39-Night Cruise on Oceania SirenaSouthern Mediterranean Gems Istanbul to Lisbon - Weather

Departing Istanbul, Turkey on November 12, 2026, the Oceania Cruises ship Oceania Sirena runs this 39-night Southern Mediterranean Gems Istanbul to Lisbon sailing. It's a classic Mediterranean cruise. Travelers sailing in November can generally expect mild, changeable weather that can turn cool and wet. Ports of call include Istanbul, Turkey, Bozcaada, Mykonos, Greece, with 36 more along the way. Scroll the daily outlook below to pack smart for every port of call.

1. Day 1 — Thursday, Nov 12, 2026 — Istanbul, Turkey

   Istanbul, Turkey is a scheduled port of call on day 1 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 61°F.

2. Day 2 — Friday, Nov 13, 2026 — Bozcaada

   Bozcaada is a scheduled port of call on day 2 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 63°F.

3. Day 3 — Saturday, Nov 14, 2026 — Mykonos, Greece

   Mykonos, Greece is a scheduled port of call on day 3 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 64°F.

4. Day 4 — Sunday, Nov 15, 2026 — Piraeus, Greece

   Piraeus, Greece is a scheduled port of call on day 4 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 71°F.

5. Day 5 — Monday, Nov 16, 2026 — Gythion, Greece

   Gythion, Greece is a scheduled port of call on day 5 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 68°F.

6. Day 6 — Tuesday, Nov 17, 2026 — Katakolon, Greece

   Katakolon, Greece is a scheduled port of call on day 6 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 65°F.

7. Day 7 — Wednesday, Nov 18, 2026 — Igoumenitsa, Greece

   Igoumenitsa, Greece is a scheduled port of call on day 7 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 62°F.

8. Day 8 — Thursday, Nov 19, 2026 — Kotor, Montenegro

   Kotor, Montenegro is a scheduled port of call on day 8 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 60°F.

9. Day 9 — Friday, Nov 20, 2026 — Dubrovnik, Croatia

   Dubrovnik, Croatia is a scheduled port of call on day 9 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 62°F.

10. Day 10 — Saturday, Nov 21, 2026 — Zadar, Croatia

    Zadar, Croatia is a scheduled port of call on day 10 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 59°F.

11. Day 11 — Sunday, Nov 22, 2026 — Venice, Italy

    Venice, Italy is a scheduled port of call on day 11 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 54°F.

12. Day 12 — Monday, Nov 23, 2026 — Koper, Slovenia

    Koper, Slovenia is a scheduled port of call on day 12 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 55°F.

13. Day 13 — Tuesday, Nov 24, 2026 — Rijeka, Croatia

    Rijeka, Croatia is a scheduled port of call on day 13 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 52°F.

14. Day 14 — Wednesday, Nov 25, 2026 — Split, Croatia

    Split, Croatia is a scheduled port of call on day 14 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 59°F.

15. Day 15 — Thursday, Nov 26, 2026 — Bari, Italy

    Bari, Italy is a scheduled port of call on day 15 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 61°F.

16. Day 16 — Friday, Nov 27, 2026 — Corfu, Greece

    Corfu, Greece is a scheduled port of call on day 16 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

17. Day 17 — Saturday, Nov 28, 2026 — Crotone, Italy

    Crotone, Italy is a scheduled port of call on day 17 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

18. Day 18 — Sunday, Nov 29, 2026 — La Valletta, Malta

    La Valletta, Malta is a scheduled port of call on day 18 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

19. Day 19 — Monday, Nov 30, 2026 — Messina, Sicily

    Messina, Sicily is a scheduled port of call on day 19 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

20. Day 20 — Tuesday, Dec 1, 2026 — Naples, Italy

    Naples, Italy is a scheduled port of call on day 20 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

21. Day 21 — Wednesday, Dec 2, 2026 — Civitavecchia, Italy

    Civitavecchia, Italy is a scheduled port of call on day 21 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

22. Day 22 — Thursday, Dec 3, 2026 — Bastia, Corsica

    Bastia, Corsica is a scheduled port of call on day 22 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

23. Day 23 — Friday, Dec 4, 2026 — Livorno, Italy

    Livorno, Italy is a scheduled port of call on day 23 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

24. Day 24 — Saturday, Dec 5, 2026 — La Spezia, Italy

    La Spezia, Italy is a scheduled port of call on day 24 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

25. Day 25 — Sunday, Dec 6, 2026 — Toulon, France

    Toulon, France is a scheduled port of call on day 25 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

26. Day 26 — Monday, Dec 7, 2026 — Palamos, Spain

    Palamos, Spain is a scheduled port of call on day 26 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

27. Day 27 — Tuesday, Dec 8, 2026 — Palma De Mallorca, Spain

    Palma De Mallorca, Spain is a scheduled port of call on day 27 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

28. Day 28 — Wednesday, Dec 9, 2026 — Barcelona, Spain

    Barcelona, Spain is a scheduled port of call on day 28 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

29. Day 29 — Thursday, Dec 10, 2026 — Alicante, Spain

    Alicante, Spain is a scheduled port of call on day 29 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

30. Day 30 — Friday, Dec 11, 2026 — Almeria, Spain

    Almeria, Spain is a scheduled port of call on day 30 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

31. Day 31 — Saturday, Dec 12, 2026 — Gibraltar, UK

    Gibraltar, UK is a scheduled port of call on day 31 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

32. Day 32 — Sunday, Dec 13, 2026 — Casablanca, Morocco

    Casablanca, Morocco is a scheduled port of call on day 32 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

33. Day 33 — Monday, Dec 14, 2026 — Agadir, Morocco

    Agadir, Morocco is a scheduled port of call on day 33 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

34. Day 34 — Tuesday, Dec 15, 2026 — Arrecife, Canary Islands

    Arrecife, Canary Islands is a scheduled port of call on day 34 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

35. Day 35 — Wednesday, Dec 16, 2026 — Gran Canaria, Canary Islands

    Gran Canaria, Canary Islands is a scheduled port of call on day 35 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

36. Day 36 — Thursday, Dec 17, 2026 — Tenerife, Canary Islands

    Tenerife, Canary Islands is a scheduled port of call on day 36 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

37. Day 37 — Friday, Dec 18, 2026 — St Cruz De La Palma, Canary Islands

    St Cruz De La Palma, Canary Islands is a scheduled port of call on day 37 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

38. Day 38 — Saturday, Dec 19, 2026 — Funchal, Madeira

    Funchal, Madeira is a scheduled port of call on day 38 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.

39. Day 39 — Sunday, Dec 20, 2026 — At Sea

    Day 39 of 40 is a day at sea aboard Oceania Sirena, cruising between ports on the Southern Mediterranean Gems Istanbul to Lisbon itinerary.

40. Day 40 — Monday, Dec 21, 2026 — Lisbon, Portugal

    Lisbon, Portugal is a scheduled port of call on day 40 of the 39-night Southern Mediterranean Gems Istanbul to Lisbon cruise on Oceania Sirena.