Most candidates think the Pacific Ocean is what breaks them at BUD/S. They're wrong. Here's what actually gets you — and how to prepare for it.
The Cold Reality of BUD/S and Hell Week
This time of year, the water temperature off Coronado drops 5–8 degrees. Summer averages around 74°F. Winter? High 50s. And San Diego is a desert — nights can drop to the low 50s with a constant side-shore wind cutting off the Pacific.
That combination — wet clothes, cold air, and relentless wind — is what destroys candidates. Not the water itself.
Why Cold Showers Aren't Enough
A lot of guys think taking cold showers every morning will prepare them for BUD/S. And while cold exposure has real health benefits, it misses the point.
It's not the water that makes you cold at BUD/S. It's the air temperature and side-shore winds.
Here's a better mental model: imagine putting on a soaking wet cotton t-shirt and BDU pants, then standing outside with your arms overhead in a 15-knot wind for 10–15 minutes. Now imagine doing that for 4 hours straight. That's what Hell Week feels like. Your core temperature drops fast and there's no escaping it — until the next meal.
What You Can Actually Control
Here's the truth: the cold is going to suck no matter what. You can't fully simulate it in training. So stop stressing about what you can't control and focus on what you can.
1. Build Your Fitness Base
The fitter you are, the more heat your body generates and the longer you can sustain output under stress. Candidates who are in peak condition handle the cold significantly better than those who are just getting by physically.
- Run and ruck in soft sand — this is non-negotiable BUD/S prep
- Build your swim endurance in open water when possible
- High-rep PT that mirrors the volume of Hell Week
2. Dial In Your Nutrition
Body fat is insulation. Not a lot — but some. Candidates who are extremely lean freeze faster. Make sure you're fueling properly and carrying enough functional mass to sustain you through multi-day cold exposure.
🥶 The cold will test everything you've built. Make sure you've built enough.
Start with the program designed to forge operator-level fitness and mental toughness.
Start SGPT 365 Total Training System →
3. Train Your Mind for Discomfort
Cold is 90% mental after a certain point. The candidates who make it through Hell Week aren't the ones who feel the cold less — they're the ones who've trained themselves to keep moving anyway.
- Do one thing every day that's uncomfortable
- Train in bad weather — rain, wind, cold mornings
- Practice box breathing (4-4-4-4) to stay calm under stress
4. Focus on What's Next, Not How Long
At BUD/S, you don't survive Hell Week by thinking about how many days are left. You survive by thinking: "Get through the next evolution. Get through the next meal. Get through the next hour." Small wins stack into big victories.
Start Building Cold-Weather Toughness Now
The best preparation for BUD/S cold isn't a cold shower — it's showing up to selection in the best shape of your life with a mind that's been tested and hardened. These SGPT programs are built to do exactly that:
🔥 SGPT Silver On-Ramp Program — The ideal starting point. Build functional fitness and endurance the right way before pushing into advanced training.
💪 SGPT 365 Total Training System — A full year of operator-level programming that builds the body and mind that won't quit — in any conditions.
🏋️ Tier 1 Development Program — Advanced 90-day tactical fitness for those ready to train at the DEVGRU and Delta Force level.
📖 Endurance to Find Your Why 2026 — The mental framework behind every operator who makes it through. Build the mind first.
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Coach Brad McLeod
SEALgrinderPT.com