14-Night Cruise on Costa SerenaWorld Cruise from San Antonio | Santiago - Weather

The Costa Serena sails a 14-night World Cruise from San Antonio | Santiago itinerary with Costa Cruises, departing San Antonio, Chile on December 8, 2026. The route makes 8 scheduled stops. Travelers sailing in December can generally expect cooler, off-season conditions. Ports of call include San Antonio, Chile, Puerto Montt, Chile, Puerto Chacabuco, Chile, with 5 more along the way. Use the day-by-day forecast below to plan what to pack for each stop.

1. Day 1 — Tuesday, Dec 8, 2026 — San Antonio, Chile

   San Antonio, Chile is a scheduled port of call on day 1 of the 14-night World Cruise from San Antonio | Santiago cruise on Costa Serena. Expected weather: clear with highs near 79°F.

2. Day 2 — Wednesday, Dec 9, 2026 — At Sea

   Day 2 of 15 is a day at sea aboard Costa Serena, cruising between ports on the World Cruise from San Antonio | Santiago itinerary.

3. Day 3 — Thursday, Dec 10, 2026 — Puerto Montt, Chile

   Puerto Montt, Chile is a scheduled port of call on day 3 of the 14-night World Cruise from San Antonio | Santiago cruise on Costa Serena. Expected weather: partially cloudy with highs near 57°F.

4. Day 4 — Friday, Dec 11, 2026 — Puerto Chacabuco, Chile

   Puerto Chacabuco, Chile is a scheduled port of call on day 4 of the 14-night World Cruise from San Antonio | Santiago cruise on Costa Serena. Expected weather: partially cloudy with highs near 58°F.

5. Day 5 — Saturday, Dec 12, 2026 — At Sea

   Day 5 of 15 is a day at sea aboard Costa Serena, cruising between ports on the World Cruise from San Antonio | Santiago itinerary.

6. Day 6 — Sunday, Dec 13, 2026 — At Sea

   Day 6 of 15 is a day at sea aboard Costa Serena, cruising between ports on the World Cruise from San Antonio | Santiago itinerary.

7. Day 7 — Monday, Dec 14, 2026 — Punta Arenas, Chile

   Punta Arenas, Chile is a scheduled port of call on day 7 of the 14-night World Cruise from San Antonio | Santiago cruise on Costa Serena. Expected weather: partially cloudy with highs near 53°F.

8. Day 8 — Tuesday, Dec 15, 2026 — Ushuaia, Argentina

   Ushuaia, Argentina is a scheduled port of call on day 8 of the 14-night World Cruise from San Antonio | Santiago cruise on Costa Serena. Expected weather: partially cloudy with highs near 56°F.

9. Day 9 — Wednesday, Dec 16, 2026 — Ushuaia, Argentina

   Ushuaia, Argentina is a scheduled port of call on day 9 of the 14-night World Cruise from San Antonio | Santiago cruise on Costa Serena. Expected weather: partially cloudy with highs near 56°F.

10. Day 10 — Thursday, Dec 17, 2026 — At Sea

    Day 10 of 15 is a day at sea aboard Costa Serena, cruising between ports on the World Cruise from San Antonio | Santiago itinerary.

11. Day 11 — Friday, Dec 18, 2026 — At Sea

    Day 11 of 15 is a day at sea aboard Costa Serena, cruising between ports on the World Cruise from San Antonio | Santiago itinerary.

12. Day 12 — Saturday, Dec 19, 2026 — Puerto Madryn, Argentina

    Puerto Madryn, Argentina is a scheduled port of call on day 12 of the 14-night World Cruise from San Antonio | Santiago cruise on Costa Serena. Expected weather: partially cloudy with highs near 75°F.

13. Day 13 — Sunday, Dec 20, 2026 — At Sea

    Day 13 of 15 is a day at sea aboard Costa Serena, cruising between ports on the World Cruise from San Antonio | Santiago itinerary.

14. Day 14 — Monday, Dec 21, 2026 — At Sea

    Day 14 of 15 is a day at sea aboard Costa Serena, cruising between ports on the World Cruise from San Antonio | Santiago itinerary.

15. Day 15 — Tuesday, Dec 22, 2026 — Buenos Aires, Argentina

    Buenos Aires, Argentina is a scheduled port of call on day 15 of the 14-night World Cruise from San Antonio | Santiago cruise on Costa Serena. Expected weather: partially cloudy with highs near 81°F.