Minka Kelly Basking in Hawaiian Sun for Christmas Vacation

Minka Kelly's checking out Hawaii for the holidays ... where the sun's a tad warmer than in her hometown of L.A.

Minka brought her talents to the Big Island where she took a dip and basked under the sun in this one-piece bathing suit. Nice job matching the outfit with that trucker's hat. She was there with friends ... paddleboarding and even helping her gal pal keeping her bikini top intact.

And because we know you're wondering ... no sign of Jesse Williams anywhere.