Green season on the South Pacific coast

People call it the rainy season, which makes it sound like six months of grey. It is not that. On this coast the green season runs roughly May to November, and most of it looks like a bright morning, a hot early afternoon, and then rain that arrives with some conviction and moves on.

For a guest that is often a better trip than February. For a house it is the half of the year that decides what condition it is in by Christmas.

What the rain does to a building

Humidity is the real agent, not the rainfall. Air that sits at high humidity for months finds every surface that was not sealed properly and every corner where air does not move. Mold does not announce itself. It arrives as a faint grey bloom on a north-facing wall, behind a wardrobe, along the grout in a bathroom nobody used.

Salt air does the rest. Anything metal within sight of the ocean is on a clock: hinges, screws, railings, the outdoor kitchen, the pool equipment, the bolts holding a gate on. A house three hundred metres from the water ages differently from one two kilometres inland, and it needs a different schedule.

Then there is the water itself. Heavy rain finds the roof detail that was fine last year, the gutter that has filled with leaf litter, the drainage that was adequate until the hillside above shifted slightly. None of these are dramatic on the day they start.

Why an empty house is the harder case

A booked house gets looked at constantly. Guests report the thing that is not working, cleaners see the room between stays, and the pool is being used and therefore being maintained.

An empty house in September gets none of that. Air conditioning that never runs lets seals dry out. Water sitting in pipes goes stagnant. A pool without circulation turns over in days rather than weeks. The insects that live here treat an unoccupied building as an opportunity, and they are not subtle about it.

This is why every house we look after is walked weekly whether it is booked or not. Not as a service line, but because the alternative is discovering three months of quiet deterioration in one visit.

What the green season is actually good for

Rates are lower and availability is real. The hills are genuinely spectacular in a way they are not in March, when everything has been dry for months. The rivers run. The waterfalls are worth the drive rather than merely photogenic.

And the whales are here. The southern humpback migration comes through from around August to October, which is the largest of the two runs that reach Bahía Ballena, and it falls squarely inside the green season. September and October bring the Festival de Ballenas y Delfines in Uvita.

So the quiet months are not uniformly quiet. Priced as one flat low season, a house gives away the weeks that people will pay for and still sits empty in the weeks they will not.

What an owner should expect to happen

Roofs and gutters checked before the rain rather than during it. Fumigation on a schedule instead of after a complaint. Pressure washing before mold sets into a stain that needs more than washing. Air conditioning and the water system run deliberately so the house does not seize up from disuse.

None of that is glamorous and none of it shows up in a photograph. It is most of the difference between a house that is still worth what you paid for it and one that is quietly not.