The western ocean margins (near the east coast of a continent) are warmer around 20-30° N or S, but they are colder around 40-50° N, when compared to the eastern margins (west coasts). Also, subtropical deserts are distinctly hot, on average. The western ocean margins (near the east coast of a continent) are warmer around 20-30° N or S, but they are colder around 40-50° N, when compared to the eastern margins (west coasts). Also, subtropical deserts are distinctly hot, on average.