10-Night Cruise on Norwegian VivaGreek Isles from Istanbul to Venice (Ravenna): Santorini & Athens - Weather

The Norwegian Viva sails a 10-night Greek Isles from Istanbul to Venice (Ravenna): Santorini & Athens itinerary with Norwegian Cruise Line (NCL), departing Istanbul, Turkey on September 5, 2027. 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 Istanbul, Turkey, Kusadasi, Turkey, Santorini, Greece, with 8 more along the way. Use the day-by-day forecast below to plan what to pack for each stop.

1. Day 1 — Sunday, Sep 5, 2027 — Istanbul, Turkey

   Istanbul, Turkey is a scheduled port of call on day 1 of the 10-night Greek Isles from Istanbul to Venice (Ravenna): Santorini & Athens cruise on Norwegian Viva. Expected weather: partially cloudy with highs near 80°F.

2. Day 2 — Monday, Sep 6, 2027 — Kusadasi, Turkey

   Kusadasi, Turkey is a scheduled port of call on day 2 of the 10-night Greek Isles from Istanbul to Venice (Ravenna): Santorini & Athens cruise on Norwegian Viva. Expected weather: clear with highs near 90°F.

3. Day 3 — Tuesday, Sep 7, 2027 — Santorini, Greece

   Santorini, Greece is a scheduled port of call on day 3 of the 10-night Greek Isles from Istanbul to Venice (Ravenna): Santorini & Athens cruise on Norwegian Viva. Expected weather: clear with highs near 76°F.

4. Day 4 — Wednesday, Sep 8, 2027 — Mykonos, Greece

   Mykonos, Greece is a scheduled port of call on day 4 of the 10-night Greek Isles from Istanbul to Venice (Ravenna): Santorini & Athens cruise on Norwegian Viva. Expected weather: clear with highs near 75°F.

5. Day 5 — Thursday, Sep 9, 2027 — Piraeus, Greece

   Piraeus, Greece is a scheduled port of call on day 5 of the 10-night Greek Isles from Istanbul to Venice (Ravenna): Santorini & Athens cruise on Norwegian Viva. Expected weather: clear with highs near 89°F.

6. Day 6 — Friday, Sep 10, 2027 — Katakolon, Greece

   Katakolon, Greece is a scheduled port of call on day 6 of the 10-night Greek Isles from Istanbul to Venice (Ravenna): Santorini & Athens cruise on Norwegian Viva. Expected weather: partially cloudy with highs near 81°F.

7. Day 7 — Saturday, Sep 11, 2027 — Corfu, Greece

   Corfu, Greece is a scheduled port of call on day 7 of the 10-night Greek Isles from Istanbul to Venice (Ravenna): Santorini & Athens cruise on Norwegian Viva. Expected weather: partially cloudy with highs near 77°F.

8. Day 8 — Sunday, Sep 12, 2027 — Dubrovnik, Croatia

   Dubrovnik, Croatia is a scheduled port of call on day 8 of the 10-night Greek Isles from Istanbul to Venice (Ravenna): Santorini & Athens cruise on Norwegian Viva. Expected weather: partially cloudy with highs near 78°F.

9. Day 9 — Monday, Sep 13, 2027 — Kotor, Montenegro

   Kotor, Montenegro is a scheduled port of call on day 9 of the 10-night Greek Isles from Istanbul to Venice (Ravenna): Santorini & Athens cruise on Norwegian Viva. Expected weather: partially cloudy with highs near 79°F.

10. Day 10 — Tuesday, Sep 14, 2027 — Split, Croatia

    Split, Croatia is a scheduled port of call on day 10 of the 10-night Greek Isles from Istanbul to Venice (Ravenna): Santorini & Athens cruise on Norwegian Viva. Expected weather: partially cloudy with highs near 76°F.

11. Day 11 — Wednesday, Sep 15, 2027 — Ravenna, Italy

    Ravenna, Italy is a scheduled port of call on day 11 of the 10-night Greek Isles from Istanbul to Venice (Ravenna): Santorini & Athens cruise on Norwegian Viva. Expected weather: partially cloudy with highs near 77°F.