Swap out the snow shovels and heavy coats for sun-drenched decks and endless margaritas. Heading down to the southern tip of the Baja California Peninsula is practically a winter ritual for those in the know. But what’s the actual deal with Cabo San Lucas weather in December?
It’s pretty much flawless.
December kicks off the prime season in Baja California Sur. You get this amazing mix of hot, sunny beach days followed by crisp, refreshing nights. Getting the climate right is everything when mapping out your itinerary. Let’s dig into the exact temperatures, what the water feels like, how to pack, and the absolute top ways to hit the Sea of Cortez.
What to Expect from Cabo San Lucas Weather in December
Late fall melting into winter delivers some of the best conditions you’ll see all year down here. If you track the calendar, shifting from the Cabo San Lucas weather in November to Cabo weather in December drops the evening temps just enough to feel incredible. It hits the perfect sweet spot for daytime water sports and cozy nighttime dining.
Average Air Temperatures (Highs & Lows)
Expect pure, sun-soaked afternoons. The daytime highs casually sit right around 80°F (26°C). That means it’s definitely warm enough to kick back in a swimsuit on a boat deck without dealing with the sticky, aggressive heat of the mid-summer months. Once the sun dips below the horizon, the desert climate flexes a bit. Evening lows typically chill out around 60°F (16°C). You can check out the historical climate data on Weather Spark if you love tracking the exact numbers, but the local consensus is clear: December feels amazing.
Ocean Temperatures & Sea Conditions
Got plans to hit the water? You’re in luck. Ocean temps in December are still highly swimmable, hovering near 75°F (24°C). The sea usually stays pretty calm this time of year, especially tucked inside the protected bays along the Sea of Cortez. That translates to glassy, smooth surfaces that are perfect for snorkeling, paddleboarding, or just cruising with a drink in your hand.
Sunshine, Humidity, and Rainfall
Nobody wants a rainy boat trip. Good thing December sits firmly in Cabo’s dry season. Rain is practically unheard of right now, and the humidity levels tank compared to the muggy late summer days. Count on endless blue skies and roughly 10 solid hours of sunshine every single day.
Top Things to Do in Cabo San Lucas in December
Because the weather plays nice, your options for things to do in Cabo San Lucas completely open up. No more hiding indoors during the midday heat. Here’s a look at the absolute best things to do in Cabo San Lucas in December.
The Kickoff to Whale Watching Season
December brings serious magic to the coastline. It’s the official start of whale watching season in Baja California Sur. Right around mid-month, massive pods of humpback and gray whales show up in the warm waters of the Sea of Cortez to mate and nurse their calves. The World Wildlife Fund (WWF) highlights the Baja peninsula as a critical marine sanctuary for these animals. Seeing a humpback launch out of the water near your boat? Unbeatable.
Snorkeling at El Arco and Chileno Bay
Calm weather means zero storms churning up the sand. The result? Unreal underwater visibility. Booking a proper El Arco snorkeling adventure puts you right in the mix with tropical fish, sea turtles, and those famously curious local sea lions at Land’s End. After that, head up the coast to Chileno Bay or Santa Maria Bay. The protected coves there offer some of the top-tier snorkeling spots in all of Mexico.
Private Yacht Charters and Sunset Cruises
You can’t come to Cabo in December and not spend a day on the water. It’s practically a crime against vacations. For groups wanting to do it right, locking down a private yacht charter Cabo San Lucas lets you call the shots. Mix up some whale watching with snorkeling, all while a private chef handles the snacks and the open bar stays flowing. Later on, when the sky starts doing that crazy pink and orange thing, a sunset catamaran cruise is easily the most relaxed way to wind down.
The Ultimate December Packing List for Cabo
Since the weather in Cabo San Lucas in December throws warm days and cooler nights at you, your suitcase needs layers. Here is the lowdown on staying comfortable from dawn till dusk.
Daytime Essentials for the Sun and Sea
Pack your standard tropical gear for the daytime hours.
- Swimwear: Bring a few options. You’ll be living in them if you do daily boat tours.
- Sun Protection: Grab a good hat, polarized sunglasses (they cut the glare so you can spot whales better), and quality sunblock. Organizations like Save the Reef push hard for reef-safe sunscreen, and we totally agree. Let’s protect the marine life.
- Light Cover-ups: Easy to throw on when lounging on the deck.
Evening Wear: Why Layering is Key
Once that sun is gone, the desert chill creeps in fast. Layering up is non-negotiable.
- Light Jackets or Sweaters: You’ll definitely want one for walking the marina at night or catching the breeze on a late boat ride.
- Long Pants and Maxi Dresses: Ditch the shorts at night. Jeans, light trousers, or long dresses work perfectly for dinner out.
- Comfortable Footwear: Sandals for the day, and maybe some closed-toe shoes or light boots for the evening chill.
Is December a Good Time to Visit Cabo San Lucas?
Absolutely. Seeing Cabo San Lucas in December is an elite travel move. Flawless weather, holiday energy, and migrating whales give the entire town and marina a buzzing, electric vibe.
But here’s the reality check: it is peak season. Luxury marine experiences, hotels, and top restaurants get snatched up fast. If you want the best boats and prime departure times—especially near Christmas or New Year’s—book weeks ahead. Outlets like Travel + Leisure constantly warn that trying to pull off a spontaneous Cabo holiday trip is a recipe for sold-out frustration. Plan ahead so you aren’t stuck on land!
Conclusion
The Cabo San Lucas weather in December sets up the perfect winter escape. Eighty-degree days, zero rain, and clear ocean water? It’s the ultimate playground for exploring the Sea of Cortez, tracking down whales, and chilling on a private yacht.
Pushing your trip back a bit? No stress. The weather stays incredible into the new year. Check out our breakdown of Cabo San Lucas weather in January for the scoop on the next month.
Ready to ditch the winter grind and hit Baja California Sur? December is our most slammed season, so don’t wait until you land to figure things out. Take a look at our premier fleet of Los Cabos boat tours and grab your private charter, sunset run, or snorkel trip with Boat Trips Club today.