what is hotter the sun or lightning

What is hotter the sun or lightning? It is really the age-old question, isn’t it? But, how do you compare both lightning and the sun?

It may feel like a simple comparison but it is not.

Yes, the sun is a huge ball of flaming plasma providing heat and light.

So, it is obviously going to be hotter than lightning. But, is it really the case? So, what is hotter lightning or the sun?

Generally speaking, lightning is considered to be hotter than the sun, but the comparison is just with the temperature of the sun’s surface and not its core. 

Importance of Understanding Sun and Lightning Temperature

There are many scientific and practical applications that necessitate an awareness of solar and lightning temperatures.

Understanding the Sun and its effects, such as nuclear fusion, requires an understanding of its temperature.

importance of understanding sun and lightning temperature

It is similarly important for meteorological study and better safety measures to comprehend lightning temperature.

Wildfires, property destruction, and lives are all at risk when lightning strikes at dangerously high temperatures.

Knowing these temperatures allows us to devise more effective measures to safeguard against lightning damage. 

An Important Consideration

Studying lightning temperature also helps us learn more about the atmosphere and the components that have a role in the development and strength of electrical discharges.

Fact: Understanding the Sun and lightning temperatures helps us learn more about the natural world and develop new technologies. 

What is Hotter the Sun or Lightning?

lightning vs. sun temperature comparison

Lightning is a major source of property loss and can even start fires. The energy and heat released during a lightning strike are contributing factors.

There are instances when lightning is five times hotter than the sun. The temperature of the sun’s surface is roughly 10,000 degrees Fahrenheit.

However, a lightning bolt can produce temperatures of up to 50,000 degrees Fahrenheit.

Air is a poor heat conductor, therefore when electricity (lightning) travels across it, the surrounding air becomes incredibly hot.

Cloud-to-ground lightning, in particular, causes the most significant temperature increases because it travels through a greater volume of air before striking the ground. 

Why can Lightning be Hotter than the Sun?

lightning's higher temperature than the sun

To understand the comparison and why lightning is hotter, you have to examine different mechanisms.

For instance, it is important to consider:

  • The mechanism of production
  • The psychics determining temperatures
  • The temperature scales on which both lightning and the sun operate

Even if lightning strikes at temperatures higher than the Sun’s photosphere, it is vital to remember that this comparison only takes into account the photosphere.

It means it leaves out the Sun’s core and solar flares, which can reach temperatures several million degrees hotter. 

Formation and Temperature Influences

The formation of temperature can have a big impact in determining which of the two is hotter.

For instance:

The Sun
the sun composition

Hydrogen and helium make up the vast majority of the Sun’s mass and composition, making it a gaseous celestial body.

Hydrogen atoms undergo nuclear fusion due to their enormous gravitational pull, creating helium and releasing a great deal of energy as heat and light.

The core of the Sun, where temperatures reach about 27 million F, is the site of this nuclear fusion.

The Sun cools off as one goes away from its center.

The photosphere, the layer visible to the naked eye, averages 5,500 degrees Celsius in temperature.

Most of the Sun’s light and heat come from this layer, so it is fitting that our lightning analogy comes from here as well. 


The flow of charged particles causes electrical imbalances within a cloud or between a cloud and the Earth’s surface, leading to the formation of lightning.

If the disparity in electrical potential becomes too great, a lightning bolt will strike to equalize the two.

formation of lightning

Because of the high voltage and quick flow of electrical charge, the ambient air quickly becomes extremely hot, forming a plasma channel.

Five times hotter than the surface of the Sun, the temperatures within this tube can reach up to 30,000 degrees Celsius

Psychics of Temperature Generation

psychics of temperature generation

When comparing the sun and lightning, it is also essential to examine the physics of temperature generation for both. 

The Sun

The nuclear fusion that occurs at the Sun’s core is what causes it to radiate heat.

The process of nuclear fusion includes the release of a large quantity of energy as lighter atomic nuclei combine to generate heavier nuclei.

