Dreamy Lanikai Beach on Windward Oahu is pure eye candy, with cupcake islands just offshore silky sands. Flowering shrubs line the paths from an uber-cool beach cottage community. Don't be surprised to see a professional fashion shoot going on. Commercial photographers love this place.
Add some real-life spice to the day by stroking a rental sea kayak to the seabird sanctuary islands of Mokolea and Moku Manu, or back off a little and go for Flat Island (not pictured), which is much closer—you can swim there with a mask and fins.
Kailua Beach Park is a kissing cousin to Lanikai, via a short walk. The scene amps a bit here, with a huge lawn to host other fun-sun activities (like these kite-boarders prepping to take off). There's plenty of shade and picnic tables along a wide greenspace. A cold brew, ice cream, and other gotta-haves aren't far away.
Get driving directions in your Oahu Trailblazer. It's about an hour away from Waikiki.