Pool swim season in Fort Pierce, FL

Fort Pierce, FL: how long the pool season really is

An unheated pool in Fort Pierce reaches 78°F in Jun to Oct, about 5 months a year. The air allows up to 12 swimmable months with a heater (all year).

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 Fort Pierce

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 Fort Pierce

Heat pump + cover: 12 of 12 possible months for about $820 a year all-in, which works out near $117 for each month it adds.

Before you pay for any heater, buy a solar cover: on its own it adds 3 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: Ft Pierce, 1.2 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.

Fort Pierce month by month: air, sun and pool water

Heating costs most in Jan (about $86 with a heat pump, $277 with gas). Sunshine peaks in May at 6.4 kWh/m²/day (NASA satellite data, 17.6 km grid cell). Highlighted months are swimmable with no heater.

How Fort Pierce compares with nearby cities

Fort Pierce ranks 145 of 173 Florida cities for unheated swim months; Port St. Lucie, Vero Beach, Stuart nearby get a longer season without a heater.