From around June to December, Grenada's weather settles into a pattern that newcomers learn quickly: bright mornings, sudden heavy showers, and humidity that rarely drops at night. In the hills around Grand Etang, St Andrew and the interior of St John and St Mark it can rain most afternoons. Even on the drier south coast, a week of tropical waves can leave towels that never quite dry and a faint smell of mildew in the wardrobe.
None of this is dramatic, but it adds up. Leather shoes grow a grey bloom, books curl, rice and flour turn, and the corner behind the bed turns black. The good news is that most damp problems in a Grenadian home respond to a handful of habits that cost very little. This piece covers the routines that work, and the common mistakes that make things worse.
Why houses get damp in the wet season
Air in Grenada is humid all year, but the rainy season pushes relative humidity close to saturation for days at a time. Warm moist air settles into the coolest corners of a house, such as behind wardrobes against outside walls, under sinks, in cupboards that are never opened and in rooms where an air conditioner cools surfaces below the dew point. Water condenses there, and mould spores, which are always present, take hold within days.
Concrete block houses, the most common construction, hold moisture once wet and release it slowly. Leaky gutters, blocked roof drains and water splashing from a concrete apron back onto walls are frequent culprits. Wooden houses breathe better but suffer if louvres are kept shut. Understanding where the moisture comes from, rain driving in, damp rising or condensation forming inside, helps you choose the right fix rather than scrubbing the same wall every month.
Getting laundry dry when it rains every day
Wash early. Grenada's showers are often heaviest in the afternoon. Clothes that go out by eight in the morning have their best chance of drying in the sun and breeze before the clouds build.
Have a covered line. A line strung under a gallery, carport or veranda roof is the single most useful thing for rainy season laundry. It keeps clothes out of passing showers while letting the trade wind through. Many Grenadian homes have one for exactly this reason.
Spin longer and hang thinner. Use the highest spin your machine allows, and hang heavy items like jeans and towels with space between them. Folded over a line, they stay wet in the middle.
Do not leave wet loads waiting. A load that sits in the machine overnight can smell sour by morning. Hang it straight away, even indoors near a fan.
Use the dryer selectively. Electric dryers are expensive to run on Grenada's tariffs. Save them for towels and bedding when the weather is persistently wet, and use the sun whenever it appears.
Stopping mould before it starts
Prevention is cheaper than cleaning. These habits make the biggest difference in most homes.
- Move air. Open louvres and windows on dry mornings, and keep ceiling or pedestal fans running in rooms that feel heavy. Moving air stops condensation settling.
- Pull furniture off walls. Leave a gap of a few centimetres behind wardrobes, beds and bookcases on outside walls so air can circulate.
- Open cupboards. Leave wardrobe and kitchen cupboard doors ajar for an hour a day. Closed spaces are where mildew starts.
- Use absorbers. Moisture-absorbing tubs sold in supermarkets and hardware stores work well in closets. A low-wattage bulb left on in a closed cupboard is an older trick that also helps.
- Run the air conditioner on dry mode. Many split units have a dehumidify setting that removes moisture without over-cooling the room.
- Fix drips fast. Check gutters, roof drains and window seals at the start of the season. A small leak behind a wall causes far more damage than an obvious puddle.
Clothes, shoes, books and food
Leather shoes, bags and belts suffer first. Store them on open racks rather than in plastic bags, wipe them down monthly, and put silica gel sachets inside shoes you rarely wear. Clothes kept in sealed plastic for months often come out spotted; breathable cotton bags or open shelves are better. Good suits and formal wear for church, weddings and funerals should be aired in the sun every few weeks.
Books and papers curl and spot in damp rooms. Keep them off the floor and away from outside walls, and do not pack shelves tight. In the kitchen, flour, rice, sugar, crackers and spices clump or attract weevils as moisture rises. Airtight jars with good seals keep them dry, and buying smaller quantities more often helps. Salt in an open shaker becomes a solid lump; a few grains of rice in the shaker is the common fix.
Cleaning mould safely when it appears
Even careful households see some mould in a long wet spell. Deal with it early, before it spreads into paint and grout.
- Open windows and turn on a fan before starting, and wear rubber gloves.
- For hard surfaces such as tiles, painted walls and window frames, wipe with a diluted bleach solution or a household mould cleaner, following the label. Never mix bleach with ammonia or other cleaners.
- For fabric, soak in hot water with detergent, then dry in full sun; sunlight is one of the most effective mould treatments available.
- For leather, wipe with a damp cloth and a little white vinegar, then dry away from direct heat.
- Dry the area completely and leave a fan running for several hours.
- If mould returns within days to the same wall, look for a leak, a blocked gutter or rising damp, and get it repaired rather than cleaning again.
Mistakes that make damp worse
Sealing up the house. Closing every window to keep rain out traps humidity inside. Shut the side the rain is driving against and keep air moving elsewhere.
Painting over mould. Fresh paint over a damp patch traps the problem. Treat and dry the wall first, then use a mould-resistant paint.
Ignoring air conditioner drains. A blocked condensate pipe drips into walls or onto floors and creates a permanent damp spot. Check where it runs.
Drying clothes indoors without airflow. A rack of wet laundry in a closed bedroom raises humidity sharply. Dry indoors only with a fan and an open window nearby.
Watering plants against the house. Potted plants on a veranda pressed against a wall, and garden beds that soak the base of the house, keep walls damp. Leave a gap and keep drainage running away from the foundations.
Leaving wet shoes and bags in the car. A parked car in sun after rain is a sealed humid box. Umbrellas, gym bags and shoes left inside go mouldy within days.
Bedding, mattresses and sleep in humid weather
Mattresses absorb moisture from the air and from the people sleeping on them, and in long wet spells they can develop a musty smell or mould spots underneath. Lift the mattress and air the base every couple of weeks, stand it against a wall in a breezy room on a dry day, and use a breathable cotton mattress protector rather than a plastic one, which traps sweat. Slatted bed bases let air circulate far better than solid boards laid directly on a frame.
Change sheets more often in the wet season and dry them fully in the sun before putting them away. Pillows benefit from a day in direct sunlight every month. Spare bedding stored in a closed chest should be packed with moisture absorbers and aired before guests arrive, especially over the Christmas season when visitors from abroad often stay. Mosquito nets, still common in rural homes, should be washed and dried thoroughly; a damp net smells and attracts mildew quickly. For babies, keep cots away from outside walls and check the underside of the mattress regularly.
Frequently asked questions
When is the rainy season in Grenada?
The wetter part of the year generally runs from about June to December, overlapping with hurricane season. Rainfall is heaviest in the mountainous interior and lightest on the south coast and in Carriacou, but humidity rises across all three islands.
Is a dehumidifier worth buying?
In a bedroom or a closet that stays musty, a small dehumidifier can make a clear difference, especially for people with asthma or allergies. Consider running costs on Grenada electricity rates and empty the tank daily. In many homes, better airflow solves most of the problem.
Why do my towels smell even after drying?
Usually because they dried too slowly. Bacteria grow while fabric stays damp. Hang towels spread out in sun and wind, wash them hot occasionally, and avoid leaving damp towels folded in a bathroom without ventilation.
Can mould affect health?
For most healthy people, small amounts are an irritation. People with asthma, allergies or weakened immune systems can react more strongly. If someone in the house has persistent breathing problems in the wet season, speak to a doctor and deal with any mould promptly.
Does rainy season damp affect rented homes differently?
The habits are the same, but structural causes such as leaking roofs, blocked gutters and broken window seals are usually the landlord's responsibility. Report leaks early in writing so they can be fixed before mould spreads.
