Sormiou is family-friendly with one of the few actual sandy sections among the calanques, making it more comfortable for children. Swimming is generally safe in the sheltered cove with clear, calm waters ideal for families. However, no lifeguards are on duty, so adult supervision is essential. The beach is larger than most calanques, providing more space for families. Water shoes help navigate rocky areas. Snorkeling is excellent for older children. The easier terrain and facilities make it more suitable for families than remote calanques like En-Vau.

Late spring (May-June) and early autumn (September) offer the best conditions with warm weather and fewer crowds. Summer weekends bring heavy crowds of local Marseillais families. Weekday visits during summer provide better beach space availability. Access is often restricted in summer (typically July-September) due to fire risk, with road closures and limited parking. Early morning arrival (before 9am) is essential during peak season. The beach faces south, providing good sun exposure throughout the day, making weather conditions more critical than other factors.

From Marseille, drive to the Sormiou district (about 20 minutes from city center) where parking is available, though spaces are limited. A 30-minute downhill walk on a paved road leads to the calanque. During summer fire season, vehicle access is often prohibited, requiring a longer walk from higher parking areas. Bus service from Marseille operates to the area. Boat tours from Marseille's Vieux Port also reach Sormiou. The hike is moderate and family-friendly, though the return uphill walk requires reasonable fitness.

Unlike most calanques, Sormiou has seasonal restaurant facilities (typically operating spring through autumn) serving food and drinks, making it more visitor-friendly. Small fishermen's cabins and cabanons line parts of the calanque, giving it a local village atmosphere. Basic toilet facilities may be available seasonally. However, amenities are limited compared to urban beaches, so bringing supplies is still advisable. The restaurants offer traditional Provençal cuisine and fresh seafood. This infrastructure makes Sormiou more comfortable for day visits, especially with families or less-prepared visitors.

Sormiou holds special significance for Marseille locals as a traditional family beach with authentic cabanon culture—small fishing cabins passed through generations. It's one of the largest and most accessible calanques from Marseille, making it a beloved weekend destination. The presence of sandy areas, seasonal restaurants, and a more developed atmosphere creates a community feel absent from wilder calanques. Locals appreciate the turquoise waters combined with convenient facilities. The calanque represents Marseillais beach culture, blending natural beauty with social tradition, making it authentically local rather than primarily touristic.