9-Night Cruise on Costa SerenaSouth America from Montevideo - Weather

Departing Montevideo, Uruguay on December 28, 2026, the Costa Cruises ship Costa Serena runs this 9-night South America from Montevideo sailing. The route makes 7 scheduled stops. Travelers sailing in December can generally expect cooler, off-season conditions. Ports of call include Montevideo, Uruguay, Camboriu, Brazil, Ilha Grande, Brazil, with 4 more along the way. Scroll the daily outlook below to pack smart for every port of call.

1. Day 1 — Monday, Dec 28, 2026 — Montevideo, Uruguay

   Montevideo, Uruguay is a scheduled port of call on day 1 of the 9-night South America from Montevideo cruise on Costa Serena. Expected weather: partially cloudy with highs near 73°F.

2. Day 2 — Tuesday, Dec 29, 2026 — At Sea

   Day 2 of 10 is a day at sea aboard Costa Serena, cruising between ports on the South America from Montevideo itinerary.

3. Day 3 — Wednesday, Dec 30, 2026 — Camboriu, Brazil

   Camboriu, Brazil is a scheduled port of call on day 3 of the 9-night South America from Montevideo cruise on Costa Serena. Expected weather: partially cloudy with highs near 83°F.

4. Day 4 — Thursday, Dec 31, 2026 — Ilha Grande, Brazil

   Ilha Grande, Brazil is a scheduled port of call on day 4 of the 9-night South America from Montevideo cruise on Costa Serena. Expected weather: partially cloudy with highs near 71°F.

5. Day 5 — Friday, Jan 1, 2027 — Rio De Janeiro, Brazil

   Rio De Janeiro, Brazil is a scheduled port of call on day 5 of the 9-night South America from Montevideo cruise on Costa Serena. Expected weather: partially cloudy with highs near 78°F.

6. Day 6 — Saturday, Jan 2, 2027 — Ilhabela, Brazil

   Ilhabela, Brazil is a scheduled port of call on day 6 of the 9-night South America from Montevideo cruise on Costa Serena. Expected weather: partially cloudy with highs near 80°F.

7. Day 7 — Sunday, Jan 3, 2027 — At Sea

   Day 7 of 10 is a day at sea aboard Costa Serena, cruising between ports on the South America from Montevideo itinerary.

8. Day 8 — Monday, Jan 4, 2027 — At Sea

   Day 8 of 10 is a day at sea aboard Costa Serena, cruising between ports on the South America from Montevideo itinerary.

9. Day 9 — Tuesday, Jan 5, 2027 — Buenos Aires, Argentina

   Buenos Aires, Argentina is a scheduled port of call on day 9 of the 9-night South America from Montevideo cruise on Costa Serena. Expected weather: partially cloudy with highs near 82°F.

10. Day 10 — Wednesday, Jan 6, 2027 — Montevideo, Uruguay

    Montevideo, Uruguay is a scheduled port of call on day 10 of the 9-night South America from Montevideo cruise on Costa Serena. Expected weather: partially cloudy with highs near 74°F.