Geisei, Japan offers 1 beach perfect for sunbathing, surfing, swimming, and more. Geisei, Shikoku, Japan, is known for the Geisei Village Museum and the scenic beauty of the surrounding Kochi Prefecture. The best time to travel to Geisei, Japan, is in May when the average air temperature is around 20°C (68°F) and the water temperature is approximately 19°C (66°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!