Since late January, Santorini and nearby islands have experienced significant undersea seismic activity, with over 20,000 tremors recorded. The strongest reached magnitude 5.3, prompting evacuations, states of emergency, school closures and access restrictions.

Seismic activity has decreased since mid-February and restrictions have gradually eased. However, controlled access measures remain in place in areas such as Fira, Oia, Ammoudi Bay and Athinios Port. The epicentres are concentrated in a 30km (18.6 miles) undersea zone between Santorini and Amorgos. While a volcanic eruption is not expected, the fault zone remains active and stronger quakes, potentially up to magnitude 6, remain possible.

What to Expect:

Although seismic activity has decreased, with fewer noticeable tremors since mid-February, the fault zone between Santorini, Amorgos, Anafi and Ios remains active. Experts caution that a larger quake could still occur, potentially triggering rockslides or small tsunami-like waves if the fault fully ruptures, possibly also affecting nearby islands like Astypalaia.