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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…Departing Yokohama, Japan on September 5, 2026, the Princess Cruises ship Diamond Princess runs this 17-night Grand Circle Japan sailing. It's a classic Asia cruise. Travelers sailing in September can generally expect cooler, off-season conditions. Ports of call include Yokohama, Japan, Hakodate, Japan, Niigata, Japan, with 11 more along the way. Scroll the daily outlook below to pack smart for every port of call.
Yokohama, Japan is a scheduled port of call on day 1 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 83°F.
Hakodate, Japan is a scheduled port of call on day 2 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 73°F.
Niigata, Japan is a scheduled port of call on day 3 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 81°F.
Busan, South Korea is a scheduled port of call on day 4 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 75°F.
Nagasaki, Japan is a scheduled port of call on day 5 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 86°F.
Kagoshima, Japan is a scheduled port of call on day 6 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 86°F.
Kochi, Japan is a scheduled port of call on day 7 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 82°F.
Shimizu, Japan is a scheduled port of call on day 8 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 79°F.
Yokohama, Japan is a scheduled port of call on day 9 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 81°F.
Nagasaki, Japan is a scheduled port of call on day 10 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 84°F.
Busan, South Korea is a scheduled port of call on day 11 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 74°F.
Kochi, Japan is a scheduled port of call on day 12 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 80°F.
Shimizu, Japan is a scheduled port of call on day 13 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 77°F.
Yokohama, Japan is a scheduled port of call on day 14 of the 17-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 78°F.
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