Winter bird bath water in California
Across 308 California cities, the typical winter night drops to 41°F and the day climbs to 60.1°F. Ice forms on cold mornings but usually melts by afternoon.
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
A stainless steel dome heater that sits in a pond or large birdbath and keeps a patch of water open through freezing weather, so birds can still drink and bathe in winter. It has a built-in thermostat and a dry-run cut-off that switches the heater off if it's left out of water. Dimensions: 180 mm (7.1 in) across, 83.9 mm (3.3 in) tall Material: stainless steel dome, black power cord Power options: 100W, 150W, 200W, 250W or 300W. Smaller birdbaths need less power; ponds and very cold areas need more. Weight: about 1.9 kg (4.1 lb) Plug: US 3-prong, 120V Use with a GFCI-protected outdoor outlet. Keep the cord out of reach of pets and away from where people walk.
70W Trough and Bath Deicer
A 70-watt submersible deicer that keeps a small open-water area in a bird bath or livestock trough through hard freezes. Runs on standard 120V US household power with a thermostatic control that switches on near freezing and off when the water is ice-free, so it does not run continuously.Specs: 70 W, 120V US plug, submersible sealed element, black housing. Sized for small baths and troughs; it keeps a drinking hole open rather than warming the whole bath — birds only need liquid water, not warm water.Safety note: this is an electrical appliance used outdoors in water. We list it only once a valid UL/ETL safety certification is confirmed. Always plug into a GFCI-protected outdoor outlet and route the cord so birds and pets cannot chew it.
Birdbath Deicer with Auto Shut-Off
A compact birdbath deicer with a built-in thermostat and automatic shut-off. It sits in the basin and keeps a patch of water ice-free so birds can drink through winter — liquid water is harder for birds to find than food in a hard freeze.Specs: thermostatically controlled (activates near freezing, shuts off automatically), US plug, white housing that blends into light-colored basins.Safety note: this is an electrical appliance used outdoors in water. We list it only once a valid UL/ETL safety certification is confirmed. Always use a GFCI-protected outdoor outlet, and never run it in a dry basin.
- Cities averaged
- 308
- Nights at or below 32°F
- 9 a year
- Hard-freeze nights (≤28°F)
- 0 a year
- Typical first freeze
- December 5
- Typical last freeze
- January 31
- Coldest winter lows
- Truckee (16.3°F)
- Mildest winter lows
- West Hollywood (51.5°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 California?
It depends where you are. 6 of 308 cities here average ten or more hard-freeze nights, with the coldest lows around Truckee. In the mild parts, pouring warm (not hot) water onto the ice in the morning is enough. In the colder parts, a small thermostatic de-icer saves you the daily trip.
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 California
These feeder birds are present here in winter, either all year or only for the cold months. Each link shows the feeder style that suits it.
- Cedar Waxwingwinter visitor
- Golden-crowned Sparrowwinter visitor
- Varied Thrushwinter visitor
- Pine Grosbeakwinter visitor
- Merlinwinter visitor
- Lapland Longspurwinter visitor
- Downy Woodpecker
- Hairy Woodpecker
- American Goldfinch
- White-breasted Nuthatch
- House Finch
- Purple Finch
- Mourning Dove
- American Robin
- Dark-eyed Junco
- Song Sparrow
Related guides
Frequently asked
Do I need a heated bird bath in California?
Optional. The typical California city gets 0 hard-freeze nights (28°F or colder) a year, and daytime highs average 60.1°F in winter, so ice usually melts by midday. A de-icer helps on cold mornings and during the odd cold snap.
When does bird bath water start freezing in California?
The most common first freeze date across California cities is around December 5, and the last spring freeze is around January 31. 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 California?
Feeder birds that stay through winter here include Cedar Waxwing, Golden-crowned Sparrow, Varied Thrush, Pine Grosbeak, Merlin, Lapland Longspur, Downy Woodpecker, Hairy Woodpecker. 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.