Have You Heard of the Pacific Coast Blob? Warmer Pacific Waters Are Changing Spring Diving

Welcome Once again to Hollywood divers Blog, where the Big News this time is the BLOB.

If you've been paying attention to marine forecasts lately, you may have noticed something different brewing off Our Local Pacific Coast — and no, we're not talking about a storm. 

Marine forecasters are calling for warmer Pacific Coast water temperatures this spring than we've seen in roughly 100 years. That's big news for divers, and here's why.

What Is the Pacific Coast Blob?

The "Pacific Coast Blob" refers to an anomalous mass of warmer-than-average ocean water that has been building along the Pacific Coast. Similar in nature to the infamous "Pacific Blob" that disrupted marine ecosystems back in 2014–2015, this new warm water event is drawing attention from oceanographers, marine biologists, and divers. San Diego waters are warmer this spring than ever recorded.

THE BLOB BLOG

Unlike its predecessor, early indications suggest this blob may bring more favorable conditions for recreational diving, with clearer visibility windows and more active marine life in shallower waters. Long Term, this temperature will change our Local Ecosystems in ways that may be detrimental to Mammals, Sea Mammals and Plant Life.

What the Numbers Are Saying

Marine forecasts are projecting low-to-mid 60s°F saltwater temperatures reaching all the way to Santa Cruz Island — a stretch of warm water that's genuinely rare for this time of year. To put it in perspective, we haven't seen spring temps like this along this stretch of coastline since around 2015.

For Southern California divers, this is a golden opportunity. Warmer water means:

• More comfortable dives with lighter wetsuit configurations
• Increased pelagic activity — think yellowtail, white seabass, and even the occasional mola mola
• Expanded range of warm-water species pushing north
• Potentially exceptional visibility as thermoclines stabilize

Santa Cruz Island: A Prime Destination This Spring

With warm water pushing all the way out to Santa Cruz Island, conditions are shaping up to be exceptional at one of Southern California's most beloved dive destinations. The island's kelp forests, sea caves, and diverse marine life make it a bucket-list dive site in any year — but with these temperatures, spring 2026 could be truly special.

Whether you're exploring the famous Painted Cave, diving the kelp beds off Scorpion Anchorage, or photographing rocky reefs, the warmer water is expected to bring out more marine activity across the board.

What Should Divers Do to Prepare?

Warmer water is great news, but preparation is still key. Here are a few tips heading into this spring season:

• Reassess your wetsuit: If you've been diving in a 7mm all winter, you may be able to drop to a 5mm  with Hooded Vest or even a 3mm for Snorkeling and Breath hold - Skin diving. Check conditions on the day of your dive.
• Watch the forecasts closely: Warm water events can shift quickly. Keep an eye on NOAA and local marine forecasts for the latest updates.
• Hollywood divers Suggests Using these Weather Helpers to Determine Where and When to hit the Water 
• Based on local diver consensus and specialized marine forecasting, the top three weather-related websites for planning scuba diving and snorkeling trips in Southern California are

  Windy.com, Surfline, and CDIP (Coastal Data Information Program). These tools are preferred for their ability to predict swell, visibility, and wind, which are critical for navigating Southern California's often-challenging shore diving conditions.
  1. Best for: Visualizing wind, swells, and changing ocean conditions.
  • Why it's great for SoCal: Divers in the region frequently use Windy to monitor how wind patterns and swell direction will impact visibility in areas like Palos Verdes, Laguna Beach, and La Jolla. It provides highly detailed maps that allow you to compare multiple forecasts for waves, wind speeds, and surge. 
  
  
  2. SURFLINE
  • Why it's great for SoCal: While designed for surfing, many shore divers use Surfline in reverse: if the surf report is "poor" (small waves, low energy), it is often "good" (high visibility, low surge) for diving. It provides reliable, location-specific data for popular snorkeling spots d such as Malibu, Redondo Beach, and La Jolla.
    Best for: Live webcams and detailed surf/swell reports
• 3.  CDIP - Local Wave Forecasts and Nowcasts
  Best for: Live, accurate, and historical swell data.
  • Why it's great for SoCal: Managed by Scripps Institution of Oceanography, this tool is the gold standard for measuring wave heights and periods (how often waves hit). Divers use this to determine if the "long-period swells" are likely to stir up bottom sediment, leading to poor underwater visibility. 
• Book your Channel Islands trips early: Come with Hollywood Divers on April 12th ! Spectre Spring Celebration With Hollywood Divers 2026 
• Stay current on your skills: If you haven't been in the water much this winter, now's a great time to do a refresher dive before heading out to the islands.

Stay Tuned

At Hollywood Divers, we'll be keeping a close eye on conditions throughout the spring. Stop by the shop, give us a call, or follow us on social media for the latest updates on water temps, visibility reports, and trip availability. This could be one of the best springs for Pacific diving in over a decade — and we don't want you to miss it.

Dive safe, dive often, and enjoy the warm water while it lasts!