User blog comment:YowAnime/Weather Manipulation/@comment-108.83.222.210-20200815205727

Weather manipulation has been displayed by others before. The emperors do use it to bolster their reputations and help them in battle. Eneru was able to manipulate weather due to a mixture of both his devil fruit and his ark. Nami and the scientists who taught her also know how to manipulate and change the weather. It certainly is a useful skill for multiple reasons especially in a place as dangerous and unpredictable as the New World of the Grand Line.