Pool swim season in Paris, TN

When can you swim in an outdoor pool in Paris, TN?

An unheated pool in Paris 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).

1. J
2. F
3. M
4. A
5. M
6. J
7. J
8. A
9. S
10. O
11. N
12. D

What each heater buys you in Paris

For a 450 sq ft pool held at 80°F, at TN prices of 13.8¢/kWh electricity and $12/Mcf gas. All-in spreads the purchase over the equipment's life.

The cheapest way to the full season in Paris

Heat pump + cover: 7 of 7 possible months for about $854 a year all-in, which works out near $171 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: Paris 2 SE, 0.8 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.

Paris month by month: air, sun and pool water

Heating costs most in Apr (about $163 with a heat pump, $255 with gas). Sunshine peaks in Jun at 6.4 kWh/m²/day (NASA satellite data, 28.7 km grid cell). Highlighted months are swimmable with no heater.

How Paris compares with nearby cities

Paris ranks 39 of 65 Tennessee cities for unheated swim months, and no nearby city gets a longer unheated season.