Knowing whether to capitalize directional adjectives can be challenging. If you are referring to a group of proper nouns such as “the Southern States.” However, if instead you reference a general location, such as “the southern winds,” then the word southern should be lowercase.
What about south?
You should only capitalize directions, such as south, when you are referring to it as the proper noun, such as “in the South.” If you are merely referring to a direction, such as “go south on I-90,” then you should keep south lowercase.
To know what other words you should capitalize, try our free title capitalization tool.