Pool swim season in Lake City, FL
Swim season in Lake City without a heater, and with one
An unheated pool in Lake City reaches 78°F in Jun to Sep, about 4 months a year. The air allows up to 9 swimmable months with a heater (Mar to Nov).
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Heater options for a Lake City pool, side by side
| Option | Months | Swimmable | Energy/yr | All-in/yr |
|---|---|---|---|---|
| No heater | 4 | Jun to Sep | $0 | $0 |
| Solar cover only | 6 | May to Oct | $0 | $50 |
| Solar panels + cover | 7 | Apr to Oct | $0 | $283 |
| Heat pump + cover | 9 | Mar to Nov | $284 | $834 |
| Gas heater + cover | 9 | Mar to Nov | $911 | $1,336 |
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 Lake City
Heat pump + cover: 9 of 9 possible months for about $834 a year all-in, which works out near $167 for each month it adds.
Before you pay for any heater, buy a solar cover: on its own it adds 2 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: Lake City 2 E, 2.9 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.
Lake City 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 | 63° | 52° | 3.1 | 53° | 59° | – | – |
| Feb | 67° | 56° | 3.8 | 55° | 61° | – | – |
| Mar | 73° | 61° | 4.9 | 60° | 66° | $131 | $412 |
| Apr | 79° | 67° | 5.9 | 67° | 73° | $64 | $218 |
| May | 85° | 73° | 6.4 | 73° | 79° | $5 | $17 |
| Jun | 88° | 78° | 5.9 | 79° | 85° | – | – |
| Jul | 90° | 80° | 5.9 | 82° | 88° | – | – |
| Aug | 89° | 80° | 5.4 | 82° | 88° | – | – |
| Sep | 86° | 77° | 4.9 | 80° | 86° | – | – |
| Oct | 79° | 69° | 4.2 | 74° | 80° | – | – |
| Nov | 71° | 60° | 3.5 | 65° | 71° | $84 | $264 |
| Dec | 66° | 55° | 2.8 | 57° | 63° | – | – |
Heating costs most in Mar (about $131 with a heat pump, $412 with gas). Sunshine peaks in May at 6.4 kWh/m²/day (NASA satellite data, 37.2 km grid cell). Highlighted months are swimmable with no heater.
How Lake City compares with nearby cities
Lake City ranks 173 of 173 Florida cities for unheated swim months; Green Cove Springs, Jacksonville nearby get a longer season without a heater.
| City | Distance | Unheated months | Heat pump months | Heat pump $/yr |
|---|---|---|---|---|
| Alachua, FL | 30 mi | 4 | 10 | $360 |
| Gainesville, FL | 39 mi | 4 | 10 | $364 |
| Green Cove Springs, FL | 59 mi | 5 | 9 | $151 |
| Valdosta, GA | 59 mi | 4 | 9 | $296 |
| Jacksonville, FL | 59 mi | 5 | 9 | $153 |
| Kingsland, GA | 68 mi | 4 | 9 | $346 |