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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…Join Princess Cruises's Diamond Princess for a 18-night voyage on the Grand Circle Japan route, setting out from Yokohama, Japan on October 1, 2026. It's a classic Asia cruise. Travelers sailing in October can generally expect cooler, off-season conditions. Ports of call include Yokohama, Japan, Toba, Japan, Kobe/Osaka, Japan, with 12 more along the way. The forecasts below break the weather down port by port.
Yokohama, Japan is a scheduled port of call on day 1 of the 18-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 75°F.
Toba, Japan is a scheduled port of call on day 2 of the 18-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 76°F.
Kobe/Osaka, Japan is a scheduled port of call on day 3 of the 18-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 77°F.
Kochi, Japan is a scheduled port of call on day 4 of the 18-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 78°F.
Hiroshima, Japan is a scheduled port of call on day 5 of the 18-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 79°F.
Day 6 of 19 is a day at sea aboard Diamond Princess, cruising between ports on the Grand Circle Japan itinerary.
Busan, South Korea is a scheduled port of call on day 7 of the 18-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 70°F.
Nagasaki, Japan is a scheduled port of call on day 8 of the 18-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 79°F.
Day 9 of 19 is a day at sea aboard Diamond Princess, cruising between ports on the Grand Circle Japan itinerary.
Yokohama, Japan is a scheduled port of call on day 10 of the 18-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 73°F.
Day 11 of 19 is a day at sea aboard Diamond Princess, cruising between ports on the Grand Circle Japan itinerary.
Akita, Japan is a scheduled port of call on day 12 of the 18-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 67°F.
Toyama, Japan is a scheduled port of call on day 13 of the 18-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 61°F.
Tsuruga, Japan is a scheduled port of call on day 14 of the 18-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 70°F.
Sakaiminato, Japan is a scheduled port of call on day 15 of the 18-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 69°F.
Busan, South Korea is a scheduled port of call on day 16 of the 18-night Grand Circle Japan cruise on Diamond Princess.
Nagasaki, Japan is a scheduled port of call on day 17 of the 18-night Grand Circle Japan cruise on Diamond Princess.
Day 18 of 19 is a day at sea aboard Diamond Princess, cruising between ports on the Grand Circle Japan itinerary.
Yokohama, Japan is a scheduled port of call on day 19 of the 18-night Grand Circle Japan cruise on Diamond Princess.
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