🌡️ Extreme heat🔥 Wildfire

Natural hazards Greece — mainland & Peloponnese

Greece · total risk 69% (Very high) — our indicative estimate for a two-week stay in high season, based on 2017–2025.

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In our estimate, Greece — mainland & Peloponnese scores a total risk of 69% (very high). The main natural hazards for a summer holiday are extreme heat (55%) and wildfire (32%). Below you'll find the full profile, what happened in recent years, the best time to travel and practical travel advice.

Risk profile

🔥 Wildfire32% · Elevated

🌡️ Extreme heat55% · Very high

🌊 Flooding10% · Modest

⛈️ Storm / severe weather6% · Low

🌋 Seismic / volcanic7% · Low

Percentage = indicative chance that a two-week stay in high season is noticeably disrupted by this hazard. Based on 2017–2025, not an official forecast.

When is the best time to visit Greece — mainland & Peloponnese?

Peak-risk months: July – September

Jan12°

Feb15°

Mar17°

Apr20°

May26°

Jun32°

Jul35°

Aug35°

Sep29°

Oct24°

Nov19°

Dec15°

Avg. maximum temperature per month · climate normal 2019–2024 (ERA5)

What happened here? (2017–2025)

2018Mati disaster near Athens: 104 dead
2021Evia fire: the largest ever in Greece (50,000+ ha)
2023Storm Daniel: catastrophic flooding in Thessaly (billions in damage); simultaneously a record fire in Evros (96,000 ha)
2025Severe season: fires near Patras, Chios (beach evacuations by boat), Zakynthos and Crete

Travel advice

Greece combines virtually all the risks. Download the official 112 Greece app — it sends evacuation messages in English by region.

Frequently asked questions

Is it safe to travel to Greece — mainland & Peloponnese?

In our indicative estimate, Greece — mainland & Peloponnese scores a total risk of 69% (very high): the chance that a two-week stay in high season is noticeably disrupted by natural hazards — from smoke or heat stress to evacuation. This is based on the historical frequency in 2017–2025 and is not an official forecast. Most holidays pass without incident even in higher-risk areas; always check the live map and local warnings just before departure.

What is the biggest natural hazard in Greece — mainland & Peloponnese?

Extreme heat is the dominant risk at 55%, followed by wildfire (32%). Greece combines virtually all the risks. Download the official 112 Greece app — it sends evacuation messages in English by region.

When is the best time to visit Greece — mainland & Peloponnese?

Peak-risk months: July – September. Outside the peak months the risk of natural hazards is considerably lower, and it is also quieter and often cheaper.

Travel guides for this region

From heatwave to severe weather: thunderstorms and flooding on your summer holiday After days of oppressive heat, conditions in Central and Southeast Europe can change within hours: heavy thunderstorms, large hail, and flash floods. Where this occurs, why, and how to prepare your holiday accordingly. Mainland Greece: the land where almost every risk comes together Mainland Greece and the Peloponnese combine virtually all natural hazards: wildfire, heat, flooding and earthquakes. Yet a safe trip is well within reach with proper planning. Here's what you need to know — and which app to download.

Check the current risk for Greece — mainland & Peloponnese

Live fire danger (EFFIS/Copernicus), official warnings and the 7-day forecast.

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The percentages are indicative estimates based on the historical frequency and scale of events in 2017–2025 (EFFIS/Copernicus, EM-DAT, national weather services). They are not an official forecast. The live fire danger above is official, current data. Just before departure, consult the live map and local warnings.