7-Night Cruise on Norwegian GemGreek Isles From Athens to Venice: Santorini, Olympia & Croatia - Weather

Join Norwegian Cruise Line (NCL)'s Norwegian Gem for a 7-night voyage on the Greek Isles From Athens to Venice: Santorini, Olympia & Croatia route, setting out from Piraeus, Greece on August 29, 2027. It's a classic Mediterranean cruise. Travelers sailing in August 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. The forecasts below break the weather down port by port.

1. Day 1 — Sunday, Aug 29, 2027 — Piraeus, Greece

   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 92°F.

2. Day 2 — Monday, Aug 30, 2027 — Santorini, Greece

   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 77°F.

3. Day 3 — Tuesday, Aug 31, 2027 — Katakolon, Greece

   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: clear with highs near 83°F.

4. Day 4 — Wednesday, Sep 1, 2027 — Corfu, Greece

   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: clear with highs near 79°F.

5. Day 5 — Thursday, Sep 2, 2027 — Kotor, Montenegro

   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 82°F.

6. Day 6 — Friday, Sep 3, 2027 — Zadar, Croatia

   Zadar, 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 77°F.

7. Day 7 — Saturday, Sep 4, 2027 — Koper, Slovenia

   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 80°F.

8. Day 8 — Sunday, Sep 5, 2027 — Ravenna, Italy

   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 81°F.