Grumari, Brazil offers 1 beach perfect for sunbathing, surfing, swimming, and more. Grumari is known for its pristine, unspoiled beaches and natural beauty, offering a tranquil escape from the bustling city of Rio de Janeiro. The best time to travel to Grumari, Brazil, is from December to March, when the average air temperature ranges from 25°C to 30°C (77°F to 86°F) and the water temperature is around 24°C to 26°C (75°F to 79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!