To be specific, according to the records the The best time to visit Hawaii For Weather is between March and September when it sees the least rain and the loftiest temperatures. This is the perfect time to enjoy the sand or water. It’s wetter and hardly cooler during the rest of the time, especially at altitude. Still, you may get the chance to see tropical sand with a snow- limited powder keg as a background. There are smaller callers from October to November.