Best location for Naha stay
Get on the monorail at airport to hotel, $3. Asato Station 50 ft from and above the hotel entry...use elevator or escalator. Got back to the airport the same way. Kokusai Dori, the main tourist street, is 8 minutes walk...I've done it several times. The Prefecture Museum and huge shopping mall under one airconditioned roof, Naha Main Place, is 15-20 min walk in the opposite direction from the hotel. Lots and lots of places to eat. Bathrooms are everywhere and free.
Naha was very humid during my stay in September. No thunder and lightning along with heavy rains as weather report predicted.