14-Night Cruise on Oceania SirenaMediterranean Mosaic Istanbul to Rome - Weather

Join Oceania Cruises's Oceania Sirena for a 14-night voyage on the Mediterranean Mosaic Istanbul to Rome route, setting out from Istanbul, Turkey on August 27, 2026. 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 Istanbul, Turkey, Istanbul, Turkey, Izmir, Turkey, with 10 more along the way. The forecasts below break the weather down port by port.

1. Day 1 — Thursday, Aug 27, 2026 — Istanbul, Turkey

   Istanbul, Turkey is a scheduled port of call on day 1 of the 14-night Mediterranean Mosaic Istanbul to Rome cruise on Oceania Sirena.

2. Day 2 — Friday, Aug 28, 2026 — Istanbul, Turkey

   Istanbul, Turkey is a scheduled port of call on day 2 of the 14-night Mediterranean Mosaic Istanbul to Rome cruise on Oceania Sirena.

3. Day 3 — Saturday, Aug 29, 2026 — Izmir, Turkey

   Izmir, Turkey is a scheduled port of call on day 3 of the 14-night Mediterranean Mosaic Istanbul to Rome cruise on Oceania Sirena.

4. Day 4 — Sunday, Aug 30, 2026 — Santorini, Greece

   Santorini, Greece is a scheduled port of call on day 4 of the 14-night Mediterranean Mosaic Istanbul to Rome cruise on Oceania Sirena.

5. Day 5 — Monday, Aug 31, 2026 — Rhodes, Greece

   Rhodes, Greece is a scheduled port of call on day 5 of the 14-night Mediterranean Mosaic Istanbul to Rome cruise on Oceania Sirena.

6. Day 6 — Tuesday, Sep 1, 2026 — Iraklion, Greece

   Iraklion, Greece is a scheduled port of call on day 6 of the 14-night Mediterranean Mosaic Istanbul to Rome cruise on Oceania Sirena.

7. Day 7 — Wednesday, Sep 2, 2026 — At Sea

   Day 7 of 15 is a day at sea aboard Oceania Sirena, cruising between ports on the Mediterranean Mosaic Istanbul to Rome itinerary.

8. Day 8 — Thursday, Sep 3, 2026 — Dubrovnik, Croatia

   Dubrovnik, Croatia is a scheduled port of call on day 8 of the 14-night Mediterranean Mosaic Istanbul to Rome cruise on Oceania Sirena.

9. Day 9 — Friday, Sep 4, 2026 — Kotor, Montenegro

   Kotor, Montenegro is a scheduled port of call on day 9 of the 14-night Mediterranean Mosaic Istanbul to Rome cruise on Oceania Sirena.

10. Day 10 — Saturday, Sep 5, 2026 — Sarande, Albania

    Sarande, Albania is a scheduled port of call on day 10 of the 14-night Mediterranean Mosaic Istanbul to Rome cruise on Oceania Sirena.

11. Day 11 — Sunday, Sep 6, 2026 — Katakolon, Greece

    Katakolon, Greece is a scheduled port of call on day 11 of the 14-night Mediterranean Mosaic Istanbul to Rome cruise on Oceania Sirena.

12. Day 12 — Monday, Sep 7, 2026 — At Sea

    Day 12 of 15 is a day at sea aboard Oceania Sirena, cruising between ports on the Mediterranean Mosaic Istanbul to Rome itinerary.

13. Day 13 — Tuesday, Sep 8, 2026 — Giardini-Naxos, Sicily

    Giardini-Naxos, Sicily is a scheduled port of call on day 13 of the 14-night Mediterranean Mosaic Istanbul to Rome cruise on Oceania Sirena.

14. Day 14 — Wednesday, Sep 9, 2026 — Sorrento, Italy

    Sorrento, Italy is a scheduled port of call on day 14 of the 14-night Mediterranean Mosaic Istanbul to Rome cruise on Oceania Sirena.

15. Day 15 — Thursday, Sep 10, 2026 — Civitavecchia, Italy

    Civitavecchia, Italy is a scheduled port of call on day 15 of the 14-night Mediterranean Mosaic Istanbul to Rome cruise on Oceania Sirena.