Ice dam risk in Honolulu, HI
Will your roof get ice dams in Honolulu, HI?
0.0 dam days a winter
Almost never. An ordinary house in Honolulu sees 0.0 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Honolulu averages 0 inches of snow a year and about 0 days with snow on the ground. Too little lies on the roof for long. The conditions that make a dam need all three at once: snow, cold at the eave and heat above it.
Do you need to do anything in Honolulu?
- Nothing for ice dams. If you are buying here and an inspector mentions water at the eaves, ask what they saw: it is far more likely a gutter, flashing or drip-edge problem than ice.
Snowy places are not always the worst: why snowfall misleads.
Honolulu next to nearby towns
Honolulu ranks 1 of 1 Hawaii cities here for ice-dam days, the worst in the state.
- San Francisco, CA 2361 mi, 0.0 days
- Fortuna, CA 2377 mi, 0.0 days
- Eureka, CA 2382 mi, 0.0 days
- Ukiah, CA 2385 mi, 0.0 days
- Half Moon Bay, CA 2386 mi, 0.0 days
Where these numbers come from
NOAA 1991–2020 climate normals from Manoa Lyon Arbo 785.2, 3.0 miles from Honolulu. A dam day is a day with snow on the roof and freezing at the eave while heat or sun melts the snow above it. This describes a normal winter, not this one.