Pool swim season in Somerset, KY
When can you swim in an outdoor pool in Somerset, KY?
An unheated pool in Somerset reaches 78°F in Jul to Aug, about 2 months a year. The air allows up to 6 swimmable months with a heater (May to Oct).
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What each heater buys you in Somerset
| Option | Months | Swimmable | Energy/yr | All-in/yr |
|---|---|---|---|---|
| No heater | 2 | Jul to Aug | $0 | $0 |
| Solar cover only | 4 | Jun to Sep | $0 | $50 |
| Solar panels + cover | 5 | May to Sep | $0 | $283 |
| Heat pump + cover | 6 | May to Oct | $147 | $697 |
| Gas heater + cover | 6 | May to Oct | $288 | $713 |
For a 450 sq ft pool held at 80°F, at KY prices of 14.2¢/kWh electricity and $14/Mcf gas. All-in spreads the purchase over the equipment's life.
The cheapest way to the full season in Somerset
Solar panels + cover: 5 of 6 possible months for about $283 a year all-in, which works out near $94 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: Somerset 2 N, 2.2 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.
Somerset 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 | 45° | 37° | 2.0 | 38° | 44° | – | – |
| Feb | 50° | 41° | 2.7 | 39° | 45° | – | – |
| Mar | 59° | 49° | 3.8 | 45° | 51° | – | – |
| Apr | 70° | 59° | 5.1 | 56° | 62° | – | – |
| May | 77° | 67° | 5.7 | 66° | 72° | $68 | $141 |
| Jun | 84° | 74° | 6.3 | 74° | 80° | $2 | $4 |
| Jul | 87° | 78° | 6.0 | 79° | 85° | – | – |
| Aug | 86° | 77° | 5.6 | 80° | 86° | – | – |
| Sep | 81° | 70° | 4.6 | 75° | 81° | – | – |
| Oct | 71° | 59° | 3.5 | 65° | 71° | $77 | $143 |
| Nov | 59° | 48° | 2.5 | 53° | 59° | – | – |
| Dec | 49° | 41° | 1.8 | 43° | 49° | – | – |
Heating costs most in Oct (about $77 with a heat pump, $143 with gas). Sunshine peaks in Jun at 6.3 kWh/m²/day (NASA satellite data, 46.9 km grid cell). Highlighted months are swimmable with no heater.
How Somerset compares with nearby cities
Somerset ranks 14 of 42 Kentucky cities for unheated swim months, and no nearby city gets a longer unheated season.
| City | Distance | Unheated months | Heat pump months | Heat pump $/yr |
|---|---|---|---|---|
| Berea, KY | 39 mi | 2 | 6 | $221 |
| Danville, KY | 39 mi | 0 | 5 | $114 |
| Campbellsville, KY | 45 mi | 2 | 6 | $179 |
| Richmond, KY | 47 mi | 1 | 5 | $111 |
| Nicholasville, KY | 56 mi | 1 | 5 | $96 |
| Lexington-Fayette urban county, KY | 66 mi | 2 | 5 | $97 |