Greece in August: Weather, Crowds & What to Expect
Climate Map for August
Average temperature across Greece in August.
City Weather in August
| City | High | Low | Rain | UV | Feels |
|---|---|---|---|---|---|
| Athens | 32° | 22° | 7 mm | extreme | Warm |
| Thessaloniki | 32° | 19° | 25 mm | very high | Warm |
| Patras | 32° | 19° | 10 mm | very high | Warm |
| Piraeus | 32° | 23° | 8 mm | extreme | Hot |
| Larissa | 32° | 18° | 18 mm | very high | Warm |
| Peristeri | 32° | 22° | 7 mm | very high | Hot |
| Heraklion | 29° | 22° | 1 mm | very high | Warm |
High / low are average daily temperatures (°C). “Feels” reflects how hot or cold it feels, allowing for humidity.
Northern Greece (Macedonia & Thrace, including Thessaloniki and Halkidiki)
A crisp edge appears in October as daytime temperatures fall and deciduous hills near Kastoria and the Prespa Lakes turn colour. Rain becomes more frequent and can swell rivers, making some mountain tracks muddy - archaeological sites tend to be less crowded and museums warm and welcoming. Travelers should anticipate fewer ferry sailings to smaller islands and pack a rain layer for sudden wet spells and gusty winds.
Central Greece & Athens (Attica, Evia, Delphi, Parnassos)
August stays at the height of summer: full beaches, late-night dining, and hot, dry days that make early-morning or late-evening sightseeing sensible. Arachova and other mountain towns are full as Athenians escape the city; roads to coastal resorts can be congested. Pack breathable clothing and plan boat trips with awareness that sudden meltemi gusts can make white-capped seas uncomfortable for small craft.
Peloponnese (Nafplio, Olympia, Mani, Taygetos)
August remains peak-summer busy and very warm, with beaches at their liveliest and the sea offering daily escape. The Mani and Laconian coasts host festivals and local feasts, but small inland roads can be nearly deserted. If you prefer quieter travel, consider early mornings at archaeological sites and late-evening coastal walks; book lodging well in advance for coastal hotspots.
Ionian Islands (Corfu, Kefalonia, Zakynthos, Lefkada)
August remains hot and busy across the Ionian, with the highest visitor numbers and lively festival calendars in towns across the islands. Expect premium prices and crowded ferries; the sea provides almost constant relief and late-night dining keeps the tempo high. Travelers should reserve accommodations ahead and be wary of road congestion to popular beaches on holiday weekends.
Aegean Islands - Cyclades & Dodecanese (Mykonos, Santorini, Naxos, Rhodes, Kos)
August continues intense summer warmth and full occupancy across the islands; expect long waits at archeological sites and packed beaches at popular spots like Mykonos and Santorini. Sea conditions from the meltemi often create lively surf and whitecaps - great for wind sports but tricky for leisurely island-to-island hopping. If you want quieter experiences, choose smaller islands, early starts, or plan for evenings as the busiest time for dining and social life.
Crete (Chania, Heraklion, Agios Nikolaos, Samaria Gorge)
August remains at peak heat and activity; beaches and archaeological sites are busy and island roads can be congested around holiday weekends. Overnight temperatures stay warm in coastal towns, and many cultural events and concerts take place at historical sites. Travelers should plan early-morning hikes, secure reservations for popular restaurants, and be prepared for high-season prices and full ferries.