Things To Do In Hawaii In December

December in Hawaii is the island equivalent of a wink and a warm hug. While the mainland bundles up in coats and regrets, Hawaii hands you a plate of fresh pineapple and says, “Relax, you’re on island time now.”

Yes, it rains more in winter. Also yes, the sun still shows up like it has a personal vendetta against your pale winter skin.

Here are the best things to do in Hawaii in December, from whale watching to shave ice, with plenty of chances to do absolutely nothing in paradise.

Watch Whales Put On a Show

December marks the start of humpback whale season in Hawaii, and the whales are not shy. They migrate from Alaska to warm Hawaiian waters to mate, give birth, and generally show off.

Book a whale-watching tour from Maui, Oahu, or the Big Island. Or just stare at the ocean long enough and scream, “THAR SHE BLOWS!” when you see a spout.

Pro tip: Morning tours often mean calmer seas. Bring binoculars, a jacket, and low expectations for personal space if a whale breaches nearby.

Catch a Sunrise You Will Actually Remember

Haleakalā on Maui is famous for sunrise, and December delivers crisp air and unreal stars before dawn. You need a reservation for the summit, so plan ahead instead of showing up like it’s a drive-thru.

It is cold up there. Yes, in Hawaii. Bring layers, gloves, and maybe a blanket, because 30-something degrees at 10,000 feet is not a vibe you want to fight in flip-flops.

If waking up at 3 a.m. sounds terrible, try sunset instead. Same volcano, fewer alarms, and you can still say you did something epic.

Surf, Watch Surfers, or Just Look Impressed

December is prime time for big-wave surfing on Oahu’s North Shore. The Vans Triple Crown and other contests bring world-class surfers to spots like Banzai Pipeline and Sunset Beach.

Even if you have the balance of a newborn giraffe, watching is a blast. Grab a plate lunch, find a safe spot, and cheer when someone rides a wave the size of a school bus.

Want to try surfing yourself? Head to Waikiki or Lahaina, where the waves are friendlier, the instructors are patient, and you will definitely fall, laugh, and swallow seawater.

Soak Up Holiday Cheer, Island Style

Honolulu City Lights transforms downtown into a twinkly wonderland, usually with a giant Christmas tree and festive displays. It is charming, crowded, and exactly the kind of holiday cheer that pairs well with malasadas.

Hawaiian Christmas

On Maui, check out the Banyan Tree lighting in Lahaina if events are running. On the Big Island, resorts go all out with lights, music, and enough decorated palm trees to make Santa consider relocating.

And yes, you can hear Mele Kalikimaka everywhere. It is impossible not to smile when someone says Merry Christmas in Hawaiian.

Hike Through Jurassic Park Vibes

December weather is cooler and often perfect for hiking, especially early in the day. On Kauai, the Kalalau Trail along the Na Pali Coast is stunning, but only for experienced hikers with permits.

For something easier, try Diamond Head on Oahu or Waimea Canyon on Kauai. The views are absurd in the best way, and your camera roll will look like a movie set.

Remember: rain makes trails muddy and slippery. Wear real shoes, not the flip-flops you bought at a gas station.

Eat Your Weight in Local Favorites

December is a great excuse to eat like every meal is a holiday feast. Go for poke, plate lunches, loco moco, garlic shrimp, shave ice, and malasadas.

If you are on Oahu, hit the North Shore shrimp trucks and Haleiwa for shave ice. On Maui, find a fish taco spot and pretend you discovered it.

Important: Shave ice is not a snow cone. It is soft, fluffy, and usually topped with ice cream and azuki beans, which sounds weird and tastes amazing.

Drive the Road to Hana Without Losing Your Mind

The Road to Hana is a full-day adventure with waterfalls, jungle, and approximately 600 hairpin turns. December rain can make it extra lush, extra slippery, and extra dramatic.

Start early, download an audio guide, and pull over for lookouts. Do not rush, and do not be the person driving like they are late for a flight.

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If someone in your car gets carsick, put them in the front seat. If they still get carsick, hand them a ginger chew and a polite bucket.

Stargaze Like a Tiny Cosmic Speck

Mauna Kea on the Big Island offers some of the best stargazing on Earth. December nights are clear and cold, so bring warm clothes and check tour rules before heading up.

Haleakalā also delivers incredible night skies. Seeing the Milky Way from Hawaii feels like someone turned on the universe’s high-definition setting.

Just remember: altitude is real. Hydrate, take it slow, and do not try to hike to the summit in sandals while eating a heavy plate lunch.

Hit the Beach, Obviously

December beach days in Hawaii are warm, but the water can be rougher on north-facing shores. If you want calm swimming, head to south-facing beaches like Waikiki, Kailua, or Poipu.

Winter swells can make the ocean dangerous, so listen to lifeguards. They are not trying to ruin your vacation; they are trying to keep you from becoming a blog post titled “Tourist Learns Lesson.”

Bring reef-safe sunscreen, a towel, and maybe a book you will pretend to read while napping. That counts as an activity, and honestly, it is a great one.

One Last Tiny Tip

Book popular tours, restaurants, and sunrise reservations early. December is busy, and “we’ll figure it out” is a lovely motto until it isn’t.

Conclusion: December in Hawaii Is a Gift

Hawaii in December is not just a beach trip. It is whales, twinkling trees, big waves, warm rain, and shave ice that ruins all other desserts for you.

You can be adventurous, lazy, festive, or all three in the same day. That is the magic of the islands.

So pack a swimsuit, a rain jacket, and a sense of humor. Hawaii will handle the rest, and you will leave with sandy shoes and a very happy heart.