Kellys Beach is known for its calm waters, making it generally safe for swimming. Being part of a national park, the beach is often monitored, and conditions are usually favorable for families. However, it's always wise to observe any posted advisories or flags regarding water quality or currents. The gentle slope of the sandy bottom also contributes to a family-friendly swimming experience.

The 'Best Weather' period is generally during the summer months, from late June to early September, when temperatures are warmest for swimming and sunbathing. For fewer crowds, consider visiting in early June or early September. These shoulder seasons often offer pleasant weather with the added benefit of a more tranquil experience, though some park services might have reduced hours.

Kellys Beach is located within Kouchibouguac National Park, so access typically involves driving to the park entrance and then following internal park roads. There are usually designated parking areas close to the boardwalk that leads to the beach. Within the park, cycling is also a popular way to get around, with trails often connecting various points of interest, including the beach.

While there might be some basic snack bar or canteen services available at Kellys Beach during peak season, extensive dining and lodging options are generally found within Kouchibouguac National Park itself, or in nearby communities. The park offers various camping facilities, from primitive sites to equipped tents. For hotels and restaurants, you would typically look to towns outside the park boundaries.

The long boardwalk at Kellys Beach is a defining feature, offering easy access over pristine dunes without disturbing the delicate ecosystem. It provides a unique elevated perspective of the coastal landscape and is accessible for various mobility levels. While the exact length can vary or be updated, it's known for being extensive, allowing visitors to stroll comfortably to the main beach area while enjoying the scenic views.