San Diego's Warmest Beaches: Where to Swim Year Round
- San Diego Beach Review
- Oct 8
- 4 min read
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Introduction
San Diego’s beaches are world-renowned, but not all are ideal for swimming year-round. For tourists unsure about cold water, or families wanting a warm and safe swimming experience, choosing the right beach is essential. This guide highlights the warmest beaches in San Diego, perfect for winter swims or year-round fun.
From calm bay waters to sunny stretches of sand, these beaches offer the best mix of sun, safety, and water warmth, along with easy access to rentals like paddleboards, kayaks, and wetsuits.
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Why Some Beaches Are Warmer
Water temperature varies along the San Diego coastline due to:
Geography: Bays and coves trap warmer water.
Sun exposure: South-facing beaches absorb more heat.
Ocean currents: Open ocean beaches are cooler than protected areas.
Protected beaches such as Mission Bay and Coronado Beach maintain warmer water year-round. Also, keep in mind that the water temperature on a month to month basis varies throughout the year.
1. Mission Bay Beaches
Why It’s Great: Mission Bay has some of the warmest water in San Diego, calm waves, and shallow swimming areas. Ideal for beginners and families.
Best For: Swimming, paddleboarding, kayaking, family fun.
Tips & Rentals: Get a wetsuit to enjoy winter swimming or a paddleboard for calm waters. Floatable tubes are also available from local rental shops.
See our Mission Bay Guide for more information on the different beaches, coves, access points, and more.
2. La Jolla Shores
Why It’s Great: Gentle waves and warm water make it perfect for kids and beginner swimmers. Lifeguards are on duty year-round.
Best For: Swimming, kayaking, beginner snorkeling.
Tips & Rentals: Rent a kayak or snorkel gear to explore the cove safely. Consider a light wetsuit in cooler months. Also, be sure to stay in the loop on La Jolla Shores with parking, crowds, amenities, and more.
Check out our guide to snorkeling in San Diego so that you're prepared before you go!
3. Coronado Central Beach
Why It’s Great: Iconic scenery with warm sand and milder water than neighboring beaches. Great for sunbathing, swimming, and family strolls.
Best For: Swimming, sunbathing, casual family days.
Tips & Rentals: Bring beach chairs and umbrellas to maximize comfort or rent them at Hotel del Coronado. Early mornings offer calm waters and fewer crowds.
Coronado Beach has tons of space for activities, relaxing, and more.
4. La Jolla Cove
Why It’s Great: Small cove with warmer water and excellent snorkeling opportunities. Popular for sea lions and marine life.
Best For: Snorkelers, casual swimmers, marine life enthusiasts.
Tips & Rentals: Rent snorkel gear or a wetsuit for comfort outside of summer months.
See our guide to La Jolla Cove for more information on parking, safety, crowds, and nearby dining, activities, and places to stay.
Comparison Chart: Warmest Beaches in San Diego
Beach | Avg Water Temp (°F) | Best Months | Family-Friendly | Activities |
Mission Bay | 65–70 | Year-round | Yes | Paddleboards, kayaks, floatables, boating |
La Jolla Shores | 63–68 | May–Oct | Yes | Kayaking, snorkeling, surfing |
Coronado Central | 62–67 | Jun–Oct | Yes | Swimming |
La Jolla Cove | 64–68 | Summer–Early Fall | Yes, but be cautious of rocks and wildlife | Snorkeling, kayaking, paddleboarding |
Learn about the keys to family friendly vacations in San Diego with our post on family friendly vacations by the coast.
When Is San Diego Water Warmest?
Winter (Dec–Feb): 60–65°F — wear a wetsuit
Spring (Mar–May): 62–67°F — fewer crowds, warming water
Summer (Jun–Aug): 70–75°F — peak swimming season
Fall (Sep–Nov): 68–73°F — slightly warmer than summer in bays, September and most of October still provide great swimming temperatures
Tips for Swimming Year-Round
Use a Wetsuit in Winter: Stay comfortable longer in cooler water.
Arrive Early: Enjoy calm waters and avoid crowds.
Rent Equipment Locally: Paddleboards, kayaks, and beach chairs and umbrellas can enhance your beach experience.
Swim Safely: Always swim near lifeguards and follow posted flags.
FAQ
Q: Can you swim in San Diego in December?
A: Yes! All beaches remain swimmable and tolerable with a wetsuit.
Q: Which beach is the warmest in San Diego year-round?
A: Mission Bay, followed by La Jolla Shores and Coronado Central Beach.
Q: Are these beaches safe for kids?
A: Yes. All listed beaches are family-friendly, with shallow water and lifeguards.
Q: Do I need a wetsuit year-round?
A: Optional in summer; recommended in winter or for sensitive swimmers.
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Conclusion
San Diego is a year-round destination, and choosing the warmest beaches ensures a comfortable and enjoyable swimming experience. From Mission Bay’s calm waters to La Jolla Shores’ gentle waves, you can enjoy the ocean no matter the season.
Maximize comfort with wetsuits, explore with kayaks and paddleboards, and keep your beach day hassle-free with chairs and umbrellas.
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