Costa Cruises · 14 nights
Costa Serena weather: 14-night cruise from San Antonio, December 8, 2026
The Costa Serena (Costa Cruises) leaves San Antonio on December 8, 2026 for a 14-night cruise, with stops in Puerto Montt, Puerto Chacabuco, Punta Arenas, Ushuaia, Puerto Madryn and Buenos Aires. It ends in Buenos Aires on December 22, 2026. Typical afternoon highs along the route run from 54°F to 84°F (12°C to 29°C), and 8 days are at sea, where seas are typically moderate (around 4 ft).
Open the interactive forecast for this sailing
This page shows typical conditions for these dates. The interactive forecast adds a live day-by-day forecast, wave heights and weather alerts as the sailing gets closer.
Day-by-day itinerary and typical weather
| Day | Port | High / low | Rain days | Wind | Typical seas |
|---|---|---|---|---|---|
| Day 1Tue, Dec 8 | San Antonio Embark | 69 / 54°F21 / 12°C | 3% | 12 mph20 km/h | – |
| Day 2Wed, Dec 9 | At sea | 66 / 52°F19 / 11°C | 17% | 10 mph15 km/h | 4 ft (1.3 m)Moderate; rougher days up to 6 ft |
| Day 3Thu, Dec 10 | Puerto Montt | 62 / 49°F17 / 10°C | 31% | 13 mph21 km/h | – |
| Day 4Fri, Dec 11 | At sea | 64 / 48°F18 / 9°C | 39% | 8 mph12 km/h | 1 ft (0.4 m)Smooth; rougher days up to 2 ft |
| Day 5Sat, Dec 12 | Puerto Chacabuco | 65 / 46°F18 / 8°C | 46% | 7 mph12 km/h | – |
| Day 6Sun, Dec 13 | At sea | 60 / 44°F15 / 7°C | 44% | 11 mph18 km/h | 2 ft (0.5 m)Smooth; rougher days up to 2 ft |
| Day 7Mon, Dec 14 | Punta Arenas | 55 / 42°F13 / 6°C | 41% | 22 mph35 km/h | – |
| Day 8Tue, Dec 15 | Ushuaia | 54 / 40°F12 / 5°C | 49% | 14 mph22 km/h | – |
| Day 9Wed, Dec 16 | At sea | 70 / 51°F21 / 11°C | 28% | 13 mph21 km/h | 1 ft (0.4 m)Smooth; rougher days up to 2 ft |
| Day 10Thu, Dec 17 | At sea | 70 / 51°F21 / 11°C | 28% | 13 mph21 km/h | 1 ft (0.4 m)Smooth; rougher days up to 2 ft |
| Day 11Fri, Dec 18 | At sea | 70 / 51°F21 / 11°C | 28% | 13 mph21 km/h | 1 ft (0.4 m)Smooth; rougher days up to 2 ft |
| Day 12Sat, Dec 19 | Puerto Madryn | 83 / 60°F29 / 15°C | 9% | 21 mph33 km/h | – |
| Day 13Sun, Dec 20 | At sea | 83 / 64°F29 / 18°C | 14% | 13 mph21 km/h | 2 ft (0.6 m)Slight; rougher days up to 3 ft |
| Day 14Mon, Dec 21 | At sea | 83 / 64°F29 / 18°C | 14% | 13 mph21 km/h | 2 ft (0.6 m)Slight; rougher days up to 3 ft |
| Day 15Tue, Dec 22 | Buenos Aires Disembark | 84 / 68°F29 / 20°C | 19% | 15 mph24 km/h | – |
Seas are significant wave height, the average of the highest third of waves. What that means on board.
Ports on this cruise
- Puerto MonttWeather by month
- Puerto ChacabucoWeather by month
- Punta ArenasWeather by month
- UshuaiaWeather by month
- Puerto MadrynWeather by month
- Buenos AiresWeather by month
- San AntonioWeather by month
More Costa Serena sailings
- December 27, 2026: 9 nights from Buenos Aires
- January 5, 2027: 5 nights from Buenos Aires
- January 14, 2027: 8 nights from Buenos Aires
- January 22, 2027: 9 nights from Buenos Aires
- January 31, 2027: 8 nights from Buenos Aires