Pool swim season in Kernersville, NC
When can you swim in an outdoor pool in Kernersville, NC?
An unheated pool in Kernersville reaches 78°F in Jul to Aug, about 2 months a year. The air allows up to 7 swimmable months with a heater (Apr to Oct).
- J
- F
- M
- A
- M
- J
- J
- A
- S
- O
- N
- D
Heater options for a Kernersville pool, side by side
| 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 | 6 | May to Oct | $0 | $283 |
| Heat pump + cover | 7 | Apr to Oct | $294 | $844 |
| Gas heater + cover | 7 | Apr to Oct | $616 | $1,041 |
For a 450 sq ft pool held at 80°F, at NC prices of 14.9¢/kWh electricity and $16/Mcf gas. All-in spreads the purchase over the equipment's life.
The cheapest way to the full season in Kernersville
Solar panels + cover: 6 of 7 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 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: Greensboro Airport, 7.8 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.
Kernersville 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 | 49° | 40° | 2.5 | 41° | 47° | – | – |
| Feb | 53° | 43° | 3.2 | 42° | 48° | – | – |
| Mar | 61° | 50° | 4.2 | 48° | 54° | – | – |
| Apr | 71° | 59° | 5.3 | 57° | 63° | $157 | $320 |
| May | 78° | 68° | 5.8 | 66° | 72° | $65 | $148 |
| Jun | 85° | 75° | 6.3 | 75° | 81° | – | – |
| Jul | 89° | 79° | 5.9 | 80° | 86° | – | – |
| Aug | 87° | 77° | 5.4 | 81° | 87° | – | – |
| Sep | 80° | 71° | 4.5 | 76° | 82° | – | – |
| Oct | 71° | 60° | 3.6 | 66° | 72° | $72 | $148 |
| Nov | 61° | 50° | 2.8 | 55° | 61° | – | – |
| Dec | 52° | 43° | 2.1 | 45° | 51° | – | – |
Heating costs most in Apr (about $157 with a heat pump, $320 with gas). Sunshine peaks in Jun at 6.3 kWh/m²/day (NASA satellite data, 57.6 km grid cell). Highlighted months are swimmable with no heater.
How Kernersville compares with nearby cities
Kernersville ranks 61 of 91 North Carolina cities for unheated swim months, and no nearby city gets a longer unheated season.
| City | Distance | Unheated months | Heat pump months | Heat pump $/yr |
|---|---|---|---|---|
| High Point, NC | 9 mi | 2 | 7 | $236 |
| Winston-Salem, NC | 10 mi | 2 | 7 | $296 |
| Summerfield, NC | 12 mi | 2 | 7 | $292 |
| Greensboro, NC | 14 mi | 2 | 7 | $283 |
| Archdale, NC | 16 mi | 2 | 7 | $236 |
| Thomasville, NC | 16 mi | 2 | 7 | $236 |