Greek islands affected by floods
Greek islands affected by floods are mainly low-lying and river-fed islands where heavy autumn and winter storms overwhelm drainage. Corfu with flooding in Corfu Town and Agios Ioannis, Crete with floods in Heraklion, Chania, Agia Pelagia and Almyrida, Rhodes with floods in Rhodes Town, Faliraki and Lindos area, Euboea with severe floods in Vasilikos and Politika, Paros with flash floods in Parikia and Naoussa in 2025, Mykonos with floods in Mykonos Town, Zakynthos with floods in Laganas and town areas, Samos with floods in Karlovasi and Samos Town, Lesvos with floods in Mytilene, and Thassos with floods in Potos and Limenaria.
Known for short, intense flash floods from September to November when Mediterranean lows stall, with blocked culverts and rapid runoff from bare hillsides. Crete, Euboea, Corfu, Rhodes and Samos have rivers that can burst, while smaller Cycladic islands like Paros and Mykonos flood from urban runoff rather than rivers. Most summer visitors avoid floods, but autumn travelers should check forecasts as climate change has increased intense rainfall events in the Aegean.
| Island | Description |
|---|---|
| Paros | Fishing village Naoussa creek overflowed March 31 2025, nearly 40 vehicles carried into sea, one month's rainfall in two hours flooding businesses and homes. |
| Mykonos | Same storm front as Paros April 2025, flash floods hit island, schools preventively shut, roads flooded and property damaged. |
| Rhodes | Schools shut April 2025 during storm moving from Paros, strong winds and flooding, plus November flooding history in Dodecanese zone. |
| Crete | Flash flooding kills two in 2022 Agia Pelagia cars pushed into sea, heavy rainfall November 2020 flooding island, civil defence mobilised for Rhodes Karpathos Kastellorizo Kasos surrounding area. |
| Evia | Second largest island, Storms Daniel and Elias struck September 2023 central Greece and Evia over three weeks leaving 16 dead, highways and rail network damaged. |
| Kos | Schools shut April 2025 along with Paros Mykonos Rhodes during same storm front, flash flood risk in Dodecanese. |
| Kalymnos | Schools shut April 2025 during same Dodecanese storm system, flash flood prevention measures. |
| Symi | Schools shut April 2025 during same storm front, included in Dodecanese flood alert. |
| Tilos | Schools shut April 2025 during same storm front, Dodecanese flood alert. |
| Chios | Storm front moving to Chios Samos Ikaria April 1 2025 per Hellenic meteorological reports, heavy rainfall and roads flooded. |
| Samos | Same April 2025 storm front moving to Samos, roads flooded and autos swept away, plus Aegean island flood zone. |
| Ikaria | Same April 2025 storm front moving to Ikaria, heavy rainfall reported. |
| Karpathos | Civil defence warning included Karpathos during Crete flash floods October 2022, surrounding islands alert. |
| Kastellorizo | Civil defence warning included Kastellorizo during Crete flash floods October 2022. |
| Kasos | Civil defence warning included Kasos during Crete flash floods October 2022. |
| Lesbos | Third largest island, Eastern Aegean flood zone during severe weather mapping, flash floods in small streams expected. |
| Skiathos | Sporades included in severe weather mapping for flash floods, Boeotia Evia Sporades Halkidiki zone. |
| Skopelos | Sporades same zone as Skiathos, flash flood risk in small streams. |
Greek islands affected by floods are Crete, Rhodes, Corfu, Samos and Thassos — autumn winter flash floods
Greek islands affected by floods are big mountain islands with rivers and winter storms — not dry Cyclades. Crete most affected — November to February flash floods every year — Heraklion, Chania, Sitia, Ierapetra, Almyrida rivers overflow, roads cut, Balos and south coast landslides, 2022-2024 severe floods. Rhodes second — Rhodes Town, Ialysos, Faliraki, Lindos streams flood autumn storms — 2024-2025 heavy rain flooded airport, Old Town, 2023 Storm Daniel affected.
