Mars experiences dramatic and uneven seasons throughout its year due to its pronounced axial tilt and somewhat elliptical orbit. The axial tilt ensures that the seasons in the northern hemisphere are different from those in the south, and the eccentricity in Mars' orbit makes season length variable.
Just like Earth, Mars experiences four seasons – winter, spring, summer and fall – but the annual cycle of seasons takes 1.88 Earth years. The longest season on Mars, according to Universe Today, is the northern hemisphere's spring. This occurs when Mars' northern hemisphere is inclined toward the sun and the planet is about midway between the closest and farthest points in its orbit. This season lasts seven months. The shortest season on Mars is the northern hemisphere's winter, which lasts approximately four months.