Pool swim season in DeBary, FL
When can you swim in an outdoor pool in DeBary, FL?
An unheated pool in DeBary reaches 78°F in Jun to Oct, about 5 months a year. The air allows up to 12 swimmable months with a heater (all year).
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Heater options for a DeBary pool, side by side
| Option | Months | Swimmable | Energy/yr | All-in/yr |
|---|---|---|---|---|
| No heater | 5 | Jun to Oct | $0 | $0 |
| Solar cover only | 8 | Apr to Nov | $0 | $50 |
| Solar panels + cover | 9 | Mar to Nov | $0 | $283 |
| Heat pump + cover | 12 | all year | $402 | $952 |
| Gas heater + cover | 12 | all year | $1,301 | $1,726 |
For a 450 sq ft pool held at 80°F, at FL prices of 15.3¢/kWh electricity and $25/Mcf gas. All-in spreads the purchase over the equipment's life.
The cheapest way to the full season in DeBary
Heat pump + cover: 12 of 12 possible months for about $952 a year all-in, which works out near $136 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 a heat pump sized to your pool's surface area; here it beats gas all-in (heat pump or gas).
Weather station: Sanford, 5.4 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.
DeBary 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 | 70° | 60° | 3.5 | 62° | 68° | $119 | $368 |
| Feb | 73° | 62° | 4.1 | 62° | 68° | $111 | $356 |
| Mar | 77° | 66° | 5.2 | 67° | 73° | $65 | $222 |
| Apr | 82° | 72° | 6.1 | 72° | 78° | $16 | $57 |
| May | 87° | 77° | 6.5 | 78° | 84° | – | – |
| Jun | 90° | 81° | 5.8 | 82° | 88° | – | – |
| Jul | 92° | 83° | 5.7 | 85° | 91° | – | – |
| Aug | 92° | 83° | 5.4 | 85° | 91° | – | – |
| Sep | 89° | 81° | 4.9 | 84° | 90° | – | – |
| Oct | 84° | 76° | 4.4 | 80° | 86° | – | – |
| Nov | 77° | 68° | 3.6 | 72° | 78° | $13 | $46 |
| Dec | 72° | 63° | 3.1 | 66° | 72° | $78 | $252 |
Heating costs most in Jan (about $119 with a heat pump, $368 with gas). Sunshine peaks in May at 6.5 kWh/m²/day (NASA satellite data, 45.7 km grid cell). Highlighted months are swimmable with no heater.
How DeBary compares with nearby cities
DeBary ranks 121 of 173 Florida cities for unheated swim months; Longwood nearby gets a longer season without a heater.
| City | Distance | Unheated months | Heat pump months | Heat pump $/yr |
|---|---|---|---|---|
| Orange City, FL | 5 mi | 4 | 11 | $416 |
| Sanford, FL | 7 mi | 5 | 12 | $402 |
| Deltona, FL | 7 mi | 5 | 12 | $402 |
| Lake Mary, FL | 8 mi | 5 | 12 | $402 |
| DeLand, FL | 10 mi | 4 | 11 | $423 |
| Longwood, FL | 13 mi | 6 | 12 | $366 |