Is Ice Wet?

“Is ice wet?” sounds like a simple question, but the answer depends on what you mean by wet and how cold the ice is.

Is ice wet?

It depends on the definition and the temperature. Something is usually called wet when it is covered with or contains a liquid. Melting ice is coated in liquid water, so it is wet. Ice well below freezing has no visible liquid on it, but scientists have found that its surface can carry an extremely thin liquid-like layer, often called a quasi-liquid layer. Dry ice and pure steam are not wet. Whether water itself is wet depends on which definition you use.

This article explains what scientists know about the surface of ice, and whether snow, dry ice, steam and water count as wet.

Is Ice Wet? (Detailed Explanation)

Water molecules at the surface of ice are held less tightly than those deeper inside the crystal. Molecules also leave the surface as vapor, which is called sublimation, and arrive from the air, which is called vapor growth.

A change from solid to liquid or to vapor is called a phase transition.

Near the melting point, the outermost layers of molecules on ice can behave more like a liquid than a solid. This layer is extremely thin. Measurements described in Physics Today put its upper limit at 12 nm at -24°C and 70 nm at -0.7°C. A nanometer is a millionth of a millimeter, so the layer is far too thin to see.

The liquid layer on the surface of ice is actually called a quasi-liquid layer, or QLL.

According to research published in The Proceedings of the National Academy of Sciences (PNAS) journal:

The authors report that quasi-liquid layers are a metastable, transient state that forms while ice is growing from vapor or turning into vapor, and that the layers are absent at equilibrium.

In plain terms, this study found that the liquid-like layer appeared while the ice was growing from vapor or turning into vapor, and was absent when the ice and the vapor around it were in balance. Other researchers have reported a liquid-like layer under a wider range of conditions, and the details are still being worked out.

Is Ice Always Wet?

No. Whether ice is wet depends on its temperature and its surroundings.

Melting ice is covered in liquid water and is clearly wet. Freezing point depression is a different thing. It means that water with something dissolved in it freezes at a lower temperature than pure water.

Colder ice has no visible water on it. Any liquid-like layer on its surface is measured in nanometers.

Ice is slippery for more than one reason. The old explanation was that the pressure of a skate or shoe melts the ice. That cannot be the main cause. One early calculation found that a skate’s pressure lowers the melting point only to -3.5°C, yet people skate and ski at much lower temperatures. Researchers now point to two things: heat from friction, which melts a thin film of water as something slides, and loosely held, mobile water molecules at the ice surface. In one set of experiments, friction on ice was lowest at -7°C and high at -100°C.

Scientists are still working out exactly how the surface of ice behaves, and different measurement methods have given different answers.

Whatever the cause, ice is slippery enough to cause falls. On icy ground, OSHA advises wearing boots with good rubber treads, taking short steps and walking slowly.

Are Dry Ice, Snow, Steam and Water Wet?

What about other things people call ice, and the other forms water takes?

The sections below look at four of them:

• Dry ice
• Water
• Snow
• Steam

Is Dry Ice Wet?

Dry ice is the solid form of carbon dioxide, and it is often used to keep food cold or to create a foggy effect in special effects.

But what exactly is dry ice, and how does it differ from regular ice?

Dry ice is made by letting liquid carbon dioxide expand, which cools it and partly freezes it into a snow-like solid. It is much colder than regular ice.

Dry ice sublimes. That means it passes directly from a solid to a gas without melting, at -78.5°C (-109.3°F) at normal atmospheric pressure, according to Britannica.

When dry ice sublimes, it turns into carbon dioxide gas, not water vapor.

Because dry ice never becomes a liquid at normal pressure, it is not wet.

Handle dry ice with care. The New York State Department of Health warns that it can burn the skin in a way similar to frostbite, so wear insulated gloves. Never eat or swallow it. Use it only where there is fresh air, because the carbon dioxide gas it gives off can build up in a small space and cause unconsciousness or death. Do not store it in a sealed container, because the gas can build up pressure.

Is Snow Wet?

At first glance, snow may seem like it is simply frozen water.

Snow is a form of precipitation. The National Weather Service defines it as precipitation in the form of ice crystals.

Snow on the ground is made of ice crystals with a lot of air between them. Most of the volume of a snow layer is air, according to the National Snow and Ice Data Center. A dendrite is not an air pocket. The word means tree-like, and it describes snow crystals with branches and side branches.

Whether snow is wet depends on its temperature. Cold powder snow is dry. Snow that has started to melt has liquid water in it and is wet.

From an everyday point of view, snow that is melting in your hand is clearly wet.

