September | 61°F (16°C) | 0.1 in | |
| October | 63°F (17°C) | 0.4 in | |
| November | 64°F (18°C) | 0.3 in | |
| December | 65°F (18°C) | 0.5 in |
Casma has a seasonal temperature swing of 7°F / from 61°F in August to 68°F in July. Total annual precipitation is 5.6 inches, with March being the wettest month (1.5") and June the driest (0.0").