Semiahmoo Beach is generally calm and safe for families, but swimming conditions vary. The water stays quite cold year-round (50-60°F), which limits comfortable swimming even in summer. The beach has gentle waves and a gradual slope, making it safer for wading with children. However, there are no lifeguards on duty. Strong currents can occur during tide changes, so always supervise children closely. Most families prefer beachcombing, building sandcastles, and wading rather than full swimming. Check tide tables before visiting, as low tide reveals extensive tidal pools perfect for exploration.

Semiahmoo Beach is accessible year-round, with each season offering different experiences. Summer (June-September) brings the warmest weather and best conditions for beach activities, though water remains cold. Spring and fall offer fewer crowds and excellent bird-watching opportunities, especially during migration seasons. Winter can be dramatic with storm-watching possibilities, but dress warmly for wind and rain. Sunsets are spectacular year-round. For families, July and August provide the most reliable sunny weather. Visit during low tide for the best tidal pool exploration and beach walking, regardless of season.

Semiahmoo Beach is located at the end of Semiahmoo Parkway in Blaine, Washington, about 5 miles west of Interstate 5 (take exit 274). Free public parking is available at Semiahmoo Park, with spaces filling quickly on sunny summer weekends, so arrive early. Additional parking can be found near the Semiahmoo Resort entrance. The beach is easily accessible from the parking areas via paved paths and boardwalks. Blaine is approximately 100 miles north of Seattle and just south of the Canadian border. No public transportation directly serves the beach.

Semiahmoo Beach is anchored by the Semiahmoo Resort, which offers upscale lodging and multiple restaurants including Pierside Kitchen and the more casual Packers Lounge. The resort features a spa, golf courses, and marina. For budget-friendly options, downtown Blaine (3 miles east) has various motels, casual restaurants, and grocery stores. Drayton Harbor Maritime has waterfront dining nearby. Beach amenities include public restrooms at Semiahmoo Park but no concessions, so bring your own food and drinks for beach picnics. Several picnic tables and beach fire pits are available first-come, first-served.

While Semiahmoo Spit extends north toward the Canadian border and you can see White Rock, British Columbia across Semiahmoo Bay, you cannot walk to Canada from the beach. The international boundary runs through Boundary Bay waters north of the spit. The beach walk extends about 1.5 miles to the tip of Semiahmoo Spit, ending at a historic cannery site. The nearest official border crossing (Pacific Highway) is about 6 miles east. The beach's proximity to Canada makes it historically significant and offers unique international views, but crossing requires proper documentation at designated ports of entry.