Pichilemu is renowned for surfing, which indicates waves and currents that require respect and awareness. Experienced surfers will find excellent conditions, but casual swimmers should exercise caution and stay in designated areas. The beach often has lifeguards during peak season, but always check current conditions before entering the water. Strong currents and cold Pacific waters are common along this coast. Beginners should consider taking lessons from local surf schools that understand local conditions. Never surf or swim alone, and be aware that conditions change with tides and weather.

Pichilemu offers year-round surfing, but the best conditions typically occur during Chile's autumn and winter months (March through August) when larger swells arrive from Southern Ocean storms. Summer (December-February) brings warmer weather, more tourists, and generally smaller waves, making it ideal for beginners. The best weather occurs during summer, though serious surfers often prefer cooler months for bigger waves. Spring (September-November) offers a compromise between swell size and comfortable air temperatures. Water remains cold year-round, so wetsuits are essential regardless of season.