12-Night Cruise on Costa DiademaWestern Mediterranean from Barcelona - Weather

The Costa Diadema sails a 12-night Western Mediterranean from Barcelona itinerary with Costa Cruises, departing Barcelona, Spain on October 19, 2026. It's a classic Mediterranean cruise. Travelers sailing in October can generally expect mild, changeable weather that can turn cool and wet. Ports of call include Barcelona, Spain, Cadiz, Spain, Lisbon, Portugal, with 6 more along the way. Use the day-by-day forecast below to plan what to pack for each stop.

1. Day 1 — Monday, Oct 19, 2026 — Barcelona, Spain

   Barcelona, Spain is a scheduled port of call on day 1 of the 12-night Western Mediterranean from Barcelona cruise on Costa Diadema. Expected weather: partially cloudy with highs near 70°F.

2. Day 2 — Wednesday, Oct 21, 2026 — Cadiz, Spain

   Cadiz, Spain is a scheduled port of call on day 2 of the 12-night Western Mediterranean from Barcelona cruise on Costa Diadema. Expected weather: partially cloudy with highs near 72°F.

3. Day 3 — Thursday, Oct 22, 2026 — Lisbon, Portugal

   Lisbon, Portugal is a scheduled port of call on day 3 of the 12-night Western Mediterranean from Barcelona cruise on Costa Diadema. Expected weather: partially cloudy with highs near 70°F.

4. Day 4 — Saturday, Oct 24, 2026 — Gibraltar, UK

   Gibraltar, UK is a scheduled port of call on day 4 of the 12-night Western Mediterranean from Barcelona cruise on Costa Diadema. Expected weather: partially cloudy with highs near 58°F.

5. Day 5 — Sunday, Oct 25, 2026 — Malaga, Spain

   Malaga, Spain is a scheduled port of call on day 5 of the 12-night Western Mediterranean from Barcelona cruise on Costa Diadema. Expected weather: partially cloudy with highs near 71°F.

6. Day 6 — Monday, Oct 26, 2026 — Cartagena, Spain

   Cartagena, Spain is a scheduled port of call on day 6 of the 12-night Western Mediterranean from Barcelona cruise on Costa Diadema. Expected weather: partially cloudy with highs near 71°F.

7. Day 7 — Wednesday, Oct 28, 2026 — Marseille, France

   Marseille, France is a scheduled port of call on day 7 of the 12-night Western Mediterranean from Barcelona cruise on Costa Diadema. Expected weather: partially cloudy with highs near 65°F.

8. Day 8 — Thursday, Oct 29, 2026 — Savona, Italy

   Savona, Italy is a scheduled port of call on day 8 of the 12-night Western Mediterranean from Barcelona cruise on Costa Diadema. Expected weather: partially cloudy with highs near 67°F.

9. Day 9 — Saturday, Oct 31, 2026 — Barcelona, Spain

   Barcelona, Spain is a scheduled port of call on day 9 of the 12-night Western Mediterranean from Barcelona cruise on Costa Diadema. Expected weather: partially cloudy with highs near 68°F.