Planning a trip to Cabo San Lucas in January? Weather plays a bigger role than you might think. It determines what you pack, which tours make sense, and how you'll spend your days. Some months bring perfect beach weather, others favor jungle adventures or whale watching. January is prime whale-watching season in Cabo.
This guide breaks down exactly what to expect from Cabo San Lucas's weather in January. We'll cover temperatures, rain patterns, ocean conditions, and how all of it affects your plans. By the end, you'll know if January fits what you're looking for and how to make the most of it. January is the coolest month in Cabo, but it's still wonderfully warm compared to most North American destinations during winter.
What's the Average Temperature in Cabo San Lucas During January?
January in Cabo San Lucas brings average daytime highs of 75 to 80°F (24 to 27°C) and nighttime lows of 54 to 61°F (12 to 16°C). The overall average temperature hovers around 66°F (19°C), making it the coolest month of the year in this desert climate. Despite being the "coldest" month, these temperatures are still pleasantly warm for outdoor activities and significantly warmer than most US and European destinations during winter.
How Hot Does It Get in Cabo San Lucas in January?
Peak temperatures in Cabo San Lucas during January are mostly in the mid-to-upper 70s, though rare days may approach 86°F (30°C). The weather generally feels pleasant due to moderate humidity levels (typically 68–83%) and consistent ocean breezes.
Unlike tropical destinations, January in Cabo doesn't bring oppressive heat or sticky conditions. The dry desert air and moderate temperatures create ideal conditions for extended outdoor activities without the exhaustion that comes with extreme heat.
Is It Cold in Cabo San Lucas in January?
Cold weather isn't a major concern in Cabo San Lucas during January, but visitors should prepare for cooler mornings and evenings. Temperatures can drop to the mid-50s°F (12-13°C) in the early morning hours, creating a noticeable chill that requires a light sweater or jacket. During the day, temperatures are perfectly comfortable for shorts and t-shirts.
The "cold" in Cabo is relative – you'll still be warmer than most winter destinations, but the temperature difference between day and night is significant enough to require layered clothing.
What's the Temperature Like at Night in Cabo San Lucas in January?
Nighttime temperatures in Cabo San Lucas during January typically range from 54 to 61°F (12 to 16°C), with early morning being the coolest time. You'll definitely want to pack a light sweater, hoodie, or jacket for evening activities, outdoor dining, and early morning adventures.
The temperature drop from day to night is quite noticeable – about 20-25 degrees – so layers are essential. Many visitors are surprised by how cool evenings can feel after warm, sunny days.
Is the Water Warm Enough to Swim in January?
The ocean temperature in Cabo San Lucas during January averages 72 to 75°F (22 to 24°C), which feels cool but is definitely swimmable for most people. The water temperature is below the tropical comfort zone of 77 to 82°F, so it may feel brisk initially, especially for those accustomed to Caribbean waters.
Many swimmers find it refreshing rather than uncomfortable, particularly after warming up in the sun. For longer snorkeling sessions or diving, a 3-5mm wetsuit is recommended to maintain comfort. The cooler water actually provides excellent visibility for underwater activities, often exceeding 40-100 feet.
Does It Rain in Cabo San Lucas in January?
Rain is extremely rare in Cabo San Lucas during January, with only a 2% chance of precipitation on any given day. January is part of Cabo's dry season and ranks as one of the driest months of the year. When rain does occur, it's typically very light and brief.
Most visitors experience completely dry conditions throughout their entire January stay, making it one of the most reliable months for outdoor activities and water sports.
How Much Rain Should You Expect in Cabo San Lucas in January?
January in Cabo San Lucas averages a mere 0.18 inches (4.6mm) of rainfall spread across 2-3 days. When precipitation occurs, it's brief and light. The desert climate and high-pressure systems typically create drought conditions, with any rare showers lasting less than an hour and rarely disrupting activities.
Is January Part of the Rainy Season in Cabo San Lucas?
January is definitely not part of the rainy season in Cabo San Lucas – it's actually the opposite. January falls squarely within Cabo's dry season, which runs from November through May. The rainy season occurs during summer and early fall (June through October), with September being the wettest month, averaging about 3.75 inches of rainfall. January's minimal precipitation makes it one of the most reliable months for guaranteed sunshine and outdoor activities.
