Pool swim season in Morgan City, LA
When can you swim in an outdoor pool in Morgan City, LA?
An unheated pool in Morgan City reaches 78°F in Jun to Oct, about 5 months a year. The air allows up to 9 swimmable months with a heater (Mar to Nov).
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Heater options for a Morgan City pool, side by side
| Option | Months | Swimmable | Energy/yr | All-in/yr |
|---|---|---|---|---|
| No heater | 5 | Jun to Oct | $0 | $0 |
| Solar cover only | 6 | May to Oct | $0 | $50 |
| Solar panels + cover | 8 | Apr to Nov | $0 | $283 |
| Heat pump + cover | 9 | Mar to Nov | $175 | $725 |
| Gas heater + cover | 9 | Mar to Nov | $454 | $879 |
For a 450 sq ft pool held at 80°F, at LA prices of 13.3¢/kWh electricity and $17/Mcf gas. All-in spreads the purchase over the equipment's life.
The cheapest way to the full season in Morgan City
Solar panels + cover: 8 of 9 possible months for about $283 a year all-in, which works out near $94 for each month it adds.
Before you pay for any heater, buy a solar cover: on its own it adds 1 month 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: Morgan City, 2.1 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.
Morgan City 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 | 63° | 54° | 3.0 | 55° | 61° | – | – |
| Feb | 67° | 58° | 3.6 | 57° | 63° | – | – |
| Mar | 72° | 63° | 4.9 | 62° | 68° | $92 | $236 |
| Apr | 78° | 70° | 5.8 | 69° | 75° | $35 | $97 |
| May | 84° | 76° | 6.5 | 77° | 83° | – | – |
| Jun | 89° | 82° | 6.4 | 82° | 88° | – | – |
| Jul | 91° | 83° | 5.9 | 85° | 91° | – | – |
| Aug | 90° | 83° | 5.6 | 86° | 92° | – | – |
| Sep | 88° | 81° | 5.2 | 84° | 90° | – | – |
| Oct | 81° | 72° | 4.6 | 78° | 84° | – | – |
| Nov | 72° | 63° | 3.5 | 68° | 74° | $48 | $121 |
| Dec | 66° | 57° | 2.7 | 59° | 65° | – | – |
Heating costs most in Mar (about $92 with a heat pump, $236 with gas). Sunshine peaks in May at 6.5 kWh/m²/day (NASA satellite data, 37.9 km grid cell). Highlighted months are swimmable with no heater.
How Morgan City compares with nearby cities
Morgan City ranks 3 of 35 Louisiana cities for unheated swim months, and no nearby city gets a longer unheated season.
| City | Distance | Unheated months | Heat pump months | Heat pump $/yr |
|---|---|---|---|---|
| Thibodaux, LA | 23 mi | 4 | 9 | $171 |
| Houma, LA | 30 mi | 4 | 9 | $181 |
| Gonzales, LA | 38 mi | 4 | 9 | $232 |
| New Iberia, LA | 43 mi | 4 | 9 | $184 |
| Baton Rouge, LA | 51 mi | 4 | 9 | $265 |
| Broussard, LA | 54 mi | 4 | 9 | $201 |