The boiling point of water in Celsius is 100 degrees. This temperature is standard at sea level and represents the point at which water transitions from a liquid state to a gaseous state, known as steam. Boiling occurs when the vapor pressure of the liquid equals the surrounding atmospheric pressure. However, the boiling point can change with altitude; at higher elevations, where atmospheric pressure is lower, water boils at temperatures below 100 degrees Celsius. Understanding the boiling point of water is essential in various scientific, culinary, and industrial applications, influencing cooking times and processes involving heat.