Hawaii weather year round chart. Haiku has dry periods in may june july august and september. All year climate weather averages in honolulu. Based on weather reports collected during 19852015.
Monthly averages honolulu longitude. The coldest month is january with an average maximum temperature of 260c 780f. The coldest day of the year is january 28 with an average low of 680f and high of 790f.
The best month to swim in the sea is in august when the average sea temperature is 270c 810f. January is the most wet month. The cool season lasts for 36 months from december 12 to march 31 with an average daily high temperature below 810f.
Annual weather averages near kauai island. The warmest month is august with an average maximum temperature of 300c 860f. 213187 average weather honolulu hi 96819.