All joking aside though, understanding how and why snow forms is an important first step for anyone looking to better understand the planet and its dynamic weather systems.

The next time you’re out building a snowman or frolicking in the fluffy white stuff, feel free to consider it from a scientific point of view, and maybe even feel a little wiser for doing so.

Is Steam Wet?

To many people, the answer to this question might seem self-evident: Of course steam is wet!

After all, steam is simply vaporized water, and water is well-known to be very wet indeed.

But steam is a gas, not a liquid.

Britannica describes steam as an odorless, invisible gas made of vaporized water.

The white cloud that people call steam is steam mixed with tiny droplets of liquid water. Those droplets are liquid, so they wet the surfaces they land on.

So pure steam is a gas and is not wet, but the white mist around it contains liquid droplets that do make things wet. Steam is also hot enough to scald, so keep hands and faces away from it.

Is Water Wet?

It depends on the definition.

What is wetter than water? Water is the very essence of a liquid.

But it gets more interesting when you cut into the definition of “wet.” If wet means a liquid state, water certainly meets the criteria.

However, if you think of wetness as merely a description, the answer takes a little more digging.

Technically speaking, water itself is not wet (as a specific description).

One scientific definition says wetness is the ability of a liquid to stick to the surface of a solid. By that definition, UC Santa Barbara ScienceLine notes, liquid water is not itself wet, but it makes other materials wet. A dictionary definition is broader: Merriam-Webster defines wet as consisting of, containing, covered with, or soaked with liquid. By that definition, water is wet.

In short, whether water is wet really depends on your definition.

Here is an entertaining video that explains a little more about the “controversial” argument that water might not be wet:

Is Ice Wet in the Freezer?

Ice in a freezer is not wet in the everyday sense. A home freezer should be at 0°F (-18°C), which is well below freezing, so there is no liquid water on the cubes.

If a cube feels wet when you pick it up, that is because your warm fingers melt its surface.

At the microscopic scale, some measurements have found a liquid-like layer on ice even at freezer temperatures, with an upper limit of about 12 nm at -24°C. That is far too thin to see or to count as wet in the usual sense.

So the answer is no in the everyday sense, and only arguably yes at the microscopic scale.

Is Ice Cream Wet?

Ice cream falls into some unique middle ground between liquids and solids.

Ice cream melts into a liquid, so in the everyday sense it is wet as soon as it starts to melt.

Can You Make Ice Wetter?

There are at least three ways to make ice wetter.

Those three ways:

• Add water
• Add pressure
• Add impurities

Add Water

By adding water, you literally add wetness to wetness, which equals greater wetness.

Ice with liquid water on it is wet by any definition.

Add Pressure

Depending on the amount of heat and pressure present, water molecules can arrange themselves into different structures.

Ordinary ice is called hexagonal ice. Pressure lowers its melting point a little, but the effect is small: one calculation for an ice skate gave a melting point of only -3.5°C. Very high pressures turn ice into denser forms with different crystal structures, but these are different solids, not wetter ice.

Add Impurities

Add impurities to the water before it freezes.

Water with something dissolved in it freezes at a lower temperature than pure water, as Purdue University explains. Ice made from it also starts to melt, and get wet, at a lower temperature.

Final Thoughts: Is Ice Wet?

The bottom line: melting ice is wet. Very cold ice is not wet in the everyday sense, although its surface can carry a liquid-like layer only nanometers thick.

For more articles on cool topics (pardon the pun), check out the hand-selected articles below.

Related posts:

• Why Do Bullets Spin on Ice?
• Best Glue for Cold Weather
• Are Overalls Good for Cold Weather?
• What Is Cold Pressed Juice?

Sources

Proceedings of the National Academy of Sciences (thermodynamic origin of surface melting on ice crystals, 2016)
Physics Today (why is ice slippery, 2005)
Phys.org (molecular insight into the slipperiness of ice, 2018)
UC Santa Barbara ScienceLine (is water wet)
Merriam-Webster (wet)
Britannica (carbon dioxide)
Britannica (steam)
National Weather Service (glossary: snow)
National Snow and Ice Data Center (science of snow)
New York State Department of Health (dry ice)
OSHA (winter weather hazards)
Purdue University (freezing point depression)
FDA (storing food safely)

Reviewed October 2026. We rewrote the main answer, which misread the study it cited, and corrected the sections on dry ice, snow, steam and why ice is slippery. We also added dry ice, steam and icy-ground safety notes, using the Proceedings of the National Academy of Sciences, Physics Today, Britannica, the National Weather Service and the New York State Department of Health.