Reference annual cost
$135
$11 average per month · 924 kWh/year
ArcticSoak Score 84/100
Modeled planning range$71–$226
Peak monthAugust
Electricity input14.6¢/kWh
Vs. indexed-city median29% below
Scenario range
One city, three plausible setups
These are sensitivity scenarios—not a confidence interval. The reference setup is the ranking standard.
| Setup | Annual energy | Monthly average | Annual cost |
|---|---|---|---|
| Efficient insulated | 485 kWh | $6/mo | $71/yr |
| Reference consumer setup | 924 kWh | $11/mo | $135/yr |
| Lightly insulated / exposed | 1,544 kWh | $19/mo | $226/yr |
What colder targets change
Lower settings increase positive temperature degree-hours and chiller runtime. The same reference configuration is held constant.
| Target | Reference cost |
|---|---|
| 55°F | $127/year |
| 50°F | $135/year |
| 45°F | $146/year |
| 39°F | $161/year |
Data provenance
- Climate
- NOAA 1991–2020 U.S. Climate Normals
- Station
- SEATTLE BOEING FLD, WA US (USW00024234)
- Electricity
- U.S. EIA residential average retail price, 2026-08; state-level input
- Model
- ArcticSoak 2.0.0; generated 2026-10-26T18:40:35+00:00
Reference scenario
Monthly climate and cost profile
Daily low/high normals become positive cooling degree-hours; provisional pages use approximate profiles until NOAA retrieval succeeds.
| Month | Normal low–high | Energy | Cost |
|---|---|---|---|
| January | 37–49°F | 67 kWh | $10 |
| February | 37–51°F | 60 kWh | $9 |
| March | 39–55°F | 69 kWh | $10 |
| April | 44–60°F | 70 kWh | $10 |
| May | 49–66°F | 81 kWh | $12 |
| June | 54–71°F | 86 kWh | $13 |
| July | 58–77°F | 98 kWh | $14 |
| August | 58–77°F | 99 kWh | $14 |
| September | 54–72°F | 87 kWh | $13 |
| October | 46–61°F | 75 kWh | $11 |
| November | 40–53°F | 66 kWh | $10 |
| December | 36–48°F | 67 kWh | $10 |
Cite this page
ArcticSoak. “Cold Plunge Cost in Seattle, WA.” Model 2.0.0, dataset 2026-10-26. Accessed [date]. https://arcticsoak.com/cities/seattle-wa/
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