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Weather & Climate in San Martin, Peru
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Martin has a warm climate with an average annual temperature of 79°F (26°C). Winters average 81°F in January while summers reach 78°F in July / relatively mild seasonal variation. The area gets 355 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 46.0 inches (wetter than the 38-inch national average). The city sits at an elevation of 115 feet.
Temperature
81°F Jan (27°C)
78°F Jul (26°C)
| Annual Average | 78.8°F |
| 46% above US avg | |
| January Average | 81°F (27°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 355 days/yr |
Geography
| Elevation | 115 ft (35 m) |
| Area | 40.4 sq mi (104.6 km²) |
| Population Density | 3,219/sq mi |
| Coordinates | -5.1859°N, 80.6693°W |
| Timezone | America/Lima |
Precipitation & Snow
Air Quality
Earthquake History
236 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.3.
| Mar 15, 2014 | 16 km W of Sechura, Peru | M6.3 | 55 km | 29 km |
| Aug 12, 2013 | 96 km WSW of Paita, Peru | M6.2 | 141 km | 10 km |
| Jul 30, 2021 | 7 km E of Sullana, Peru | M6.2 | 31 km | 34 km |
| Feb 15, 2009 | near the coast of northern Peru | M6.1 | 78 km | 21 km |
| Mar 20, 1991 | 27 km SSW of Sechura, Peru | M6.0 | 72 km | 35 km |
| Apr 21, 2002 | 34 km SW of Sechura, Peru | M5.9 | 78 km | 33 km |
| Jun 30, 1997 | 11 km NNW of La Breita, Peru | M5.8 | 118 km | 33 km |
| Mar 26, 2009 | 59 km WSW of Sechura, Peru | M5.8 | 95 km | 10 km |
| May 22, 2000 | 5 km WNW of Máncora, Peru | M5.8 | 130 km | 33 km |
| Aug 15, 1997 | 44 km SSW of Sechura, Peru | M5.7 | 89 km | 33 km |
| Jun 5, 2017 | Peru-Ecuador border region | M5.6 | 129 km | 49 km |
| Mar 29, 1991 | 22 km NE of Máncora, Peru | M5.6 | 139 km | 38 km |
| Nov 30, 1995 | 107 km WSW of Sechura, Peru | M5.6 | 144 km | 33 km |
| Jan 20, 1990 | 73 km SW of Sechura, Peru | M5.5 | 117 km | 26 km |
| Jun 19, 2011 | 48 km SSW of Sechura, Peru | M5.5 | 93 km | 10 km |
| May 8, 2025 | 12 km NNW of Cañaveral, Peru | M5.4 | 150 km | 45 km |
| Apr 3, 2012 | 5 km ENE of Piura, Peru | M5.4 | 10 km | 64 km |
| Aug 3, 2014 | 24 km NE of Máncora, Peru | M5.4 | 143 km | 16 km |
| Jun 24, 2005 | 43 km SSW of Sechura, Peru | M5.3 | 88 km | 25 km |
| Jan 26, 2014 | 25 km WNW of Cañaveral, Peru | M5.3 | 150 km | 11 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 81°F (27°C) | 0.3 in | Warmest |
| February | 80°F (27°C) | 0.4 in | |
| March | 80°F (27°C) | 0.8 in | Wettest |
| April | 78°F (26°C) | 0.2 in | |
| May | 74°F (24°C) | 0.0 in | |
| June | 71°F (22°C) | 0.0 in | |
| July | 78°F (26°C) | 0.0 in | |
| August | 68°F (20°C) | 0.0 in | Coldest |
| September | 69°F (20°C) | 0.0 in | Driest |
| October | 70°F (21°C) | 0.0 in | |
| November | 71°F (22°C) | 0.0 in | |
| December | 75°F (24°C) | 0.1 in |
San Martin has a seasonal temperature swing of 13°F / from 68°F in August to 81°F in January. Total annual precipitation is 1.9 inches, with March being the wettest month (0.8") and September the driest (0.0").