


Climate
Astronomical Seasons


Our perception of the four seasons results from the change of the angle between the sunlight and the plane of the Equator (declination of the Sun). Due to the tilt of the Earth axis to its orbital plane this angle changes by 23,5° during each season.
An observer on Earth experiences the seasons in form of the Sun's apparent path across the sky. Most regions in Brazil can be characterized by just two perceptible seasons, a warm and humid summer and a cool and dry winter – Brazil Tours / Trekking.