Pool swim season in Miramar, FL
Swim season in Miramar without a heater, and with one
An unheated pool in Miramar reaches 78°F in May to Oct, about 6 months a year. The air allows up to 12 swimmable months with a heater (all year).
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What each heater buys you in Miramar
| Option | Months | Swimmable | Energy/yr | All-in/yr |
|---|---|---|---|---|
| No heater | 6 | May to Oct | $0 | $0 |
| Solar cover only | 10 | Mar to Dec | $0 | $50 |
| Solar panels + cover | 12 | all year | $0 | $283 |
| Heat pump + cover | 12 | all year | $78 | $628 |
| Gas heater + cover | 12 | all year | $277 | $702 |
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 Miramar
Solar panels + cover: 12 of 12 possible months for about $283 a year all-in, which works out near $47 for each month it adds.
Before you pay for any heater, buy a solar cover: on its own it adds 4 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: Miami Opa Locka Airport, 5.5 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.
Miramar 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 | 77° | 68° | 3.7 | 70° | 76° | $36 | $124 |
| Feb | 79° | 70° | 4.5 | 70° | 76° | $30 | $108 |
| Mar | 81° | 73° | 5.5 | 74° | 80° | $1 | $5 |
| Apr | 84° | 76° | 6.2 | 78° | 84° | – | – |
| May | 87° | 80° | 6.2 | 81° | 87° | – | – |
| Jun | 90° | 83° | 5.7 | 84° | 90° | – | – |
| Jul | 91° | 84° | 5.9 | 86° | 92° | – | – |
| Aug | 91° | 84° | 5.6 | 86° | 92° | – | – |
| Sep | 90° | 83° | 5.0 | 85° | 91° | – | – |
| Oct | 86° | 80° | 4.5 | 83° | 89° | – | – |
| Nov | 82° | 74° | 3.9 | 78° | 84° | – | – |
| Dec | 79° | 70° | 3.4 | 73° | 79° | $11 | $40 |
Heating costs most in Jan (about $36 with a heat pump, $124 with gas). Sunshine peaks in May at 6.2 kWh/m²/day (NASA satellite data, 55.0 km grid cell). Highlighted months are swimmable with no heater.
How Miramar compares with nearby cities
Miramar ranks 26 of 173 Florida cities for unheated swim months; Pembroke Pines, Cooper City nearby get a longer season without a heater.
| City | Distance | Unheated months | Heat pump months | Heat pump $/yr |
|---|---|---|---|---|
| Pembroke Pines, FL | 3 mi | 7 | 12 | $74 |
| Miami Lakes, FL | 4 mi | 6 | 12 | $78 |
| Hialeah Gardens, FL | 6 mi | 6 | 12 | $78 |
| Miami Gardens, FL | 6 mi | 6 | 12 | $108 |
| Cooper City, FL | 6 mi | 7 | 12 | $74 |
| Opa-locka, FL | 7 mi | 6 | 12 | $78 |