14-Night Cruise on Costa SerenaWorld Cruise from San Antonio/Santiago de Chile - Weather

The Costa Serena sails a 14-night World Cruise from San Antonio/Santiago de Chile itinerary with Costa Cruises, departing San Antonio, Chile on December 8, 2026. The route makes 7 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 4 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 de Chile cruise on Costa Serena. Expected weather: clear with highs near 79°F.

2. Day 2 — Thursday, Dec 10, 2026 — Puerto Montt, Chile

   Puerto Montt, Chile is a scheduled port of call on day 2 of the 14-night World Cruise from San Antonio/Santiago de Chile cruise on Costa Serena. Expected weather: partially cloudy with highs near 57°F.

3. Day 3 — Friday, Dec 11, 2026 — Puerto Chacabuco, Chile

   Puerto Chacabuco, Chile is a scheduled port of call on day 3 of the 14-night World Cruise from San Antonio/Santiago de Chile cruise on Costa Serena. Expected weather: partially cloudy with highs near 58°F.

4. Day 4 — Monday, Dec 14, 2026 — Punta Arenas, Chile

   Punta Arenas, Chile is a scheduled port of call on day 4 of the 14-night World Cruise from San Antonio/Santiago de Chile cruise on Costa Serena. Expected weather: partially cloudy with highs near 53°F.

5. Day 5 — Tuesday, Dec 15, 2026 — Ushuaia, Argentina

   Ushuaia, Argentina is a scheduled port of call on day 5 of the 14-night World Cruise from San Antonio/Santiago de Chile cruise on Costa Serena. Expected weather: partially cloudy with highs near 56°F.

6. Day 6 — Saturday, Dec 19, 2026 — Puerto Madryn, Argentina

   Puerto Madryn, Argentina is a scheduled port of call on day 6 of the 14-night World Cruise from San Antonio/Santiago de Chile cruise on Costa Serena. Expected weather: partially cloudy with highs near 75°F.

7. Day 7 — Tuesday, Dec 22, 2026 — Buenos Aires, Argentina

   Buenos Aires, Argentina is a scheduled port of call on day 7 of the 14-night World Cruise from San Antonio/Santiago de Chile cruise on Costa Serena. Expected weather: partially cloudy with highs near 81°F.