Spiaggia del Principe is generally safe for swimming with calm, clear waters protected by the cove's natural shape. The emerald waters are typically tranquil, though currents can vary depending on winds. The beach has a sandy bottom with some rocks, so water shoes can be helpful. No lifeguards are present, so swim cautiously and supervise children. The cove's sheltered position usually provides calm conditions ideal for swimming and snorkeling. Always check local weather and sea conditions before entering the water.

The best weather occurs from June through September with warm temperatures and calm seas. July and August offer peak conditions but bring significant crowds to this famous Costa Smeralda beach. For the best experience with fewer people, visit in June or September when weather remains excellent but tourist numbers decrease. Arriving early morning (before 10am) or late afternoon helps avoid peak crowds even in summer. May and October offer quieter visits but cooler water and less predictable weather.