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Weather & Climate in Ilo, Peru
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ilo enjoys a temperate climate with an average annual temperature of 67°F (19°C). Winters average 72°F in January while summers reach 62°F in July / relatively mild seasonal variation. The area gets 335 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 0.6 inches (drier than the 38-inch national average). The city sits at an elevation of 72 feet.
Temperature
72°F Jan (22°C)
62°F Jul (17°C)
| Annual Average | 66.9°F |
| 24% above US avg | |
| January Average | 72°F (22°C) |
| July Average | 62°F (17°C) |
| Sunny Days | 335 days/yr |
Geography
| Elevation | 72 ft (22 m) |
| Area | 114.1 sq mi (295.6 km²) |
| Population Density | 469/sq mi |
| Coordinates | -17.6319°N, 71.3411°W |
| Timezone | America/Lima |
Precipitation & Snow
Air Quality
Earthquake History
739 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.6.
| Jul 7, 2001 | 51 km SW of Punta de Bombón, Peru | M7.6 | 79 km | 33 km |
| May 24, 1991 | 13 km SSE of Chojata, Peru | M6.8 | 143 km | 128 km |
| Jun 26, 2001 | 34 km WSW of Pacocha, Peru | M6.7 | 35 km | 24 km |
| May 6, 2010 | 21 km S of Las Yaras, Peru | M6.2 | 97 km | 37 km |
| Jun 23, 2001 | 56 km SSW of Quilca, Peru | M6.1 | 147 km | 33 km |
| Feb 10, 1990 | 123 km S of Pacocha, Peru | M5.9 | 126 km | 34 km |
| Jul 13, 2005 | 13 km NE of Calana, Peru | M5.9 | 133 km | 80 km |
| Dec 15, 1991 | 14 km SSW of Totoral, Peru | M5.9 | 98 km | 104 km |
| Jun 23, 2001 | 21 km S of Pacocha, Peru | M5.8 | 23 km | 33 km |
| Aug 3, 2000 | 59 km SSW of Punta de Bombón, Peru | M5.8 | 67 km | 33 km |
| Jan 27, 2004 | 31 km SE of El Algarrobal, Peru | M5.8 | 37 km | 57 km |
| Jun 23, 2001 | 44 km SSW of Mollendo, Peru | M5.8 | 91 km | 33 km |
| Jun 8, 1990 | 44 km S of Punta de Bombón, Peru | M5.7 | 52 km | 27 km |
| Oct 25, 1996 | 9 km NE of Ticaco, Peru | M5.7 | 146 km | 116 km |
| Aug 26, 2003 | 20 km ESE of Torata, Peru | M5.7 | 88 km | 32 km |
| May 25, 2006 | 58 km SSE of Pacocha, Peru | M5.6 | 60 km | 35 km |
| Feb 20, 2003 | 73 km W of Arica, Chile | M5.6 | 97 km | 33 km |
| Jun 24, 2001 | 22 km WSW of Pacocha, Peru | M5.6 | 24 km | 33 km |
| Jun 23, 2001 | 33 km SW of Pacocha, Peru | M5.6 | 35 km | 33 km |
| Jun 23, 2001 | 88 km SW of Islay (Matarani), Peru | M5.5 | 138 km | 33 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
5 tsunamis recorded within 500 km. Highest wave on record: 18.0 m (59 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1868 | NORTHERN CHILE | Earthquake | 18.0 m | 25,000 | 114 km |
| 1604 | S. PERU | Earthquake | 5.0 m | 174 | 51 km |
| 1868 | NORTHERN CHILE | Earthquake | 0.2 m | - | 114 km |
| 1895 | NORTHERN CHILE | Earthquake | - | - | 55 km |
| 1715 | PERU | Earthquake | - | - | 68 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Tutupaca (123 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Tutupaca | Stratovolcano(es) | 5,801 m (19,032 ft) | 1802 | 123 km |
| Huaynaputina | Stratovolcano | 4,850 m (15,912 ft) | 1600 | 125 km |
| Yucamane | Stratovolcano(es) | 5,495 m (18,028 ft) | -1320 | 131 km |
| Chachani, Nevado | Stratovolcano | 6,057 m (19,872 ft) | Unknown | 162 km |
| Tacora | Stratovolcano(es) | 5,980 m (19,619 ft) | Unknown | 167 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 72°F (22°C) | 0.0 in | |
| February | 73°F (23°C) | 0.0 in | Warmest |
| March | 72°F (22°C) | 0.0 in | Driest |
| April | 69°F (21°C) | 0.0 in | |
| May | 66°F (19°C) | 0.0 in | |
| June | 63°F (17°C) | 0.0 in | |
| July | 62°F (17°C) | 0.1 in | |
| August | 62°F (16°C) | 0.1 in | Coldest, Wettest |
| September | 63°F (17°C) | 0.1 in | |
| October | 65°F (18°C) | 0.0 in | |
| November | 67°F (20°C) | 0.0 in | |
| December | 70°F (21°C) | 0.0 in |
Ilo has a seasonal temperature swing of 11°F / from 62°F in August to 73°F in February. Total annual precipitation is 0.6 inches, with August being the wettest month (0.1") and March the driest (0.0").