Heater needed — water freezes solid for weeks

Winter bird bath water in Alaska

Across 13 Alaska cities, the typical winter night drops to 11.4°F and the day climbs to 25.3°F. Expect around 106 nights a year at 28°F or below, when a shallow bath freezes solid.

Gear for this job

De-icers for this climate

Our de-icers are 120V and sold for US and Canadian outlets. Check the wattage against the bath size on each listing.

Stainless steel pond and birdbath deicer
Winter Water

Stainless Steel Pond and Birdbath Deicer

$117.88
70W Trough and Bath Deicer
Winter Water

70W Trough and Bath Deicer

$68.74
Birdbath Deicer with Auto Shut-Off
Winter Water

Birdbath Deicer with Auto Shut-Off

$35.69
Cities averaged
13
Nights at or below 32°F
187 a year
Hard-freeze nights (≤28°F)
106 a year
Days the high stays ≤32°F
95 a year
Nights at or below 0°F
27 a year
Typical first freeze
September 29
Typical last freeze
May 16
Coldest winter lows
Badger (-14.2°F)
Mildest winter lows
Ketchikan (32.9°F)

Medians of each city's nearest NOAA 1991–2020 climate normals station. Your own yard can run several degrees colder in a low spot or warmer near a south wall.

Do you need a heater in Alaska?

Yes. With highs at or below freezing on about 95 days a year and 27 nights below zero, an unheated bath is ice for weeks. Choose a de-icer rated for the bath size, and a deeper basin keeps heat better than a shallow dish. Wind matters as much as temperature: put the bath out of the prevailing wind if you can.

Set up a heated bath safely

  • Plug into a GFCI-protected outdoor outlet. Use an outdoor-rated extension cord only if you have to, and keep the connection off the ground.
  • Choose a de-icer with a thermostat and automatic shut-off if the bath runs dry.
  • Keep water no deeper than 2 inches at the edge so small birds can stand.
  • Never add antifreeze, salt or glycerin. They harm birds and do not keep water drinkable.
  • Top up often. Heated water evaporates faster, and a dry de-icer can damage itself or a plastic basin.

Birds that stay through winter in Alaska

Related guides

Frequently asked

Do I need a heated bird bath in Alaska?

Yes, if you want birds to have water all winter. The typical Alaska city has 106 hard-freeze nights a year and 95 days when the high stays at or below freezing. An unheated bath will be solid ice for much of that time.

When does bird bath water start freezing in Alaska?

The most common first freeze date across Alaska cities is around September 29, and the last spring freeze is around May 16. Set up a heater a week or two before the first date and take it down after the last.

Which birds use a bird bath in winter in Alaska?

Feeder birds that stay through winter here include Black-capped Chickadee, Downy Woodpecker, Hairy Woodpecker, Red-breasted Nuthatch, Pine Siskin, Steller's Jay, Black-billed Magpie, Canada Jay. Open water draws birds that never visit seed feeders too.

Is a heated bird bath safe?

Use a de-icer with a thermostat that switches on only near freezing, plug it into a GFCI outdoor outlet, and keep the cord out of the water and away from mower paths. Never add antifreeze, salt or glycerin to bird water.

States with a similar winter