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Weather & Climate in Islay (Matarani), Peru
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Islay (Matarani) enjoys a temperate climate with an average annual temperature of 69°F (20°C). Winters average 73°F in January while summers reach 63°F in July / relatively mild seasonal variation. The area gets 360 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 2.2 inches (drier than the 38-inch national average). The city sits at an elevation of 128 feet.
Temperature
73°F Jan (23°C)
63°F Jul (17°C)
| Annual Average | 68.7°F |
| 27% above US avg | |
| January Average | 73°F (23°C) |
| July Average | 63°F (17°C) |
| Sunny Days | 360 days/yr |
Geography
| Elevation | 128 ft (39 m) |
| Area | 172.8 sq mi (447.7 km²) |
| Population Density | 28/sq mi |
| Coordinates | -16.9961°N, 72.1011°W |
| Timezone | America/Lima |
Precipitation & Snow
Air Quality
Earthquake History
804 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 | 61 km | 33 km |
| Apr 3, 1999 | 6 km SE of Camaná, Peru | M6.8 | 70 km | 87 km |
| Jun 26, 2001 | 34 km WSW of Pacocha, Peru | M6.7 | 96 km | 24 km |
| Oct 8, 1998 | 16 km SSE of Pucara, Peru | M6.2 | 123 km | 136 km |
| Jul 8, 2008 | 28 km E of Lluta, Peru | M6.2 | 119 km | 123 km |
| Jun 23, 2001 | 56 km SSW of Quilca, Peru | M6.1 | 61 km | 33 km |
| Jun 7, 2012 | 16 km S of Uñon, Peru | M6.1 | 129 km | 110 km |
| Jun 3, 2003 | 81 km SSW of Quilca, Peru | M6.0 | 85 km | 33 km |
| Jun 23, 2001 | 21 km S of Pacocha, Peru | M5.8 | 123 km | 33 km |
| Jan 27, 2004 | 31 km SE of El Algarrobal, Peru | M5.8 | 144 km | 57 km |
| Aug 3, 2000 | 59 km SSW of Punta de Bombón, Peru | M5.8 | 78 km | 33 km |
| Jun 23, 2001 | 44 km SSW of Mollendo, Peru | M5.8 | 45 km | 33 km |
| Jun 8, 1990 | 44 km S of Punta de Bombón, Peru | M5.7 | 71 km | 27 km |
| Jun 23, 2001 | 33 km SW of Pacocha, Peru | M5.6 | 110 km | 33 km |
| Jun 24, 2001 | 22 km WSW of Pacocha, Peru | M5.6 | 103 km | 33 km |
| Jun 24, 2001 | 48 km SSW of Punta de Bombón, Peru | M5.5 | 67 km | 33 km |
| Feb 7, 2007 | 22 km ESE of El Algarrobal, Peru | M5.5 | 135 km | 64 km |
| Apr 4, 1990 | 26 km SE of Urasqui, Peru | M5.5 | 130 km | 93 km |
| Jun 23, 2001 | 88 km SW of Islay (Matarani), Peru | M5.5 | 89 km | 33 km |
| Aug 15, 2016 | 11 km SW of Tapay, Peru | M5.5 | 150 km | 20 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 |
| 1715 | PERU | Earthquake | — | — | 142 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
6 volcanoes within 200 km. Closest: Chachani, Nevado (108 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Chachani, Nevado | Stratovolcano | 6,057 m (19,872 ft) | Unknown | 108 km |
| Huambo | Volcanic field | 4,550 m (14,928 ft) | -700 | 130 km |
| Sabancaya | Stratovolcano(es) | 5,960 m (19,554 ft) | 2020 | 137 km |
| Huaynaputina | Stratovolcano | 4,850 m (15,912 ft) | 1600 | 140 km |
| Andahua-Orcopampa | Pyroclastic cone(s) | 4,713 m (15,463 ft) | 1490 | 177 km |
| Tutupaca | Stratovolcano(es) | 5,801 m (19,032 ft) | 1802 | 184 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 73°F (23°C) | 0.0 in | Warmest, Wettest |
| February | 70°F (21°C) | 0.0 in | |
| March | 69°F (21°C) | 0.0 in | Driest |
| April | 67°F (20°C) | 0.0 in | |
| May | 65°F (19°C) | 0.0 in | |
| June | 63°F (17°C) | 0.0 in | |
| July | 63°F (17°C) | 0.0 in | |
| August | 62°F (17°C) | 0.0 in | Coldest |
| September | 64°F (18°C) | 0.0 in | |
| October | 65°F (18°C) | 0.0 in | |
| November | 66°F (19°C) | 0.0 in | |
| December | 68°F (20°C) | 0.0 in |
Islay (Matarani) has a seasonal temperature swing of 10°F / from 62°F in August to 73°F in January. Total annual precipitation is 0.2 inches, with January being the wettest month (0.0") and March the driest (0.0").