Ubatumirim, Brazil offers 1 beach perfect for sunbathing, surfing, swimming, and more. Ubatumirim, Sao Paulo, Brazil, is known for its proximity to the beautiful Ubatumirim Beach and the lush Serra do Mar State Park. The best time to travel to Ubatumirim, Brazil, is from April to September, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 72°F (22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!