San Lorenzo Island (Peru) Island

Largest Peruvian island in Callao Bay

Off Callao near Lima, San Lorenzo Island is the region's largest island; boat trips bring birdwatchers, fishermen and visitors interested in maritime history and coastal wildlife.

Main image

San Lorenzo Island (Peru) at a Glance#

Address: Isla San Lorenzo, Callao Region, Peru

How to Get to San Lorenzo Island (Peru)#

The island sits off the port of Callao (Lima’s seaport). Access requires permission from Peruvian authorities and is typically arranged via official tours or research permits; there are no public ferries.

Tips for Visiting San Lorenzo Island (Peru)#

  • Most of the island is restricted because of military installations - verify permissions well in advance with Callao port authorities
  • If a one-day visit is arranged, bring sunscreen and shade: there's little shelter and the sun off the Pacific is intense
  • Bring a certified guide; unofficial landings are discouraged and sometimes illegal

Best Time to Visit San Lorenzo Island (Peru)#

Visits are rare and weather-dependent; the driest months (southern summer) generally offer the most stable seas, but many parts of the island remain under military control year-round.

Southern summer
Dec-Mar · 22-28°C
Warmer seas and calmer weather windows; also the busiest season for any permitted excursions.
Southern winter
Jun-Aug · 16-20°C
Cooler, breezier conditions; clearer light for photography but fewer visits allowed.

Weather & Climate near San Lorenzo Island (Peru)#

Climate

San Lorenzo Island (Peru)'s climate is classified as Hot Desert - Hot Desert climate with warm summers (peaking in February) and mild winters (coldest in August). Temperatures range from 13°C to 26°C. Very dry conditions with minimal rainfall with a pronounced dry season.

Air Quality: AQI 62 Moderate
Temperature & Rainfall
Temperature Range
26°
Warmest Month
13°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - 19° - 24° 22° 2 mm - - 4.4 m/s - -
February - 19° - 26° 22° 1 mm - - 4.1 m/s - -
March - 19° - 25° 22° 1 mm - - 4.0 m/s - -
April - 17° - 24° 20° 2 mm - - 3.8 m/s - -
May - 16° - 21° 18° 3 mm - - 3.4 m/s - -
June - 14° - 20° 17° 2 mm - - 3.2 m/s - -
July - 13° - 18° 16° 2 mm - - 3.2 m/s - -
August - 13° - 18° 15° 2 mm - - 3.5 m/s - -
September - 13° - 18° 16° 1 mm - - 3.9 m/s - -
October - 14° - 20° 17° 0 mm - - 4.1 m/s - -
November - 15° - 21° 18° 0 mm - - 4.3 m/s - -
December - 17° - 23° 20° 0 mm - - 4.4 m/s - -