Golf Tutorials

How to Keep Golf Balls Warm

By Spencer Lanoue
July 24, 2025

Playing golf on a crisp, cold day can test your resolve, but the dropping temperature will absolutely rob you of distance if you're not prepared. The solution is simpler than you think: keeping your golf ball from getting ice-cold. This article will show you exactly how to keep your golf balls warm - legally and effectively - to maintain performance and enjoy your round, even when the forecast is chilly. We'll cover why it works, the rules you need to know, and practical steps you can take before and during your round.

Why a Warm Golf Ball Matters in the Cold

Ever tried to bounce a rubber ball that’s been sitting outside in the winter? It thuds without much energy. A cold golf ball behaves in a similar way. The performance difference between a warm golf ball and a cold one isn't just a gimmick, it's based on simple physics that directly impacts your distance off the tee.

There are two primary factors at play:

  1. The Air: Cold air is denser than warm air. Denser air creates more drag on the golf ball as it flies, which slightly slows it down and reduces its carry distance. While you can't change the weather, you can control the other variable: the ball itself.
  2. The Ball's Core: This is the big one. Modern multi-layer golf balls are built with high-tech polymer cores and mantles designed to compress and rebound at impact - this is often called the "spring-like effect" or Coefficient of Restitution (COR). When a golf ball gets cold, these polymer layers lose elasticity and become harder. A harder, less-elastic ball doesn't compress as effectively against the clubface. This results in a lower launch speed and less spin, both of which are major ingredients for distance.

How much distance are we talking about? General testing shows that for every 10°F drop in temperature, you can lose about 2-3 yards of carry with your driver. If you’re playing on a 40°F (4°C) day compared to a 70°F (21°C) day, that’s a potential loss of 6-9 yards from the weather alone. If your golf ball is also sitting on the frozen ground getting even colder between shots, that distance loss can multiply. By simply keeping your golf ball closer to its optimal room temperature, you help its core retain that vital elasticity, giving you back some of that lost performance.

Understanding the Rules: Keeping It Legal

Before we get into the practical methods, we have to talk about the rules. This is where many well-intentioned golfers go wrong. According to the USGA and R&,A's Rules of Golf, you are not allowed to artificially heat your golf ball during a round. Rule 4.2a (Use of Equipment) states that a player must not make a stroke with equipment that has been "deliberately changed by...applying an external agent to it...or heating or cooling it."

So, does this mean any attempt to keep a ball warm is illegal? Not at all. The key word here is "artificially." The official interpretations clarify this beautifully. Keeping a ball in your pocket to warm it with your body heat is perfectly fine, because your body is not considered an "artificial device." Using a specially designed, battery-powered heating pouch during the round to warm a ball up? That is illegal.

Think of it this way:

  • Legal: Taking action to prevent a ball from getting cold using your own body heat or an insulated (but not heated) pouch. Essentially, you are maintaining its temperature.
  • Illegal: Using an external heat source (like a hand warmer, car heater vent, or powered device) to actively increase the temperature of a ball during the stipulated round.

Our focus is on the smart, legal ways to keep that ball performing its best without breaking any rules. The advice here is all about preparation and maintenance, not artificial enhancement.

Pre-Round Prep: Giving Your Golf Balls a Head Start

The smartest way to have warm golf balls on the course is to ensure they never get cold in the first place. You wouldn’t show up for a winter round after leaving your clubs in the car overnight, and the same principle applies to your golf balls.

Step 1: Store Them Indoors

This is the simplest and most effective step. Don’t store your golf bag in a cold garage, shed, or the trunk of your car. Keep your golf balls inside your house at a stable, comfortable room temperature. A ball starting at 70°F (21°C) has a huge performance advantage over one that starts at 40°F (4°C) before you even step on the first tee.

Step 2: A Warm Bath Before You Leave

This is a an excellent pro tip for players in really cold climates. About 30-45 minutes before you leave for the course, submerge a sleeve of golf balls in a bucket or bowl of warm water. We're not talking boiling hot water - that can damage the ball's construction. Aim for a temperature similar to a pleasant hot tub, around 100-110°F (38-43°C). Let them soak for about 10-15 minutes.

