About 1km long beach has a shallow part which is suitable for children also there is another area which is famous for surfing(Japan surfing competition was held). Playground and toilets are also available.
Access: From Amino station, take a bus "Yasaka/Amino-sakyu-sen line(弥栄網野砂丘線)" towards "Yasaka-byoin-mae(弥栄病院前)" about 10mins and get off at "Hacchohama(八丁浜) or Hacchohama Seaside Park(八丁浜シーサイドパーク)". Bus fare:200yen/single.
**A shared taxi also running in Amino town. It costs 500JPY/person per ride within Amino town area. Since it is a shared taxi, you need to make a reservation.
Reservation phone number:0772-42-0390 (operation hour: 7:30-18:30)
Better to ask someone who can speak Japanese to book, for example tourist information centre at Amino station open 9:00-17:00. The shared taxi's operation hour is 8:30-17:30.
***There is also normal taxi company available in the area although the fare will be higher than shared one.
For lunch or early dinner, there is a tasty Pizzeria located nearby, both eat-in and take away is possible.
http://seasidekyoto.blogspot.com/2017/03/new-pizzeria-opened-in-amino.html
There is also a hot spring available in walking distance.
http://seasidekyoto.blogspot.com/2013/02/hot-spring-asamogawa-onsenshizunosato.html