Planning a winter escape means trading sub-zero mornings for sun-drenched beaches, but you still need to know what to expect from the climate. December in Cabo San Lucas delivers a reliable mix of warm daytime sunshine and crisp evening air. It's a peak time for travel, drawing visitors who want to skip the freezing winter back home without enduring the suffocating humidity of the summer wet season.
Daytime Temperatures and Sunshine
Daytime highs typically hover between 75°F and 82°F (24°C to 28°C). This makes outdoor adventures like hiking, golfing, or walking around the marina comfortable from morning until late afternoon. You'll get roughly nine hours of sunshine daily, giving you plenty of daylight to explore.
Unlike the sticky, oppressive heat found in tropical destinations during other parts of the year, December humidity stays moderate. The air feels crisp and dry, meaning you won't sweat through your clothes the moment you step outside.
Evening Drops and Nighttime Air
The biggest surprise for first-time visitors is how quickly the temperature falls once the sun sets. Nighttime lows drop into the upper 50s to low 60s°F (13°C to 17°C).
When you're sitting at an open-air restaurant near the coast, coastal breezes add a noticeable chill. Packing layers is non-negotiable if you plan on enjoying nightlife or sunset boat cruises. A light sweater, fleece, or jacket will keep you comfortable.
Rainfall and Storm Risks
December falls squarely in the dry season for the Baja California Peninsula. Rainfall is exceedingly rare, with the entire month averaging only about 4mm to 6mm of total precipitation.
You might encounter a stray, brief shower, but multi-day rainouts basically don't happen. Furthermore, the regional hurricane season officially concludes at the end of November. You won't have to monitor tropical storm forecasts or worry about severe weather disruptions ruining your itinerary.
Ocean Temperatures and Water Activities
Sea temperatures in December average around 74°F to 75°F (23°C to 24°C). While this is a noticeable drop from the warm 85°F water found in late summer, it's still refreshing for swimming, snorkeling, and paddleboarding.
+--------------------+--------------------------------+
| Metric | December Average |
+--------------------+--------------------------------+
| Daytime High | 78°F - 82°F (25°C - 28°C) |
| Nighttime Low | 55°F - 62°F (13°C - 17°C) |
| Sea Temperature | 74°F - 75°F (23°C - 24°C) |
| Monthly Rainfall | ~4mm to 6mm (Minimal) |
| Daily Sunshine | ~9 hours |
+--------------------+--------------------------------+
If you plan on spending hours scuba diving or you get cold easily, you might want a thin wetsuit. For casual beachgoers, the water is crisp, clean, and perfectly manageable. December also marks the peak arrival time for humpback whales migrating south from Alaska, making ocean excursions worthwhile. You can track official regional tourism updates and marine safety guidelines via Visit Baja California Sur.
What to Pack for December in Cabo
Packing for a winter trip to Cabo requires a balanced suitcase. Don't rely solely on summer beach attire.
- Swimwear and shorts: Essential for daytime pool lounging and beach trips.
- Light layers: Pack cardigans, hoodies, or windbreakers for chilly dinners.
- Long pants: Jeans or chinos are ideal for men and women during evening outings.
- Sun protection: High UV index levels persist even in winter, so bring reef-safe sunscreen and sunglasses.
- Comfortable walking shoes: Great for exploring downtown streets, cobblestone pathways, and resort properties.
Frequently Asked Questions
Is December too cold to swim in Cabo San Lucas?
No. While the water is cooler than it is in August or September, 74°F is comfortable for most people during the heat of the day. Private resort pools that lack heating can feel brisk in the mornings, but ocean swimming remains popular.
Do I need to book December activities in advance?
Yes. Because December brings holiday travelers and ideal weather, flights, high-end restaurants, and whale-watching excursions fill up weeks ahead of time.
Does it ever rain during Christmas or New Year's week?
Statistically, the chance of measurable rain on any given day in December is around two percent. Holiday weeks are overwhelmingly dry and sunny.
Are the beaches crowded in December?
Early December is relatively calm, but the weeks surrounding Christmas and New Year's Eve experience peak tourism volume. Expect busier marinas, higher demand for transport, and lively crowds throughout the Mexico Tourism Board official network of destinations.