Dry them off thoroughly and put them in an insulated pouch or the pocket of your golf bag. This gives them a "thermal charge" that will help them stay warm longer as they slowly cool down to the ambient air temperature on the course.

Step 3: The Car Heater Trick

On your drive to the course, take the sleeve of balls you plan to use and place them in front of a heat vent in your car. This is a great way to top them off with warmth just before your round begins. Remember, this must be done *before* the start of your round. Once the round officially begins, using the cart's heater, for example, would be a rules violation.

During the Round: Legally Maintaining Warmth

Once you're on the course, the goal shifts from warming to maintaining. It’s all about slowing down the rate at which your golf ball gets cold.

The Pocket Rotation System

This is the tried-and-true method for every cold-weather golfer and falls perfectly within the rules. Your body is a wonderful, 8-watt furnace, and your pocket is the perfect place to keep a ball warm.

Here’s how to do it systematically:

  • At the start of a hole, after you’ve teed off, place the golf ball you intend to use on the next hole in your pants or jacket pocket.
  • Play the current hole with the ball that’s already in play.
  • When you finish the hole and walk to the next tee, simply swap the balls. Take the warm one from your pocket to tee off with, and place the cool one you just played with into that now-empty pocket.
  • Repeat this process on every hole.

By rotating two balls, you ensure you're always teeing off with an "up to temperature" ball that has been insulated by your体熱(body heat) for the last 15-20 minutes. It makes a noticeable difference.

Use an Insulated Pouch or Towel

Many modern golf bags come with a velvet-lined or insulated pocket specifically for valuables or drinks. This pocket is also a great place to store the rest of your golf balls. If your bag doesn’t have one, just wrapping your extra balls in a towel tucked inside a larger pocket will help insulate them from the cold air.

Commercially available golf ball warmers or pouches (the non-powered kind) do the same thing. They are typically fleece-lined sleeves that protect the balls from the elements, helping them retain whatever warmth they had from your house or car for longer.

What Not to Do: Common Myths and Big Mistakes

To keep you safe and playing by the rules, let's quickly cover the things you should absolutely avoid.

  • Don’t Microwave Your Golf Balls: This is incredibly dangerous. Microwaving a golf ball can cause the core to rapidly expand and potentially explode, damaging your microwave and creating a huge mess. It will also destroy the complex layers inside the ball, ruining its performance.
  • Don’t Boil Them: Just like microwaving, boiling water is far too hot. The extreme heat will compromise the integrity of the ball's cover and core, causing permanent damage.
  • Don’t Squeeze Them in a Hand Warmer: While keeping a chemical hand warmer in your pocket to warm your hands is a great idea, remember the rule. Do not use that hand warmer to intentionally heat your golf ball during the round, as this is using an "external agent" and is a breach of the rules.

Final Thoughts

Keeping your golf balls warm in cold weather is a legal and effective strategy to mitigate the distance loss that comes with a drop in temperature. By storing them inside, giving them a warm-up before you leave, and using your pockets to rotate balls during the round, you help the ball's core stay elastic and ready to perform.

While managing your equipment is part of the cold-weather challenge, so is managing your strategy on the course. For those tough decisions that pop up - like navigating a weird lie in semi-frozen rough or selecting the right club into a biting wind - having a trusted source of advice is invaluable. That’s where a tool like Caddie AI comes in handy. You can get an instant, personalized recommendation for any shot, club selection, or course strategy question, helping you eliminate guesswork and play with more confidence, no matter how cold it gets.

Spencer has been playing golf since he was a kid and has spent a lifetime chasing improvement. With over a decade of experience building successful tech products, he combined his love for golf and startups to create Caddie AI - the world's best AI golf app. Giving everyone an expert level coach in your pocket, available 24/7. His mission is simple: make world-class golf advice accessible to everyone, anytime.

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