Oulu, Finland offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Oulu is known for the annual Air Guitar World Championships and the Oulu Music Video Festival. The best time to travel to Oulu, Finland, is during the summer months of June to August, when the average air temperature is around 15-20°C (59-68°F) and the water temperature in the Gulf of Bothnia is approximately 10-15°C (50-59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!