What happens to a Naples pool while you are away for the summer?

Over a Naples summer, a pool left alone typically gains water rather than losing it. Evaporation in South Florida runs about 0.095 inches a day in December to about 0.184 inches a day in May (SFWMD, 2010)¹, which across a five month absence is roughly 20 to 28 inches gross. Rainfall over the same window is larger: the National Weather Service defines the rainy season as May 15 to October 15, and recorded Naples Municipal Airport at 42.48 inches for 2018, 6.37 inches above normal (NWS Miami, 2018)². The water level is therefore the least informative thing to check on return.

Does a pool left alone all summer lose water or gain it?

Take the arithmetic openly, because the conclusion is counterintuitive enough to deserve showing the work.

Evaporation first. The modeled band for South Florida runs from about 0.095 inches a day in December to about 0.184 inches a day in May (SFWMD, 2010)¹. A May to October absence is roughly 150 days. Even taking the upper end of that band the whole way through, gross evaporation lands somewhere around 20 to 28 inches. That is a model multiplied by a day count rather than a measurement of your pool, so treat it as an order of magnitude.

Now rainfall. The National Weather Service defines the South Florida rainy season as May 15 to October 15, and its 2018 summary recorded Naples Municipal Airport at 42.48 inches across that window, which it noted was 6.37 inches above normal (NWS Miami, 2018)². Naples East and Golden Gate recorded 53.46 inches in the same season.

Those two quantities are the same order of magnitude and the rain is the larger one. A screened pool catches less than an open one, and a screen enclosure changes the balance, but the direction usually holds.

The practical consequence is what matters. The water level is the first thing every returning owner looks at and it is close to the least informative thing on the property. If the pool is full, that is expected. If the pool is noticeably LOW after a wet season, that is the anomaly, and it is worth taking seriously rather than topping up and forgetting. We wrote the full month by month picture in Naples pool evaporation, month by month.

Why does the water look so much worse than after a short trip?

Rain is not neutral to a pool. Tens of inches of rainfall over a season dilutes everything you balanced before you left, and dilution moves several readings at once rather than one.

Organic load is the second input and it compounds the first. Leaves, pollen, insects and windblown debris accumulate continuously with nobody skimming, and organic material consumes sanitizer. So the sanitizer is being diluted and consumed at the same time.

Then circulation. If the pump ran the whole time, the water is usually recoverable and the filter is the thing that suffered, which is a filter repair question rather than a chemistry one. If power was interrupted, and hurricane season guarantees that is possible, the water sat still for however long that lasted. Standing water in Florida heat does what standing water does.

That combination is why a returning pool often looks dramatic. It is also why the drama is usually the least expensive part of the visit, because water is the one component that can be fully replaced or corrected. The finish underneath it may or may not have come through as well, which is a different question.

Green water and staining are separable problems, and people conflate them constantly. We covered why staining is usually not what owners assume in pool staining in Southwest Florida.

What does hurricane season do to a pool nobody is watching?

The relevant point is not that a storm might hit. It is that the response window belongs to somebody else, because you are not here.

Power interruption is the most common consequence and the least dramatic to look at. It is also the argument for a heat pump being on a schedule somebody can reach remotely rather than one nobody adjusts for six months. A pump that stops for several days in September leaves water that has been static through the warmest part of the year. Nothing about that is visible in a photograph a neighbor sends you.

Debris is the second. Screen enclosures fail in wind, and what was outside the cage ends up in the pool. Furniture is the part owners can still control from a distance, and what to do with it before a storm is not what most people are told. Heavier debris resting on a finish for weeks can mark it, and anything that reaches the skimmer or the pump basket while the system is running is a mechanical problem rather than a cleaning one.

Third is the thing owners actively get wrong from a distance, which is asking somebody to drain the pool ahead of a storm. That is close to the worst available instruction and we wrote a whole post on why in lowering pool water before a hurricane. If any water does have to come out, where it can legally go is its own rule. A pool is partly held down by the water in it.

