19-Night Cruise on Diamond PrincessGrand Circle Japan - Weather

Join Princess Cruises's Diamond Princess for a 19-night voyage on the Grand Circle Japan route, setting out from Yokohama, Japan on July 2, 2026. It's a classic Asia cruise. Travelers sailing in July can generally expect cooler, off-season conditions. Ports of call include Yokohama, Japan, Nagasaki, Japan, Busan, South Korea, with 13 more along the way. The forecasts below break the weather down port by port.

1. Day 1 — Thursday, Jul 2, 2026 — Yokohama, Japan

   Yokohama, Japan is a scheduled port of call on day 1 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: rain, overcast with highs near 75°F.

2. Day 2 — Saturday, Jul 4, 2026 — Nagasaki, Japan

   Nagasaki, Japan is a scheduled port of call on day 2 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: rain, partially cloudy with highs near 82°F.

3. Day 3 — Sunday, Jul 5, 2026 — Busan, South Korea

   Busan, South Korea is a scheduled port of call on day 3 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: rain, overcast with highs near 79°F.

4. Day 4 — Monday, Jul 6, 2026 — Sakaiminato, Japan

   Sakaiminato, Japan is a scheduled port of call on day 4 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: rain, partially cloudy with highs near 76°F.

5. Day 5 — Tuesday, Jul 7, 2026 — Tsuruga, Japan

   Tsuruga, Japan is a scheduled port of call on day 5 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: rain, partially cloudy with highs near 80°F.

6. Day 6 — Wednesday, Jul 8, 2026 — Toyama, Japan

   Toyama, Japan is a scheduled port of call on day 6 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: overcast with highs near 83°F.

7. Day 7 — Thursday, Jul 9, 2026 — Akita, Japan

   Akita, Japan is a scheduled port of call on day 7 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: overcast with highs near 77°F.

8. Day 8 — Saturday, Jul 11, 2026 — Yokohama, Japan

   Yokohama, Japan is a scheduled port of call on day 8 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 86°F.

9. Day 9 — Sunday, Jul 12, 2026 — Toba, Japan

   Toba, Japan is a scheduled port of call on day 9 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 88°F.

10. Day 10 — Monday, Jul 13, 2026 — Kobe/Osaka, Japan

    Kobe/Osaka, Japan is a scheduled port of call on day 10 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 93°F.

11. Day 11 — Tuesday, Jul 14, 2026 — Kochi, Japan

    Kochi, Japan is a scheduled port of call on day 11 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 87°F.

12. Day 12 — Wednesday, Jul 15, 2026 — Hiroshima, Japan

    Hiroshima, Japan is a scheduled port of call on day 12 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: rain, partially cloudy with highs near 87°F.

13. Day 13 — Friday, Jul 17, 2026 — Busan, South Korea

    Busan, South Korea is a scheduled port of call on day 13 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: overcast with highs near 88°F.

14. Day 14 — Saturday, Jul 18, 2026 — Nagasaki, Japan

    Nagasaki, Japan is a scheduled port of call on day 14 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: rain, overcast with highs near 85°F.

15. Day 15 — Monday, Jul 20, 2026 — Shimizu, Japan

    Shimizu, Japan is a scheduled port of call on day 15 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: partially cloudy with highs near 81°F.

16. Day 16 — Tuesday, Jul 21, 2026 — Yokohama, Japan

    Yokohama, Japan is a scheduled port of call on day 16 of the 19-night Grand Circle Japan cruise on Diamond Princess. Expected weather: rain, partially cloudy with highs near 85°F.