Swimming at Horseshoe Island Beach is unsafe and strongly discouraged. Antarctic waters maintain temperatures between -2°C and 2°C throughout the year, which can cause immediate cold shock, rapid hypothermia, and loss of muscle control within minutes of immersion. The remote location means emergency medical assistance is extremely limited. Even accidental falls into the water require immediate rescue and warming. Visitors should maintain safe distances from the water's edge, as pebble beaches can be slippery and unstable near the waterline, especially with ice present.

Visit Horseshoe Island Beach during the Antarctic summer from late November to early March, with January and February offering the most stable conditions. During these months, average temperatures range from -5°C to 3°C, and continuous daylight facilitates safe navigation and zodiac landings. Sea ice is at its minimum extent, improving accessibility. This period also aligns with wildlife breeding seasons. Weather remains highly variable, and all Antarctic visits depend on real-time conditions. Early and late season visits may encounter more ice and limited daylight hours.