Average Temperature in Honolulu by Month

Honolulu has a tropical rainforest climate, classified as Af in the Köppen system. The warmest month is July with an average high of 28°C, while the coldest month is January with lows dropping to 21°C. The annual temperature range of 7°C indicates a relatively stable climate year-round.

The driest month is December with only 7 rain days and 48mm of precipitation. For travellers, December through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 78% to 78% throughout the year.