Honolulu Weather In March
Honolulu Weather In March is a little warmer than February, although the difference is small. The normal range of temperatures is now between 70 and 80, and the chance of rain is just a little lower. Honolulu did once see over 15 inches of rain in one day in March, 1956, so there's the tiniest chance of you seeing bad weather. But you'd have a better chance of seeing snow in Las Vegas.
As always, all outdoor activities, unless you are skating, are possible in Honolulu in March.