7-Night Cruise on Diamond PrincessJapan & Korea - Weather

The Diamond Princess sails a 7-night Japan & Korea itinerary with Princess Cruises, departing Yokohama, Japan on September 15, 2026. It's a classic Asia cruise. Travelers sailing in September can generally expect cooler, off-season conditions. Ports of call include Yokohama, Japan, Nagasaki, Japan, Busan, South Korea, with 3 more along the way. Use the day-by-day forecast below to plan what to pack for each stop.

1. Day 1 — Tuesday, Sep 15, 2026 — Yokohama, Japan

   Yokohama, Japan is a scheduled port of call on day 1 of the 7-night Japan & Korea cruise on Diamond Princess. Expected weather: partially cloudy with highs near 81°F.

2. Day 2 — Thursday, Sep 17, 2026 — Nagasaki, Japan

   Nagasaki, Japan is a scheduled port of call on day 2 of the 7-night Japan & Korea cruise on Diamond Princess. Expected weather: partially cloudy with highs near 84°F.

3. Day 3 — Friday, Sep 18, 2026 — Busan, South Korea

   Busan, South Korea is a scheduled port of call on day 3 of the 7-night Japan & Korea cruise on Diamond Princess. Expected weather: partially cloudy with highs near 74°F.

4. Day 4 — Sunday, Sep 20, 2026 — Kochi, Japan

   Kochi, Japan is a scheduled port of call on day 4 of the 7-night Japan & Korea cruise on Diamond Princess. Expected weather: partially cloudy with highs near 80°F.

5. Day 5 — Monday, Sep 21, 2026 — Shimizu, Japan

   Shimizu, Japan is a scheduled port of call on day 5 of the 7-night Japan & Korea cruise on Diamond Princess. Expected weather: partially cloudy with highs near 77°F.

6. Day 6 — Tuesday, Sep 22, 2026 — Yokohama, Japan

   Yokohama, Japan is a scheduled port of call on day 6 of the 7-night Japan & Korea cruise on Diamond Princess. Expected weather: partially cloudy with highs near 78°F.