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Puerto San Juan Light

Location: El Morro / Entrance to San Juan Harbor near San Juan, PR

Local Marine Forecast.

There are no active watches, warnings or advisories 

Latest Condiitions.

About Puerto San Juan Light


The location of the light is El Morro / Entrance to San Juan Harbor. The nearest city is San Juan, PR. The station was first established in 1846. The current lighthouse was first lit in 1908.

The lighthouse is a Moorish Revival style tower.

The tower has a flashing white light at a focal plane height of 181 ft above mean high water. The light has a nominal range of 24 nautical miles. The light has a period of 40 seconds.

Open to the Public?: Grounds Only    Active?: Yes

Identification number: 3-30735 (U.S.)

Also known as Castillo San Felipe del Morro Lighthouse. The first Castillo San Felipe del Morro Lighthouse was built in 1846 and exhibited a light using five parabolic reflectors. In 1876, a new octagonal iron tower was constructed atop the walls of the fort . The tower was hit by U.S. artillery fire in the Puerto Rican Campaign of the Spanish–American War on May 12, 1898. The lighthouse was rebuilt in 1899 but developed structural problems and was demolished in 1906. The new and current lighthouse was constructed in 1908.

The light was automated in 1962. The light is obscured from 281° to 061°.

Light Pattern:
1.3s fl 18.7s ec.
1.3s fl 8.7s ec.
1.3s fl 8.7s ec.

A 'flashing' light is a light in which the total duration of light in a period is shorter than the total duration of darkness and the appearances of light (flashes) are usually of equal duration. So in the 40 second period, the light is on for less than 20 then off for more than 20.

Puerto San Juan Light was listed on the National Register of Historic Places on Oct. 22, 1981, reference number 81000693.

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