Pool swim season in Miamisburg, OH
When can you swim in an outdoor pool in Miamisburg, OH?
An unheated pool in Miamisburg never reaches 78°F in a normal year. It peaks around 77°F in Aug. The air allows up to 5 swimmable months with a heater (May to Sep).
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Heater options for a Miamisburg pool, side by side
| Option | Months | Swimmable | Energy/yr | All-in/yr |
|---|---|---|---|---|
| No heater | 0 | no month | $0 | $0 |
| Solar cover only | 3 | Jul to Sep | $0 | $50 |
| Solar panels + cover | 4 | Jun to Sep | $0 | $283 |
| Heat pump + cover | 5 | May to Sep | $182 | $732 |
| Gas heater + cover | 5 | May to Sep | $270 | $695 |
For a 450 sq ft pool held at 80°F, at OH prices of 18.8¢/kWh electricity and $14/Mcf gas. All-in spreads the purchase over the equipment's life.
The cheapest way to the full season in Miamisburg
Solar panels + cover: 4 of 5 possible months for about $283 a year all-in, which works out near $71 for each month it adds.
Before you pay for any heater, buy a solar cover: on its own it adds 3 months here for about $50 a year (why a cover comes first). If you get quotes, ask for gas as well as a heat pump: once the purchase price is counted, gas comes out cheaper all-in here (heat pump or gas).
Weather station: Dayton Wright Brothers Airport, 3.6 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.
Miamisburg month by month: air, sun and pool water
| Month | Air high | Air avg | Sun kWh/m²/day | Water, unheated | Water, covered | Heat pump $ | Gas $ |
|---|---|---|---|---|---|---|---|
| Jan | 39° | 31° | 1.8 | 32° | 38° | – | – |
| Feb | 43° | 34° | 2.6 | 32° | 38° | – | – |
| Mar | 53° | 43° | 3.6 | 39° | 45° | – | – |
| Apr | 65° | 54° | 4.9 | 50° | 56° | – | – |
| May | 75° | 64° | 5.5 | 62° | 68° | $138 | $201 |
| Jun | 83° | 72° | 6.2 | 71° | 77° | $27 | $43 |
| Jul | 86° | 75° | 6.1 | 77° | 83° | – | – |
| Aug | 85° | 74° | 5.5 | 77° | 83° | – | – |
| Sep | 79° | 67° | 4.6 | 72° | 78° | $17 | $26 |
| Oct | 67° | 56° | 3.2 | 62° | 68° | – | – |
| Nov | 54° | 44° | 2.2 | 49° | 55° | – | – |
| Dec | 43° | 35° | 1.5 | 38° | 44° | – | – |
Heating costs most in May (about $138 with a heat pump, $201 with gas). Sunshine peaks in Jun at 6.2 kWh/m²/day (NASA satellite data, 24.5 km grid cell). Highlighted months are swimmable with no heater.
How Miamisburg compares with nearby cities
Miamisburg ranks 24 of 176 Ohio cities for unheated swim months; Kettering nearby gets a longer season without a heater.
| City | Distance | Unheated months | Heat pump months | Heat pump $/yr |
|---|---|---|---|---|
| West Carrollton, OH | 3 mi | 0 | 5 | $182 |
| Springboro, OH | 5 mi | 0 | 5 | $182 |
| Franklin, OH | 5 mi | 0 | 5 | $233 |
| Centerville, OH | 7 mi | 0 | 5 | $182 |
| Kettering, OH | 8 mi | 1 | 5 | $181 |
| Middletown, OH | 10 mi | 0 | 5 | $233 |