Why did Kino think it was good luck that it was windy when he walked along in the sand?

Kino is determined to find a way to earn the money to pay for Coyotito's care. After leaving the doctor's office, Kino takes his family to the beach where Kino keeps the canoe that was handed down to him from his grandfather. A canoe is a prized possession because it is a way to keep from starving.