Santorini and Its Earthquakes: A Historical and Natural Perspective

Santorini is one of the most beautiful islands in Greece. It is famous for its white Cycladic-style buildings, the breathtaking sunsets at Oia, and its dynamic geological history. The island was formed by intense volcanic activity and has experienced numerous earthquakes throughout its existence. This is a natural phenomenon for a volcanic island.

Although the current seismic activity may cause concerns for visitors and residents alike, it is a temporary phenomenon that is observed daily by the scientific community in Greece and around the world. This is not the first time this phenomenon has occurred.

Santorini – The Volcanic Birth

Santorini is part of the Greek volcanic arc. This is a region with active volcanism in the southern part of the Aegean Sea. In this context, one of the most powerful eruptions took place around 1600 BCE, the famous Minoan eruption. This event shaped the calderas as we know them today.

This catastrophic event led to the collapse of the central part of the island and formed the large caldera that is now filled with seawater. The eruption was so significant that it had far-reaching consequences for the civilizations of the time.

Earthquakes Throughout Santorini’s History

Earthquakes have repeatedly struck Santorini over the centuries. The seismic activity in the region is primarily related to the movement of the African and Eurasian tectonic plates and not to volcanic activity.

The island has experienced several notable earthquakes, some of which have shaped its modern history. One of the most significant earthquakes in recent times occurred in 1956, a catastrophic earthquake with a magnitude of 7.5 Richter shaking Santorini. This event and the aftershocks caused extensive damage to existing buildings, particularly in Oia and Fira.

Many buildings were destroyed, and the inhabitants were forced to rebuild them, resulting in the architectural style that characterizes the island today. Since then, the island has remained seismically active, but thanks to advances in construction and monitoring, the risk to residents and visitors has been significantly reduced.

The Connection Between Volcanic Activity and Earthquakes in Santorini Island

The geological activity of Santorini is closely linked to its volcanic nature. The island is home to the still active Santorini Caldera, and in the past, there have always been minor eruptions, especially in the 20th century. Nea Kameni, the small volcanic island in the middle of the caldera, is a visible reminder of the continuous geological evolution of the region.

Earthquakes on Santorini are often associated with underground magma movements. However, this is not necessarily an indication of an imminent volcanic eruption. Scientists continuously monitor seismic activity and volcanic behavior to ensure that any significant developments are detected in time.

2025 Earthquake Activity in Santorini

Santorini Earthquakes – Current Situation and Safety Concerns

Since January 31, 2025, Santorini has been experiencing an unusual “earthquake swarm” that has resulted in significant concern. That includes hundreds of undersea earthquakes, with the strongest earthquake recorded on February 4, with a magnitude of 5.3 Richter.

While no casualties have been reported, the seismic activity has caused disruptions and minor damage because of

• Rock falls have occurred along the island’s coastal cliffs
• There has been minor damage to vulnerable buildings
• The frequency and intensity of the earthquakes are unusual, causing concern among scientists and authorities

Santorini Earthquakes – 2025 Latest Updates and Safety Information

Authorities have advised people to stay away from areas susceptible to rockslides and the Greek government has declared a state of emergency on Santorini due to the ongoing seismic activity. 

You can keep up to date whether you are a visitor or want to monitor the situation. Here are some essential resources to help you stay informed and safe.

Real-Time Earthquake Data

• The National Observatory of Athens, Geodynamic Institute provides live seismic reports and expert analysis. 

Visit: gein.noa.gr

Earthquake Safety Guidelines

• ​The Greek Civil Protection Agency offers official safety measures and preparedness tips.

Learn more at: Earthquakes | Υπουργείο Κλιματικής Κρίσης και Πολιτικής Προστασίας

Emergency Alerts (112 System)

• Greece’s 112 emergency alert system delivers real-time notifications and instructions during crises.

Find details: civilprotection.gov.gr/en/112

Official Announcements and Updates

• Stay informed with the latest press releases from the Greek Civil Protection Agency regarding the situation.

Read updates: civilprotection.gov.gr/en/deltia-tupou

The authorities recommend remaining vigilant, avoiding unstable structures and following official updates. By using the resources above, you can stay informed and take the necessary precautions to ensure your safety.

Shall I visit Santorini with my family in 2025?

We at Kids Love Greece are monitoring the situation in Santorini by consulting the official sources on a daily basis to keep you informed and ensure your safety. We hope the earthquake activity in Santorini is temporary and will soon slow down.

That being said, your safety is our top priority and we are at your disposal, if you would like to consider alternative travel plans in Greece, until the situation stabilizes.

Greece is full of equally amazing Greek islands and we are happy to recommend other incredible destinations that offer breathtaking scenery, rich history, and unforgettable experiences.

Let us help you find the perfect place for your family adventure!