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Weather & Climate in Río Grande, Peru
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Río Grande enjoys a temperate climate with an average annual temperature of 64°F (18°C). Winters average 61°F in January while summers reach 66°F in July / relatively mild seasonal variation. The area gets 358 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 18.9 inches (drier than the 38-inch national average). The city sits at an elevation of 1,220 feet.
Temperature
61°F Jan (16°C)
66°F Jul (19°C)
| Annual Average | 64.0°F |
| 19% above US avg | |
| January Average | 61°F (16°C) |
| July Average | 66°F (19°C) |
| Sunny Days | 358 days/yr |
Geography
| Elevation | 1,220 ft (372 m) |
| Area | 241.8 sq mi (626.2 km²) |
| Population Density | 19/sq mi |
| Coordinates | -14.5160°N, 75.1993°W |
| Timezone | America/Lima |
Precipitation & Snow
Air Quality
Earthquake History
620 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.7.
| Nov 12, 1996 | 60 km SW of Changuillo, Peru | M7.7 | 74 km | 33 km |
| Jan 14, 2018 | 37 km W of Atiquipa, Peru | M7.1 | 149 km | 39 km |
| Jan 30, 2012 | 6 km ESE of Pampa de Tate, Peru | M6.4 | 61 km | 43 km |
| Aug 16, 2007 | 46 km WSW of Santiago, Peru | M6.4 | 103 km | 23 km |
| Apr 5, 1991 | 21 km ESE of Pampa de Tate, Peru | M6.3 | 46 km | 50 km |
| Mar 15, 2014 | 24 km SSW of Paracas, Peru | M6.1 | 129 km | 20 km |
| Nov 13, 1996 | 54 km WSW of Changuillo, Peru | M6.1 | 64 km | 33 km |
| Feb 9, 1997 | 68 km S of Paracas, Peru | M6.1 | 116 km | 33 km |
| May 23, 2010 | 4 km WNW of Sacsamarca, Peru | M6.1 | 112 km | 101 km |
| May 16, 1992 | 4 km E of San Clemente, Peru | M6.1 | 136 km | 57 km |
| Nov 13, 1996 | 29 km WSW of San Juan, Peru | M6.0 | 109 km | 33 km |
| Jul 1, 1991 | 50 km SSE of San Juan, Peru | M6.0 | 144 km | 21 km |
| Aug 16, 2007 | 46 km S of Paracas, Peru | M6.0 | 112 km | 35 km |
| Aug 18, 2007 | 7 km NNW of Paracas, Peru | M6.0 | 142 km | 30 km |
| May 17, 2025 | 5 km W of San Pedro, Peru | M5.9 | 117 km | 101 km |
| May 3, 2005 | central Peru | M5.9 | 77 km | 31 km |
| Feb 18, 2014 | 10 km ESE of Pampa de Tate, Peru | M5.9 | 58 km | 57 km |
| May 18, 2009 | 35 km SW of Acarí, Peru | M5.8 | 133 km | 23 km |
| Jun 28, 2007 | 41 km SW of Acarí, Peru | M5.8 | 133 km | 12 km |
| Aug 16, 2007 | 25 km W of Santiago, Peru | M5.8 | 87 km | 35 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 2.0 m (7 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1942 | S. PERU | Eruption + Earthquake | 2.0 m | 30 | 102 km |
| 1996 | S. PERU | Earthquake | 0.4 m | 14 | 74 km |
| 2018 | S. PERU | Earthquake | 0.2 m | — | 149 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 61°F (16°C) | 0.0 in | Coldest, Wettest |
| February | 74°F (24°C) | 0.0 in | Warmest |
| March | 74°F (23°C) | 0.0 in | |
| April | 71°F (22°C) | 0.0 in | Driest |
| May | 67°F (20°C) | 0.0 in | |
| June | 64°F (18°C) | 0.0 in | |
| July | 66°F (19°C) | 0.0 in | |
| August | 63°F (17°C) | 0.0 in | |
| September | 64°F (18°C) | 0.0 in | |
| October | 66°F (19°C) | 0.0 in | |
| November | 68°F (20°C) | 0.0 in | |
| December | 71°F (22°C) | 0.0 in |
Río Grande has a seasonal temperature swing of 13°F / from 61°F in January to 74°F in February. Total annual precipitation is 0.1 inches, with January being the wettest month (0.0") and April the driest (0.0").