11-Night Cruise on OosterdamAdriatic Antiquities: Croatia, Greek Isles & Istanbul - Weather

The Oosterdam sails a 11-night Adriatic Antiquities: Croatia, Greek Isles & Istanbul itinerary with Holland America Line (HAL), departing Trieste, Italy on September 21, 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 Trieste, Italy, Split, Croatia, Dubrovnik, Croatia, with 7 more along the way. Use the day-by-day forecast below to plan what to pack for each stop.

1. Day 1 — Tuesday, Sep 21, 2027 — Trieste, Italy

   Trieste, Italy is a scheduled port of call on day 1 of the 11-night Adriatic Antiquities: Croatia, Greek Isles & Istanbul cruise on Oosterdam. Expected weather: partially cloudy with highs near 72°F.

2. Day 2 — Wednesday, Sep 22, 2027 — Split, Croatia

   Split, Croatia is a scheduled port of call on day 2 of the 11-night Adriatic Antiquities: Croatia, Greek Isles & Istanbul cruise on Oosterdam. Expected weather: partially cloudy with highs near 74°F.

3. Day 3 — Thursday, Sep 23, 2027 — Dubrovnik, Croatia

   Dubrovnik, Croatia is a scheduled port of call on day 3 of the 11-night Adriatic Antiquities: Croatia, Greek Isles & Istanbul cruise on Oosterdam. Expected weather: partially cloudy with highs near 75°F.

4. Day 4 — Friday, Sep 24, 2027 — At Sea

   Day 4 of 12 is a day at sea aboard Oosterdam, cruising between ports on the Adriatic Antiquities: Croatia, Greek Isles & Istanbul itinerary.

5. Day 5 — Saturday, Sep 25, 2027 — Santorini, Greece

   Santorini, Greece is a scheduled port of call on day 5 of the 11-night Adriatic Antiquities: Croatia, Greek Isles & Istanbul cruise on Oosterdam. Expected weather: clear with highs near 74°F.

6. Day 6 — Sunday, Sep 26, 2027 — Mykonos, Greece

   Mykonos, Greece is a scheduled port of call on day 6 of the 11-night Adriatic Antiquities: Croatia, Greek Isles & Istanbul cruise on Oosterdam. Expected weather: clear with highs near 72°F.

7. Day 7 — Monday, Sep 27, 2027 — Kos, Greece

   Kos, Greece is a scheduled port of call on day 7 of the 11-night Adriatic Antiquities: Croatia, Greek Isles & Istanbul cruise on Oosterdam. Expected weather: clear with highs near 75°F.

8. Day 8 — Tuesday, Sep 28, 2027 — Kusadasi, Turkey

   Kusadasi, Turkey is a scheduled port of call on day 8 of the 11-night Adriatic Antiquities: Croatia, Greek Isles & Istanbul cruise on Oosterdam. Expected weather: clear with highs near 83°F.

9. Day 9 — Wednesday, Sep 29, 2027 — Istanbul, Turkey

   Istanbul, Turkey is a scheduled port of call on day 9 of the 11-night Adriatic Antiquities: Croatia, Greek Isles & Istanbul cruise on Oosterdam. Expected weather: partially cloudy with highs near 72°F.

10. Day 10 — Thursday, Sep 30, 2027 — Istanbul, Turkey

    Istanbul, Turkey is a scheduled port of call on day 10 of the 11-night Adriatic Antiquities: Croatia, Greek Isles & Istanbul cruise on Oosterdam. Expected weather: partially cloudy with highs near 72°F.

11. Day 11 — Friday, Oct 1, 2027 — At Sea

    Day 11 of 12 is a day at sea aboard Oosterdam, cruising between ports on the Adriatic Antiquities: Croatia, Greek Isles & Istanbul itinerary.

12. Day 12 — Saturday, Oct 2, 2027 — Piraeus, Greece

    Piraeus, Greece is a scheduled port of call on day 12 of the 11-night Adriatic Antiquities: Croatia, Greek Isles & Istanbul cruise on Oosterdam. Expected weather: partially cloudy with highs near 82°F.