Pool swim season in Safety Harbor, FL

Swim season in Safety Harbor without a heater, and with one

An unheated pool in Safety Harbor reaches 78°F in May to Oct, about 6 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 Safety Harbor

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 Safety Harbor

Heat pump + cover: 12 of 12 possible months for about $852 a year all-in, which works out near $142 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: St Petersburg Clearwater International, 6.5 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.

Safety Harbor month by month: air, sun and pool water

Heating costs most in Jan (about $98 with a heat pump, $312 with gas). Sunshine peaks in May at 6.7 kWh/m²/day (NASA satellite data, 58.2 km grid cell). Highlighted months are swimmable with no heater.

How Safety Harbor compares with nearby cities

Safety Harbor ranks 63 of 173 Florida cities for unheated swim months, and no nearby city gets a longer unheated season.