Hydrogen nuclei are able to overcome their electrostatic repulsion and unite to generate helium at the high temperatures and pressures present in the core.

Gamma rays are the primary form of energy emitted during this process; they are absorbed and re-emitted by particles in their immediate vicinity as they radiate away from the Sun.

Fact: The photosphere and other outer layers of the Sun receive energy via radiative diffusion and release it as thermal and luminous radiation. 
lightning discharge

The rapid passage of electrons and extremely high voltage of a lightning discharge cause high temperatures within the bolt.

Electrons gain momentum as they travel across the electric field produced by the potential difference, crashing into molecules of air and releasing that momentum in the form of a highly charged plasma channel.

This duct, also known as an “ionized path,” heats up to temperatures much above the Sun’s photosphere, causing it to glow visibly and generate enormous amounts of energy. 

Additional Factors to Consider When Comparing the Sun and Lightning

factors in sun-lightning comparison

You should consider some other factors as well to get a better idea of why experts believe that lightning is hotter than the sun’s surface.

For instance: 

Temperature Scales

As an absolute temperature scale, the Kelvin (K) scale can be used to measure the temperatures of both the Sun and lightning.

At absolute zero, the lowest conceivable temperature on the Kelvin scale, all molecular motion halts.

If you use this scale to compare the temperatures of the Sun’s photosphere and lightning, you will find that the latter reaches hotter levels.

Fact: Keep in mind, however, that the core of the Sun and solar flares reach temperatures far greater than those of lightning. 

Duration and Intensity of Heat

duration and intensity of heat

The Sun’s heat lasts far longer and is much stronger than that of lightning.

The Sun generates heat continuously through nuclear fusion, emitting light and heat pretty consistently.

Life on Earth would not be possible without the consistent heat and light provided by the sun’s surface, which has an average temperature of about 5,500 degrees Celsius.

Lightning, on the other hand, generates intense but fleeting heat.

Even though a lightning bolt can generate temperatures of up to 30,000 degrees Celsius, such extreme heat dissipates in a matter of moments.

When a lightning bolt strikes, it rapidly heats and cools the air around it, creating a shockwave that humans perceive as thunder.

Fact: Lightning strikes at a far hotter temperature than the Sun's photosphere, but they do not last long enough to have the same effect on Earth as the Sun's constant heat release. 

Practical Implications of High Temperatures of Lightning and the Sun

temperature implications of lightning and the sun

Getting more information about the temperatures of the Sun and what is generated by lightning can have many practical implications.

For instance: 

Solar Energy

The Sun is a steady and practically limitless source of energy due to its constant heat output.

With solar panels, we can collect the Sun’s rays and turn them into electricity for use in everything from homes to factories.

Solar energy is reliable and renewable because the photosphere maintains a generally constant temperature. 

Meteorology and Weather Forecasting

meteorology and weather forecasting

In meteorology and weather forecasting, knowing how hot lightning is and how it behaves is crucial.

Researchers have found that studying lightning’s temperature and how it forms has helped them improve their ability to forecast storm intensity.

This information is vital for issuing reliable weather warnings and preventing damage to persons and property caused by lightning. 

Safety Measures and Infrastructure Protection

safety measures and infrastructure protection

Understanding the extreme heat and brief duration of lightning strikes is critical for developing preventative measures and shielding critical infrastructure.

Lightning is dangerous because it may start wildfires, fry electrical equipment, and even kill people with its intense heat.

Engineers and legislators can take steps, such as installing lightning rods and grounding systems, if they have a better grasp of the temperature properties of lightning. 


What is hotter the sun or lightning? It turns out that lightning can get hotter than the sun’s surface.

Incredibly, lightning can get as hot as 50,000F, which is even hotter than the surface of the sun.

It seems crazy to think that a phenomenon occurring on Earth can generate more heat than our giant solar neighbor.

While lightning may have prevailed in this particular matchup, the sun is still the undisputed superior force because its core can have temperatures up to millions in Fahrenheit.