Should You Worry About Storms in Cabo San Lucas in January?
Tropical storms and hurricanes pose no risk in January, as Cabo's hurricane season runs from June through November. January's stable high-pressure systems prevent severe weather, with occasional afternoon winds being the only minor consideration for Pacific-side boat trips. This makes January one of the safest weather months to visit Cabo.
Is It Windy in Cabo San Lucas in January?
January brings moderate winds to Cabo San Lucas (around 3.8 m/s), with stronger afternoon breezes on Pacific-facing beaches. Sea of Cortez areas remain calmer. These pleasant winds keep temperatures comfortable and rarely disrupt activities, though they may create choppier conditions for Pacific boat trips.
What Wildlife Shows Up in Cabo San Lucas in January?
January is peak season for Cabo's most spectacular marine wildlife. Humpback whales arrive in large numbers to breed and calve, putting on dramatic displays of breaching and tail slapping. Gray whales are also present during their epic migration from Alaska. Whale sharks can be found in nearby La Paz waters, offering incredible snorkeling opportunities.
Sea lions are active year-round around the famous Arch and Land's End rocks. The cooler water temperatures coincide with excellent visibility for spotting tropical fish, rays, and occasional blue sharks on specialized tours, while marine biodiversity remains rich year-round.
Does the Weather Affect Tours in Cabo San Lucas During January?
January's stable weather conditions make it one of the best months for tour reliability in Cabo San Lucas. The minimal rainfall and consistent sunshine mean cancellations are extremely rare. However, January is peak tourist season, so tours fill up quickly and advance booking is essential.
The cooler water temperature means snorkeling and diving tours provide wetsuits, and whale watching conditions are ideal with clear skies and excellent visibility.
What to Bring for Cabo San Lucas in January
Weather determines everything you pack. January's conditions in Cabo San Lucas mean you'll want specific gear to stay comfortable and make the most of your trip. Pack lightweight daywear for warm afternoons, but don't forget layers for cooler mornings and evenings.
A light sweater or jacket is essential for nighttime activities. The minimal rain means you can focus on sun protection rather than rain gear, though a light rain jacket provides peace of mind.
For a complete breakdown of exactly what to bring, check out our detailed guide: What to Pack for Cabo San Lucas in January.
Best Things to Do in Cabo San Lucas in January
January brings specific advantages to Cabo San Lucas. Whale watching reaches its peak with humpback and gray whales arriving in large numbers for the breeding season. The cooler water temperatures provide excellent visibility for snorkeling and diving, often reaching up to 80–100 feet.
Beach activities are comfortable without oppressive heat, and outdoor adventures like ATV tours and hiking are ideal in the moderate temperatures. Desert excursions, zip-lining, and cultural tours all benefit from January's stable, dry conditions.
We've put together a full guide covering the top experiences: Things to Do in Cabo San Lucas in January.
Our Top Pick to Enjoy the Best of Cabo San Lucas: Whale Watching Adventure
January is the absolute peak of whale watching season in Cabo San Lucas, when humpback, gray, blue, and minke whales arrive to breed and calve in the warm waters. Our exhilarating marine expedition uses custom-made rigid inflatable boats, taking advantage of January's calm seas and excellent visibility. You'll witness dramatic whale behaviors like breaching and tail slapping, and even listen to whale songs through state-of-the-art hydrophones.
Our expert marine specialists know exactly where to find whale activity and understand how January's weather patterns affect marine behavior. The tour also includes breathtaking views of the Cabo San Lucas Arch, Lover's Beach, and a colony of sea lions. At less than 3 hours in duration, January's stable weather conditions ensure reliable departures and optimal viewing conditions for this unforgettable marine adventure.
You're Ready for Cabo San Lucas in January
Now you know what Cabo San Lucas weather looks like in January. You can plan around the comfortable daytime temperatures, prepare for cooler evenings with layers, and time your activities to match the consistently dry conditions. Whether you're here for whale watching, underwater adventures, or desert exploration, January offers some of the year's most reliable weather with peak marine wildlife activity.
Ready to make it happen? Browse our full selection of Cabo San Lucas tours (https://www.cabo-adventures.com/en) and find the experiences that fit your travel style. The best tours fill up fast during January's peak whale watching season, so book ahead and show up ready for incredible marine encounters and perfect weather conditions.
