Cost to Run a Evaporative (Swamp) Cooler in Hawaii
Hawaii's average residential electricity rate is 52¢/kWh as of May 2026 — the 51st cheapest in the country, 183% above the U.S. average. At typical usage (8 hours/day), a evaporative (swamp) cooler here costs $50.59 per month.
Per hour
$0.21
at 100–800 W
Per day
$1.66
8 hours/day
Per month
$50.59
97 kWh
Per year
$607
1,168 kWh
By usage level in Hawaii
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.83 | $25.29 | $304 |
| Typical (8 hrs/day) | $1.66 | $50.59 | $607 |
| Heavy (16 hrs/day) | $3.33 | $101 | $1,215 |
Hawaii vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a evaporative (swamp) cooler in Hawaii?
At Hawaii's current average residential rate of 52¢/kWh (May 2026), a evaporative (swamp) cooler with typical usage costs about $1.66 per day, $50.59 per month, or $607 per year.
Is running a evaporative (swamp) cooler in Hawaii more expensive than average?
Yes. Hawaii's electricity costs about 183% more than the U.S. average, so the same usage costs $50.59 per month here versus $17.90 nationally.
What does electricity cost in Hawaii right now?
Hawaii residents pay an average of 52¢ per kWh as of May 2026 — the 51st cheapest rate of the 51 U.S. jurisdictions we track.