Honolulu County, HI Roof Snow Load - 0 psf
Honolulu County, HI: your roof's ASCE 7 snow number, in plain English
Honolulu County's roofs are built to hold 0 psf of snow, the ASCE 7-22 figure a permit reviewer checks first.
In depth, not weight: that's roughly 0 inches of fresh, light snow, 0 inches of old, settled snow, or as little as 0 inches of solid ice - snow that heavy is rare here but ice from a freeze-thaw cycle adds up far faster than the depth suggests. Snow load is not a factor in roof design here at all; the ground snow load figure maps to zero.
Honolulu County, HI: quick facts
- Design roof snow load0 psf
- Ground snow load, ASCE 7 map0 psf
- National rank#2,491 of 2,758
- Hawaii rank#1 of 5
- Population998,747
- Annual snowfall, NOAA normal0 in.
- FIPS15003
Honolulu County by the numbers
Nationally that's #2,491 out of 2,758 rated counties, the top 90%; within Hawaii alone, Honolulu County ranks #1 of 5. Honolulu County's figure lands almost exactly on Hawaii's own county-average of 0 psf.
Honolulu County, FIPS 15003, is home to 998,747 people near 21.4614°N 158.202°W. Its 0 psf ground snow load figure is the map value; 0 psf is what a roof is actually designed for.
Honolulu County's snowfall, most winters
0 in. a year: that's Honolulu County's NOAA 1991-2020 snowfall normal, measured at MAKAHA CTRY CLUB 800.3, HI US (1.2 mi away). See the density guide.
Before you rely on Honolulu County's number
Treat the Honolulu County figure as a starting point, not a final answer: it assumes standard occupancy, a heated structure and a moderately sheltered site, per ASCE 7-22's own defaults. Exposed terrain, an unheated building or a steeper roof all shift the real number.
For a real application, skip the county number and go straight to the ASCE 7 Hazard Tool - enter your coordinates and it returns a site-specific figure a plan reviewer will recognize. (How this figure is calculated.)