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San Marcos, Costa Rica
Full City Profile
4,255
Population
239/sq mi density
4,708 ft
Elevation
1,435 meters
70°F
Avg Temperature
21°C
San Marcos enjoys a temperate climate with an average annual temperature of 70°F (21°C). Winters average 70°F in January while summers reach 71°F in July. The area gets 154 sunny days per year. Annual precipitation totals 108.9 inches. The area receives 0.0 inches of snow annually.
Temperature
70°F Jan (21°C)
71°F Jul (22°C)
| Annual Average | 70.4°F |
| 30% above US avg | |
| January Average | 70°F (21°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 154 days/yr |
Geography
| Elevation | 4,708 ft (1,435 m) |
| Area | 17.8 sq mi (46.0 km²) |
| Population Density | 239/sq mi |
| Coordinates | 9.6601°N, 84.0203°W |
| Timezone | America/Costa_Rica |
Precipitation & Snow
Air Quality
Tsunami History
13 tsunamis recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1991 | LIMON, PANDORA | Earthquake | 3.0 m | 90 | 104 km |
| 1990 | COSTA RICA | Earthquake | 1.0 m | — | 85 km |
| 1941 | COSTA RICA-PANAMA | Earthquake | 0.2 m | 6 | 140 km |
| 2012 | COSTA RICA | Earthquake | 0.2 m | 2 | 150 km |
| 1983 | COSTA RICA | Earthquake | 0.1 m | 6 | 149 km |
| 1941 | COSTA RICA-PANAMA | Earthquake | 0.1 m | — | 129 km |
| 1952 | COSTA RICA-PANAMA | Earthquake | 0.1 m | — | 139 km |
| 2019 | IRAZU VOLCANO | Explosion | — | — | 40 km |
| 1924 | COSTA RICA | Earthquake | — | — | 55 km |
| 1905 | GULF OF NICOYA | Earthquake | — | — | 75 km |
| 1822 | MATINA | Earthquake | — | — | 113 km |
| 1798 | MATINA | Earthquake | — | — | 137 km |
| 1746 | MATINA | Earthquake | — | — | 137 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
9 volcanoes within 200 km. Closest: Irazu (40 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Irazu | Stratovolcano | 3,432 m (11,260 ft) | 1994 | 40 km |
| Turrialba | Stratovolcano | 3,340 m (10,958 ft) | 2019 | 49 km |
| Barva | Complex | 2,906 m (9,534 ft) | -6050 | 54 km |
| Poas | Stratovolcano | 2,708 m (8,885 ft) | 2019 | 64 km |
| Platanar | Stratovolcano(es) | 2,267 m (7,438 ft) | Unknown | 81 km |
| Arenal | Stratovolcano | 1,670 m (5,479 ft) | 2010 | 116 km |
| Tenorio | Stratovolcano(es) | 1,916 m (6,286 ft) | Unknown | 157 km |
| Miravalles | Stratovolcano | 2,028 m (6,654 ft) | 1946 | 173 km |
| Rincon de la Vieja | Complex | 1,916 m (6,286 ft) | 2020 | 193 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 70°F (21°C) | 2.1 in | |
| February | 70°F (21°C) | 1.1 in | Driest |
| March | 72°F (22°C) | 1.6 in | |
| April | 72°F (22°C) | 4.8 in | Warmest |
| May | 72°F (22°C) | 13.0 in | |
| June | 71°F (21°C) | 12.9 in | |
| July | 71°F (22°C) | 10.4 in | |
| August | 71°F (21°C) | 13.3 in | |
| September | 70°F (21°C) | 15.2 in | |
| October | 70°F (21°C) | 17.7 in | Wettest |
| November | 69°F (21°C) | 11.5 in | |
| December | 69°F (21°C) | 5.2 in | Coldest |
San Marcos has a seasonal temperature swing of 3°F / from 69°F in December to 72°F in April. Total annual precipitation is 108.9 inches, with October being the wettest month (17.7") and February the driest (1.1").