Ishinamigawa is a surf spot located at the mouth of a river where the waves break over a mix of boulders and cobblestones. It's a place that offers a different vibe compared to your typical beach breaks. It mainly works best on Northeast to East swells, making it a unique spot to explore. Just keep in mind that the river mouth can create some tricky conditions, which is not ideal for beginners.

When it comes to surfing here, you'll find that Ishinamigawa can produce hollow waves, especially when the NorthEast swells roll in. The waves tend to break both left and right, catering to different riding styles. With swell sizes as small as 2 ft (about 0.6 meters) and going up from there, it’s quite versatile. However, this spot can be tough to paddle out, and it's important to hit it at low, mid, or high tide for the best conditions. If the wind is coming from the Northwest, your chances of scoring some decent waves improve quite a bit.

Your experience level matters here, so make sure you're at least an intermediate surfer before tackling Ishinamigawa. Weekends tend to get crowded when the waves are firing, so plan your sessions accordingly if you want some space to ride.