It looks like “Umibe no Hiroppa Festa 2025” will be held on Sunday, October 26, near the Nishinomiya Battery in Omaehama Park.
(Information provided by Koharu Sanjuro)
Here it is↓

Umibe no Hiroppa Festa 2025
When is it?
Sunday, October 26, 2025, 13:00〜16:00
※Registration for the parent-child cruising starts at 12:30〜
※Held rain or shine
Where is it?
Near the Nishinomiya Battery in Omaehama Park
Here it is on the map↓
The address is 1-14 Nishihatocho, Nishinomiya City, Hyogo Prefecture.
What will they have?

- Battery Gallery viewing & Battery tour. Includes a guided tour by a museum curator and a participation prize🏯
- A 30-minute stroll on the water with a parent-child cruise experience⛴️※First-come, first-served
- Team beach cleanup competition. Everyone helps clean up microplastic waste🧤
- Satohama De Treasure Hunt rally. Lots to enjoy, including searching for shells, sea glass, and invasive plants🔎
- Let’s play on the beach! Various workshops, including kite making, giant soap bubbles, and woodworking crafts🎈
- You can also collect eco stamps♻️
Participation fee?
Free admission
How to sign up
All programs accept registration on the day of the event〜
- Battery Gallery & tour: 13:30・14:30・15:30
- Parent-child cruising: Boarding registration from 12:30〜, departures at 13:30/14:30/15:30
- Beach cleanup competition: Registration from 13:00〜, event held 13:15〜13:45
- Treasure hunt rally: 13:00〜15:45
- Let’s play on the beach! Workshops: 13:00〜16:00
Lastly
There aren’t many chances to go inside the Nishinomiya Battery, so this is definitely a rare opportunity! From cruising to activities where you can play and learn by the sea and on the beach, there’s a packed lineup of fun. It looks like parents and kids will be able to enjoy plenty together〜⛵️😆
※Koharu Sanjuro, thank you for the information!!
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