San Juan, Peru

Full City Profile

78,153 Population 40/sq mi density

325 ft Elevation 99 meters

79°F Avg Temperature 26°C

San Juan has a warm climate with an average annual temperature of 79°F (26°C). Winters average 79°F in January while summers reach 78°F in July. The area gets 138 sunny days per year. Annual precipitation totals 109.1 inches. The area receives 0.0 inches of snow annually.

Temperature

79°F Jan (26°C) 78°F Jul (25°C)

Annual Average	79.1°F
	46% above US avg
January Average	79°F (26°C)
July Average	78°F (25°C)
Sunny Days	138 days/yr

Geography

Elevation	325 ft (99 m)
Area	1,949.0 sq mi (5,047.8 km²)
Population Density	40/sq mi
Coordinates	-3.7761°N, 73.2814°W
Timezone	America/Lima

Precipitation & Snow

Annual Rainfall 109.1"

187% above US avg

Snowfall 0.0"

Wettest Month (Apr) 11.65"

Driest Month (Jul) 5.79"

Air Quality

Earthquake History

4 earthquakes (M2.5+) within 150 km since 1990. Strongest: M5.2. Most recent: M5.2 on Jan 8, 2019.

Jan 8, 2019	48 km WSW of Nauta, Peru	M5.2	123 km
Jul 6, 2004	75 km NE of Iquitos, Peru	M4.6	80 km
Mar 21, 2001	125 km W of San Juan, Peru	M4.3	126 km
Aug 9, 2017	83 km W of San Juan, Peru	M4.2	84 km

Source: USGS (M2.5+, 1990–2025)

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	79°F (26°C)	11.1 in
February	80°F (26°C)	9.5 in
March	79°F (26°C)	10.9 in
April	79°F (26°C)	11.7 in	Wettest
May	79°F (26°C)	10.2 in
June	78°F (26°C)	7.3 in
July	78°F (25°C)	5.8 in	Coldest, Driest
August	78°F (26°C)	6.3 in
September	79°F (26°C)	7.2 in
October	80°F (27°C)	8.7 in
November	80°F (27°C)	9.5 in	Warmest
December	80°F (27°C)	10.9 in

San Juan has a seasonal temperature swing of 2°F / from 78°F in July to 80°F in November. Total annual precipitation is 109.1 inches, with April being the wettest month (11.7") and July the driest (5.8").

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