When temperatures rise, most people focus on keeping bedrooms and living spaces cool. Yet the bathroom is one of the easiest rooms to overlook, even though it can quickly become warm, damp and slow to dry during hot weather.
Everyday routines such as long showers, damp towels and poor ventilation can leave excess moisture hanging in the air. Over time, this can make the room feel muggy and create the right conditions for mould to appear on sealant, grout, ceilings, windowsills and bath mats.
Online bathroom and heating retailer Plumbworld explores the bathroom habits to avoid during hot spells, plus practical ways to keep the space fresher, drier and more comfortable.
Switching the extractor fan off too soon
It can be tempting to turn the extractor fan off as soon as you leave the bathroom, but steam often lingers long after a shower has finished.
Keeping the fan running during and after bathing helps remove warm, damp air before it settles on surfaces. As a general habit, let it run for up to 30 minutes after a shower, especially if the room has no window.
Once privacy is no longer needed, leaving the bathroom door open can also improve airflow and help moisture clear more quickly.
Taking long, hot showers
A hot shower adds both heat and steam to a room that may already feel stuffy in warm weather. The longer the shower, the more moisture is released into the air.
Switching to a cooler shower and keeping it shorter can reduce steam and help the room dry out faster. This small change can make a noticeable difference in bathrooms that tend to feel muggy after use.
Leaving wet towels indoors
Wet towels, flannels and bath mats release moisture into the air as they dry. In smaller bathrooms, or rooms with limited ventilation, this can keep humidity levels high for longer.
Rather than leaving towels bunched up on hooks or folded over the side of the bath, hang them fully spread out so air can circulate around the fabric. A heated towel rail, radiator or well-ventilated spot can help them dry more effectively.
Where possible, dry towels outside or in a sunnier, airier part of the home.
Closing the door straight after showering
Shutting the bathroom door immediately after a shower traps warm, moist air inside the room. This can be a particular issue in windowless bathrooms or en-suites where airflow is already limited.
Once the bathroom is free, leave the door open to help the steam disperse. This works best alongside an extractor fan, as the aim is to remove moisture rather than simply move it into nearby rooms.
Not wiping down wet surfaces
Water droplets often remain on shower screens, tiles, grout and silicone long after the taps have been turned off. In hot weather, these damp surfaces can contribute to a humid feeling and may increase the chance of mould developing.
Keeping a squeegee or cloth in the bathroom makes it easier to remove excess water after showering. A quick wipe down of glass, tiles and sealant can help the room dry faster, especially after the last shower of the day.
Forgetting to clean fans and vents
Extractor fans are easy to ignore, but dust and grime can stop them working efficiently. If the grille or fan blades are blocked, steam may take much longer to clear.
Check the fan cover and visible vents regularly, then remove dust with a dry cloth. If the room still feels steamy even when the fan is running, it may be worth checking whether the fan needs maintenance or replacement.
Ignoring condensation
Condensation on mirrors, windows and tiles is a sign that moisture is sitting in the room. While it may seem harmless, leaving surfaces wet for long periods can contribute to damp patches, musty smells and mould-prone areas.
Wipe away condensation where you can and make sure the room is properly ventilated after showers and baths. Opening a window, keeping the extractor fan running or leaving the door open can all help moisture clear more quickly.
A quick post-shower routine
A simple routine can help keep the bathroom feeling fresher during hot weather. Run the extractor fan after showering, wipe down wet surfaces, hang towels and bath mats properly, and leave the door open once privacy is no longer needed.
Pay attention to areas that stay damp the longest, such as shower sealant, grout lines, window frames, bath mats, ceilings above showers and spaces behind toilets or bathroom furniture.
These small everyday habits can help reduce excess moisture, keep the bathroom more comfortable and lower the chances of mould appearing when the weather is hot and humid.