Corfu third — wettest Ionian — Corfu Town, Dassia, Benitses, Paleokastritsa road floods, Ropa Valley lake overflow, winter 2023-2024 roads closed. Samos fourth — Karlovasi Potami river floods, Vathy harbor overflow, mountain torrents Kerkis Ambelos, 2020 Samos earthquake plus flood. Thassos fifth — Emerald but mountain torrents — Potos, Limenaria, Theologos, Prinos rivers flood autumn, marble dust runoff.
Floods in Greek islands are flash floods from Mediterranean cyclones — Daniel, Elias, Bora — September to February, not summer.
Flood ranking — why Crete Rhodes Corfu flood most
Guide nuance: Greek islands affected by floods share — high mountain, narrow valleys, towns built on dry riverbeds, plus concrete over natural streams. Crete floods most because biggest island 3 mountain ranges 2456m White Mountains, 3 million olive groves but deforestation, rivers Geropotamos, Almyros, Ierapetra overflow fast, plus south coast gorges Samaria become torrents — Heraklion low area Ammoudara Giofyros always flood. Rhodes floods because mountain Attavyros 1216m, streams from interior to Rhodes Town flat, Faliraki Lindos roads riverbeds, plus 2023-2025 climate heavier autumn rain.
Corfu floods because wettest 1000mm rain, olive groves but clay soil, Ropa Valley, Nymfes valley, Corfu Town drainage old, Dassia Ipsos flood yearly. Samos floods because steep mountains Kerkis 1433m short distance to sea so water rushes, Potami waterfalls become torrent, Vathy harbor low, Karlovasi river. Thassos similar mountain 1200m pine but streams marble.
Extra Greek islands affected by floods: Euboea second largest island worst 2020 floods, Samos Ikaria Cyclades edge, Lesvos, Lemnos, Kefalonia 2020 Medicane Ianos flooded Assos Fiskardo, Lefkada Nydri, Zakynthos Laganas. Cyclades Mykonos Paros Santorini rarely flood but Paros Naousa 2025 flash flood. Safest from floods Cyclades Mykonos Naxos Milos driest. So order: Crete Heraklion Chania yearly, Rhodes Town Faliraki autumn, Corfu Town Dassia winter, Samos Karlovasi Vathy, Thassos Potos, Euboea bonus worst. Pick summer June to September no flood risk, avoid November February mountain islands low areas.
Sources
- https://www.terradaily.com/reports/Greek_tourist_islands_hit_by_flash_floods_Heartbreaking_floods_swamp_Australias_cattle_country_999.html | TerraDaily on schools shut Paros Mykonos Rhodes Kos Kalymnos Symi Tilos flash floods April 2025
- https://www.europarl.europa.eu/doceo/document/E-10-2025-001584_EN.html | European Parliament on devastating floods on Aegean islands Paros Mykonos Rhodes April 2025 lack of resilience
- https://www.telegrafi.com/en/Storm-damage-increases-in-Greece-Roads-partially-destroyed-ports-buried-by-rocks/ | Telegrafi on Paros Mykonos more rain in two hours than entire year storm swept cars into sea
- https://phys.org/news/2022-10-major-crete.html | Phys.org on major flooding in Crete kills two cars carried away Agia Pelagia civil defence Rhodes Karpathos Kastellorizo Kasos
- https://weather.com/news/weather/news/2023-09-28-greece-flood-risk-daniel-elias-evia | Weather.com on Storms Daniel and Elias struck central Greece and island of Evia September 2023 16 dead
- https://www.rsoe-edis.org/eventList/details/0/undefined | RSOE EDIS severe weather mapping Ionian Islands Western Epirus Evia Sporades Cyclades Eastern Aegean Dodecanese Western Southern Crete flash floods
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Last Updated on September 9, 2026 by admin