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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…Departing Trieste, Italy on September 23, 2026, the HAL Cruises ship Oosterdam runs this 21-night Croatia, Greece & Istanbul Collectors' Voyage sailing. 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, Rijeka, Croatia, Split, Croatia, with 14 more along the way. Scroll the daily outlook below to pack smart for every port of call.
Trieste, Italy is a scheduled port of call on day 1 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: partially cloudy with highs near 72°F.
Rijeka, Croatia is a scheduled port of call on day 2 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: partially cloudy with highs near 70°F.
Split, Croatia is a scheduled port of call on day 3 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: partially cloudy with highs near 72°F.
Santorini, Greece is a scheduled port of call on day 4 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: clear with highs near 73°F.
Bodrum, Turkey is a scheduled port of call on day 5 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: clear with highs near 76°F.
Kusadasi, Turkey is a scheduled port of call on day 6 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: clear with highs near 82°F.
Istanbul, Turkey is a scheduled port of call on day 7 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: partially cloudy with highs near 72°F.
Piraeus, Greece is a scheduled port of call on day 8 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: partially cloudy with highs near 81°F.
Nafplion, Greece is a scheduled port of call on day 9 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: partially cloudy with highs near 72°F.
Alexandria, Egypt is a scheduled port of call on day 10 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: clear with highs near 87°F.
Istanbul, Turkey is a scheduled port of call on day 11 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: partially cloudy with highs near 70°F.
Haifa, Israel is a scheduled port of call on day 12 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: partially cloudy with highs near 86°F.
Kusadasi, Turkey is a scheduled port of call on day 13 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: partially cloudy with highs near 80°F.
Santorini, Greece is a scheduled port of call on day 14 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: partially cloudy with highs near 71°F.
Rhodes, Greece is a scheduled port of call on day 15 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: partially cloudy with highs near 75°F.
Chania, Crete is a scheduled port of call on day 16 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: partially cloudy with highs near 73°F.
Piraeus, Greece is a scheduled port of call on day 17 of the 21-night Croatia, Greece & Istanbul Collectors' Voyage cruise on Oosterdam. Expected weather: partially cloudy with highs near 79°F.
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