Concerned about upcoming weather in Ishigaki

My partner and I fly into Tokyo tomorrow and to Ishigaki for the 6-12th, with plans to scuba dive on the 9th. Looking into the weather forecast on my phone I’m getting really nervous if we’re going to be able to do any of the things we wanted, which was all outdoor activities. Does anyone have any input on if the forecast on Apple is accurate for this area, or if we should rethink that portion of our trip??

by sofafaa