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San Juan, Costa Rica
Full City Profile
7,729
Population
267/sq mi density
3,576 ft
Elevation
1,090 meters
68°F
Avg Temperature
20°C
San Juan enjoys a temperate climate with an average annual temperature of 68°F (20°C). Winters average 67°F in January while summers reach 69°F in July. The area gets 171 sunny days per year. Annual precipitation totals 98.4 inches. The area receives 0.0 inches of snow annually.
Temperature
67°F Jan (20°C)
69°F Jul (20°C)
| Annual Average | 68.2°F |
| 26% above US avg | |
| January Average | 67°F (20°C) |
| July Average | 69°F (20°C) |
| Sunny Days | 171 days/yr |
Geography
| Elevation | 3,576 ft (1,090 m) |
| Area | 29.0 sq mi (75.1 km²) |
| Population Density | 267/sq mi |
| Coordinates | 10.1025°N, 84.3169°W |
| Timezone | America/Costa_Rica |
Precipitation & Snow
Air Quality
Tsunami History
8 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 | 144 km |
| 1950 | COSTA RICA-NICARAGUA | Earthquake | 2.0 m | — | 125 km |
| 1990 | COSTA RICA | Earthquake | 1.0 m | — | 53 km |
| 2012 | COSTA RICA | Earthquake | 0.2 m | 2 | 109 km |
| 1952 | COSTA RICA-PANAMA | Earthquake | 0.1 m | — | 98 km |
| 2019 | IRAZU VOLCANO | Explosion | — | — | 53 km |
| 1924 | COSTA RICA | Earthquake | — | — | 61 km |
| 1905 | GULF OF NICOYA | Earthquake | — | — | 49 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
10 volcanoes within 200 km. Closest: Poas (14 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Poas | Stratovolcano | 2,708 m (8,885 ft) | 2019 | 14 km |
| Platanar | Stratovolcano(es) | 2,267 m (7,438 ft) | Unknown | 23 km |
| Barva | Complex | 2,906 m (9,534 ft) | -6050 | 24 km |
| Irazu | Stratovolcano | 3,432 m (11,260 ft) | 1994 | 53 km |
| Arenal | Stratovolcano | 1,670 m (5,479 ft) | 2010 | 58 km |
| Turrialba | Stratovolcano | 3,340 m (10,958 ft) | 2019 | 61 km |
| Tenorio | Stratovolcano(es) | 1,916 m (6,286 ft) | Unknown | 99 km |
| Miravalles | Stratovolcano | 2,028 m (6,654 ft) | 1946 | 116 km |
| Rincon de la Vieja | Complex | 1,916 m (6,286 ft) | 2020 | 137 km |
| Orosi | Stratovolcano(es) | 1,659 m (5,443 ft) | Unknown | 160 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 67°F (20°C) | 0.9 in | Driest |
| February | 68°F (20°C) | 1.1 in | |
| March | 69°F (21°C) | 1.3 in | |
| April | 70°F (21°C) | 4.2 in | Warmest |
| May | 70°F (21°C) | 11.1 in | |
| June | 68°F (20°C) | 13.6 in | |
| July | 69°F (20°C) | 10.5 in | |
| August | 68°F (20°C) | 13.1 in | |
| September | 68°F (20°C) | 15.8 in | Wettest |
| October | 67°F (20°C) | 15.8 in | |
| November | 67°F (19°C) | 8.0 in | |
| December | 67°F (19°C) | 3.0 in | Coldest |
San Juan has a seasonal temperature swing of 4°F / from 67°F in December to 70°F in April. Total annual precipitation is 98.4 inches, with September being the wettest month (15.8") and January the driest (0.9").