A lot of folks want to avoid wearing their hearing aids in wet weather because they don’t want them to receive water damage but you don’t have to worry about that.  There’s a reason I wear a hat.

https://www.amazon.com/Columbia-Mens-Bora-Booney-Grill/dp/B008FIFFY0/

That’s the hat I recommend.  That’s not an affiliate link so don’t worry about any ulterior motives to giving you the link to the hat.

deaf guy with red panda plushie wearing a bucket hat.
Example, me wearing the bucket hat which covers my ears for proper protection.