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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…Departing Piraeus, Greece on September 12, 2027, the Norwegian Cruise Line (NCL) ship Norwegian Gem runs this 7-night Greek Isles From Athens to Venice: Santorini, Olympia & Croatia sailing. It's a classic Mediterranean cruise. Travelers sailing in September can generally expect mild, changeable weather that can turn cool and wet. Ports of call include Piraeus, Greece, Santorini, Greece, Katakolon, Greece, with 5 more along the way. Scroll the daily outlook below to pack smart for every port of call.
Piraeus, Greece is a scheduled port of call on day 1 of the 7-night Greek Isles From Athens to Venice: Santorini, Olympia & Croatia cruise on Norwegian Gem. Expected weather: clear with highs near 88°F.
Santorini, Greece is a scheduled port of call on day 2 of the 7-night Greek Isles From Athens to Venice: Santorini, Olympia & Croatia cruise on Norwegian Gem. Expected weather: clear with highs near 76°F.
Katakolon, Greece is a scheduled port of call on day 3 of the 7-night Greek Isles From Athens to Venice: Santorini, Olympia & Croatia cruise on Norwegian Gem. Expected weather: partially cloudy with highs near 80°F.
Corfu, Greece is a scheduled port of call on day 4 of the 7-night Greek Isles From Athens to Venice: Santorini, Olympia & Croatia cruise on Norwegian Gem. Expected weather: partially cloudy with highs near 76°F.
Kotor, Montenegro is a scheduled port of call on day 5 of the 7-night Greek Isles From Athens to Venice: Santorini, Olympia & Croatia cruise on Norwegian Gem. Expected weather: partially cloudy with highs near 78°F.
Split, Croatia is a scheduled port of call on day 6 of the 7-night Greek Isles From Athens to Venice: Santorini, Olympia & Croatia cruise on Norwegian Gem. Expected weather: partially cloudy with highs near 74°F.
Koper, Slovenia is a scheduled port of call on day 7 of the 7-night Greek Isles From Athens to Venice: Santorini, Olympia & Croatia cruise on Norwegian Gem. Expected weather: partially cloudy with highs near 75°F.
Ravenna, Italy is a scheduled port of call on day 8 of the 7-night Greek Isles From Athens to Venice: Santorini, Olympia & Croatia cruise on Norwegian Gem. Expected weather: partially cloudy with highs near 76°F.
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