Translations:Adventist Youth Honors Answer Book/Recreation/Camping Skills III/28/en
From Pathfinder Wiki
Different types of tents are used for different purposes. A 4 season tent is going to do well for any type of conditions, where as other types of tents (most today are 3 season) don't do as well in all seasons (usually the winter season is not a good time to use such a tent). So, seasons are one way of signifying different types of tents.