Kaunakakai is a census-designated place (CDP) in Maui County, Hawaiʻi, United States. It is the largest town on the island of Molokaʻi. The population was 3,425 at the 2010 census. It has the largest port on the island and the longest pier in Hawaii. The town was made famous in the 1930s by the song "The Cockeyed Mayor of Kaunakakai", beginning an ongoing tradition of designating an honorary mayor for the town.
It sounds like you may be talking about the particle "`o", used to mark the subject (or an appositive), especially when it is a proper noun. In this case, "Kaunakakai" isn't the subject of the sentence, the weather is.
I think, as a rough rule, if you're confident "i" goes in front of a particular noun in a particular sentence, you can be confident that "`o" does not also go in front of that noun.
Sorry if the phrasing above is awkward. I plead "too early; not enough coffee".