Lake McKenzie is generally very safe for swimming. The freshwater lake has no waves, currents, or dangerous marine life like jellyfish or sharks. The water is exceptionally clear with a sandy bottom, making it ideal for families with children. The lake reaches shallow depths gradually, perfect for wading. However, there are no lifeguards on duty, so supervision of children is essential. The pure rainwater can feel cool, especially in winter months. Swimming is permitted year-round, and the calm conditions make it suitable for all swimming abilities.

Lake McKenzie is stunning year-round, though April to October offers the most comfortable weather with mild temperatures and lower humidity. Summer (December-February) brings warm water and lush surroundings but can be hot and humid with occasional afternoon storms. Winter (June-August) sees cooler water temperatures but fewer crowds and pleasant daytime warmth. Avoid Australian school holidays if you prefer quieter visits. Early morning arrivals any season offer the best chance for photographs with fewer people and glassy water conditions reflecting the surrounding rainforest.

Lake McKenzie is accessible only by 4WD vehicle, as K'gari has no sealed roads. Most visitors join guided tours from Hervey Bay or Rainbow Beach, or hire a 4WD and explore independently with required permits. The lake is located in the island's interior, approximately 6.4 kilometres from Central Station via sandy tracks. A designated car park accommodates vehicles, though it fills quickly during peak times. Independent drivers need a Vehicle Access Permit and should be experienced in beach and sand driving. The walk from the car park to the lake is short and easy.

Lake McKenzie has basic facilities including toilets and boardwalks, but no food vendors, shops, or accommodation directly at the lake. Visitors must bring all food, water, and supplies with them. The nearest accommodation options are at Kingfisher Bay Resort, Eurong Beach Resort, or various camping areas across K'gari, all requiring vehicle travel. Picnic tables are available, and designated eating areas help minimize environmental impact. Remember to take all rubbish with you, as bins are not provided to protect the pristine environment and deter dingoes.

Lake McKenzie is a perched lake, meaning it sits above the water table in a depression of compacted sand and organic matter. It contains only rainwater with no streams flowing in or out, making it exceptionally pure. The white silica sand acts as a natural filter, and the lack of minerals or sediment creates the stunning crystal-clear visibility. The vivid blue colour results from the pure water reflecting the sky. This also means the lake is quite acidic and nutrient-poor, so no fish live here, preserving its pristine condition.