MyCruiseForecast

Costa Cruises · 3 nights

Costa Diadema weather: 3-night cruise from Itajaí, November 25, 2026

The Costa Diadema (Costa Cruises) leaves Itajaí on November 25, 2026 for a 3-night cruise, with stops in Santos (Sao Paulo). It returns to Itajaí on November 28, 2026. Typical afternoon highs along the route run from 78°F to 81°F (26°C to 27°C), and 1 day is at sea, where seas are typically slight (around 4 ft).

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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

Typical conditions for each date (2022–2025 climate record, ECMWF). Sea-day figures are approximate, blended from the ports on either side. Not a forecast.
DayPortHigh / lowRain daysWindTypical seas
Day 1Wed, Nov 25Itajaí Embark78 / 67°F26 / 19°C63%11 mph18 km/h–
Day 2Thu, Nov 26At sea80 / 69°F26 / 20°C57%8 mph13 km/h4 ft (1.2 m)Slight; rougher days up to 6 ft
Day 3Fri, Nov 27Santos (Sao Paulo)81 / 70°F27 / 21°C52%10 mph16 km/h–
Day 4Sat, Nov 28Itajaí Disembark78 / 67°F26 / 19°C63%11 mph18 km/h–

Seas are significant wave height, the average of the highest third of waves, on the Douglas sea state scale. What that means on board.

Ports on this cruise

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