Monthly Humidity Averages for Hawaii

The humidity averages for each month are listed below for places in Hawaii.

The Morning relative humidity percentages are for 7 am and Afternoon levels are for 1 pm local standard time. All numbers are averages from decades of weather records.

Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold.

Average relative humidity (%) for Hilo, Hawaii

Daily		Morning	Afternoon
72	January	78	66
71	February	77	65
73	March	79	66
74	April	80	68
73	May	78	67
72	June	78	65
74	July	80	67
74	August	80	68
73	September	79	67
74	October	79	69
76	November	81	70
74	December	80	68
74	Annual	80	68

Average relative humidity (%) for Honolulu, Oahu

Daily		Morning	Afternoon
70	January	79	61
67	February	76	58
65	March	73	57
62	April	69	55
60	May	66	53
58	June	65	51
59	July	67	51
59	August	67	51
60	September	68	52
63	October	70	55
67	November	74	59
69	December	77	60
64	Annual	71	56

Average relative humidity (%) for Kahului, Maui

Daily		Morning	Afternoon
72	January	81	62
70	February	79	60
68	March	77	59
66	April	73	58
63	May	70	56
60	June	67	53
63	July	70	55
63	August	70	55
62	September	70	54
65	October	73	56
68	November	76	60
70	December	79	61
66	Annual	74	58

Average relative humidity (%) for Lihue, Kauai

Daily		Morning	Afternoon
74	January	81	66
72	February	79	65
72	March	78	66
72	April	76	67
71	May	75	66
70	June	74	65
70	July	75	65
70	August	75	65
71	September	76	65
72	October	77	67
74	November	79	69
74	December	80	68
73	Annual	78	67