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Íos Lighthouse

Fl White 4s🇬🇷Municipality of Ios, GROperational

Location & Light Range

About Íos Lighthouse

Also known as: Íos (Ákra Fanari)

The lighthouse on Íos, constructed in 1892, is a cylindrical stone tower standing 6 meters tall, painted white with a green dome. It rises from a 1-story keeper's house, with the light situated 33 meters above sea level. The light emits a single white flash every 4 seconds, visible for nearly 16 nautical miles. This structure marks the entrance to the island's natural harbor, guiding vessels in the Aegean Sea. The lighthouse has been restored and is now open for public visits.

Why it matters: The Íos lighthouse is significant for maritime traffic entering and exiting the island's natural harbor. Its unique design, with the tower rising directly from a small keeper's house, offers a distinctive architectural element.

Light & Optic

Characteristic Signature
Fl White 4s
Flash Type
Flashing
Light Color
White
Interval
4s
Raw Code
Fl W 4s
Focal Height
33m
Geographic Range
15.9NM

Construction & History

Year Built
1892

Significant events: restored and remains open to the public

References & Identifiers

Nearest Port
Ios(0.8 km)

Tower & Structure

Tower Height
6m
Tower Shape
cylindrical
Tower Color
white with a green dome
Material
stone

Structure: square cylindrical stone tower with lantern and gallery, rising from a small 1-story stone keeper's house

Location

City
Municipality of Ios
Country
🇬🇷Greece
Region
South Aegean
Sea Region
Located on the island of Íos, a larger island north of Santoríni and south of Páros and Náxos, at the end of a promontory marking the entrance to its beautiful natural harbor in the Aegean Sea.
Latitude
36.7149°
Longitude
25.2593°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Íos Lighthouse at night?+
Íos displays the characteristic Fl White 4s. Each lighthouse has a unique flash pattern published in the List of Lights, allowing mariners to positively identify it and distinguish it from other navigation aids in the area. The white color may indicate a specific sector or warning zone.
Which ports and harbors does Íos Lighthouse guide vessels into?+
Íos Lighthouse assists vessels approaching 5 nearby ports. The closest is Ios at 0.5 NM to the NE. Other ports served include Sikinos (6 NM WSW), Herakleia Kykladon (13.6 NM NE), Iraklia (13.7 NM NE), Schinousa Kykladon (15.2 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Íos Lighthouse still active and maintained?+
Yes, Íos Lighthouse is currently operational. It is actively maintained and continues to emit its characteristic light signal for marine navigation. Most modern lighthouses are automated and monitored remotely by the national maritime authority.
What shipping routes pass near Íos Lighthouse?+
Íos Lighthouse is located within the Mediterranean East-West corridor — a major trade route spanning the Mediterranean from Gibraltar to the Suez Canal. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Íos Lighthouse?+
You can track vessels near Íos Lighthouse in real time using MarineRadar. The platform shows live AIS positions of ships in the area, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page to open the live map centered on this lighthouse.