Koiji Beach on Nanao Bay offers reasonable swimming conditions, particularly during calm weather when the bay's protected waters are gentle. The sandy beach provides easy entry into the water. However, as a quieter, less developed beach, lifeguard services may be limited or seasonal, so swimmers should be self-aware and cautious. Water quality is generally good, but always check local conditions before swimming. The beach is best suited for moderate swimmers who can assess conditions independently.

Koiji Beach is specifically noted as a quieter alternative within Nanao Bay, making it less crowded than major beaches even during peak summer season. For the absolute fewest visitors, weekdays from May through June or September offer pleasant weather with minimal crowds. The beach is also known for sunsets, making late afternoon visits particularly rewarding. Early mornings provide peaceful solitude year-round. While summer offers the best swimming, shoulder seasons deliver the most tranquil experience for couples and those seeking serenity.

Koiji Beach is located along Nanao Bay and is most easily accessed by car from Nanao city center. As a less prominent beach, it may not be extensively signposted, so GPS navigation or local directions are helpful. Nanao is reachable from Kanazawa by JR Nanao Line train (approximately 1.5 hours) or by car via the Noto Expressway. From Nanao Station, a rental car or taxi is recommended for reaching the beach. Public bus service may be limited or infrequent to this specific location.

Koiji Beach itself is a quieter beach with limited immediate facilities, so visitors should plan accordingly. Nanao city, a short distance away, offers various dining options featuring local seafood and regional Ishikawa cuisine. Accommodation ranges from business hotels to traditional inns throughout Nanao. The nearby Wakura Onsen area provides upscale ryokan options with hot springs. For a beach day, consider bringing snacks and drinks, as beachside vendors may be absent. Check restaurant hours in advance, as some establishments have seasonal schedules.

Koiji Beach is particularly appealing for couples due to its scenic beauty, quieter atmosphere, and reputation for beautiful sunsets over Nanao Bay. The less crowded environment creates a romantic, intimate setting ideal for peaceful beach walks and private relaxation. The combination of sandy shores and bay views provides excellent photography opportunities. Being a hidden gem rather than a major tourist beach, it offers couples a more secluded experience away from families and large groups, perfect for those seeking tranquility and natural beauty together.