Pool swim season in Fall River, MA

When can you swim in an outdoor pool in Fall River, MA?

An unheated pool in Fall River never reaches 78°F in a normal year. It peaks around 74°F in Aug. The air allows up to 4 swimmable months with a heater (Jun to Sep).

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

Heater options for a Fall River pool, side by side

For a 450 sq ft pool held at 80°F, at MA prices of 30.2¢/kWh electricity and $25/Mcf gas. All-in spreads the purchase over the equipment's life.

The cheapest way to the full season in Fall River

Solar panels + cover: 4 of 4 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: NEW Bedford Municipal Airport, 7.7 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.

Fall River month by month: air, sun and pool water

Heating costs most in Jun (about $168 with a heat pump, $283 with gas). Sunshine peaks in Jul at 6.2 kWh/m²/day (NASA satellite data, 42.0 km grid cell). Highlighted months are swimmable with no heater.

How Fall River compares with nearby cities

Fall River ranks 34 of 58 Massachusetts cities for unheated swim months, and no nearby city gets a longer unheated season.