If you are leaving for the season and want one arrangement in place, make it somebody local who can physically look at the property after a named storm, rather than a schedule of routine visits that stops when it matters most. Pool automation earns its place for the same reason, because it lets that person change a schedule or shut the pump down without standing at the pad.

Does your pool safety obligation pause while the house is empty?

This is the item most likely to be quietly out of compliance on a seasonal property, because the mechanism that fails is mechanical and nobody is there to see it fail.

Florida requires gates providing access to a pool to open outward away from the pool, be self-closing and equipped with a self-latching locking device, with the release mechanism on the pool side and placed where a young child cannot reach it (Florida Statutes, 2024)⁴. Self-closing is a condition rather than an installation. Hinges and closers live outdoors in salt air for five months without anyone testing them.

The other clause worth rereading is that a barrier may not be located where a permanent structure, equipment or similar object can be used to climb it (Florida Statutes, 2024)⁴. Over a summer, landscaping grows, furniture gets moved by wind, and bins end up in new places. A compliant barrier in May is not automatically a compliant barrier in November.

The check takes a minute and needs no tools. Open each gate fully, let go, and watch whether it closes and latches on its own, every time, from a full open position. Then walk the outside of the barrier looking for anything new that could be climbed.

We set out the full requirement, including the four alternatives to a barrier that Florida also accepts, in does Florida require a fence around your pool.

What is actually urgent when you get back, and what only looks urgent?

Sort what you are seeing into two piles, because returning owners consistently spend their attention on the wrong one.

The recoverable pile: water color, surface debris, a filter that needs attention, chemistry that is nowhere near balanced, a stained waterline. None of that is trivial to correct but all of it is correctable, and none of it changes what the pool is.

The structural pile: a crack that was not there in April, tile that has come loose along a run rather than in one spot, coping that now sounds hollow when tapped, a deck section that has dropped, or corrosion on the equipment pad at the bonding connections. Those are the ones worth photographing before anything is cleaned, because cleaning removes the evidence of where and how.

The distinction that matters most is crack versus craze. A structural crack and a cosmetic one look similar to an untrained eye and mean entirely different things, which is why we wrote telling a structural crack from a cosmetic one.

On the equipment pad specifically, salt air spends the summer working on metal whether the pump runs or not. Bonding lugs and bare copper are where that shows first, and it is covered in equipment corrosion in a flood zone.

Should the pool have been drained before you left?

The instinct is understandable. An empty pool sounds like a pool that cannot overflow, cannot go green and cannot be a problem, which feels like the responsible thing to do before locking the house.

The physics disagree. Groundwater exerts upward pressure on an empty or partly empty shell, and in this region the water table is close enough to the surface that the pressure is real rather than theoretical, particularly during the wet season that runs through the entire absence.

We covered the mechanism and what to do instead in the pre-storm context in lowering pool water before a hurricane, and the reasoning carries over to a seasonal departure without modification.

The correct posture before leaving is a full, balanced, circulating pool, with the equipment set to run and somebody local able to look at it. Not an empty one.

If a pool has already been drained and left, that is a situation to have looked at rather than simply refilled, because a shell that has been sitting empty through a wet season may have already moved.

Is coming back the right moment to decide on a remodel?

A well-kept pool hides a lot. Weekly service keeps the water right and the surfaces clean, and a finish that is genuinely at the end of its life can look acceptable for a long time under that regime.

Five months without that maintenance strips the presentation away. Roughness that was tolerable becomes obvious, staining settles into a surface that has lost its finish, and areas where the interior is thin show differently from areas where it is sound. The pool is telling you the truth about itself.

That is genuinely useful information for a decision, and it is available for a short window before service resumes and the presentation returns.

The decision it informs is usually whether this is another season of correction or whether the interior has reached the point where resurfacing is the honest answer. We laid out how to tell those apart in resurface or remodel.

It is also the practical time of year for the work itself. The pool is out of use, the household has just arrived and is not yet using it daily, and scheduling before the season proper is easier for everyone. If you want it looked at, ask while it still looks the way it looked when you opened the gate.