Weather In Hawaii In January 2025 Accuweather. Get the monthly weather forecast for kihei, hi, including daily high/low, historical averages, to help you plan ahead. Get the monthly weather forecast for honolulu, hi, including daily high/low, historical averages, to help you plan ahead.

Expect 26°c daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in hawaii in january. When booking your hawaiian vacation, the time of year you plan a visit can make a difference.