Hellyer County Park is a water park in San Jose, California, offering fun aquatic experiences for the whole family. This page covers Hellyer County Park tickets, current prices, opening hours, and what visitors are saying. Searching for a waterpark near you in San Jose, California? Hellyer County Park is one of the closest local options for families and visitors looking to cool off during the warmer months. The park is well-suited for families and caters to a range of age groups. Younger children and toddlers are particularly well-catered for, with dedicated shallow splash areas and gentle attractions. Visitors rate Hellyer County Park 5.0 out of 5 stars based on 5 reviews. Guests frequently highlight Clean and well-maintained park, Plenty of open space and shaded areas, Great for families and outdoor activities as standout aspects of the experience. Well-maintained trails for walking and biking, ample picnic areas with BBQ pits, beautiful natural scenery and wildlife spotting opportunities. For the best experience, plan your visit during early morning or late afternoon to avoid the busiest periods. Plan your visit during weekdays for a quieter experience, arrive early to secure parking, and bring cash for parking fees.