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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…Departing Marseille, France on September 26, 2026, the Costa Cruises ship Costa Diadema runs this 11-night Western Mediterranean from Marseilles 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 Marseille, France, Savona, Italy, Barcelona, Spain, with 7 more along the way. Scroll the daily outlook below to pack smart for every port of call.
Marseille, France is a scheduled port of call on day 1 of the 11-night Western Mediterranean from Marseilles cruise on Costa Diadema. Expected weather: partially cloudy with highs near 70°F.
Savona, Italy is a scheduled port of call on day 2 of the 11-night Western Mediterranean from Marseilles cruise on Costa Diadema. Expected weather: partially cloudy with highs near 73°F.
Barcelona, Spain is a scheduled port of call on day 3 of the 11-night Western Mediterranean from Marseilles cruise on Costa Diadema. Expected weather: partially cloudy with highs near 74°F.
Day 4 of 12 is a day at sea aboard Costa Diadema, cruising between ports on the Western Mediterranean from Marseilles itinerary.
Cadiz, Spain is a scheduled port of call on day 5 of the 11-night Western Mediterranean from Marseilles cruise on Costa Diadema. Expected weather: partially cloudy with highs near 76°F.
Lisbon, Portugal is a scheduled port of call on day 6 of the 11-night Western Mediterranean from Marseilles cruise on Costa Diadema. Expected weather: partially cloudy with highs near 74°F.
Lisbon, Portugal is a scheduled port of call on day 7 of the 11-night Western Mediterranean from Marseilles cruise on Costa Diadema. Expected weather: partially cloudy with highs near 74°F.
Gibraltar, UK is a scheduled port of call on day 8 of the 11-night Western Mediterranean from Marseilles cruise on Costa Diadema. Expected weather: partially cloudy with highs near 62°F.
Malaga, Spain is a scheduled port of call on day 9 of the 11-night Western Mediterranean from Marseilles cruise on Costa Diadema. Expected weather: partially cloudy with highs near 74°F.
Cartagena, Spain is a scheduled port of call on day 10 of the 11-night Western Mediterranean from Marseilles cruise on Costa Diadema. Expected weather: partially cloudy with highs near 75°F.
Day 11 of 12 is a day at sea aboard Costa Diadema, cruising between ports on the Western Mediterranean from Marseilles itinerary.
Marseille, France is a scheduled port of call on day 12 of the 11-night Western Mediterranean from Marseilles cruise on Costa Diadema. Expected weather: partially cloudy with highs near 68°F.
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