Does anyone know what the weather is like in Hawaii in May?
The weather is nice. Temps will be in 80’s. Constant breeze blowing. It does rain in Hawaii. I would take a poncho with me. If you are staying on Oahu, it could be nice & sunny one minute & raining the next. Not a total downpour just a quick shower especially in the mountains. The further away you get from the beach the more likely you are to run into rain showers. That is just the way the weather is in Hawaii. I hope you have fun.