Humidity and Mould in Al Khor Homes: How to Clean It

Al Khor sits on the coast north of Doha, and its air holds noticeably more moisture. If you have seen black spots on a bedroom wall, around an AC vent or along the bathroom grout, humidity is the reason.

Quick answer: The coast around Al Khor averages about 64% humidity across the year, against about 56% around Doha, with about 101 very humid days a year against 48. In August the dew point reaches about 27°C, above most air-conditioning settings, so cool surfaces collect water. Clean small patches of mould with detergent and water, dry fully, and fix the moisture.

How Humid the Al Khor Coast Is

• Across the year: about 64% average humidity, against about 56% for the Doha area.
• Very humid days: about 101 a year averaging 70% or more, against about 48 around Doha.
• Summer: the dew point averages about 25°C in July and 27°C in August.
• Winter: humidity is highest in December and January, at about 70%.

One honest note: the weather model works on a grid about 25 km wide, and the grid point for Al Khor includes a stretch of sea. The figures describe coastal air, which is what homes near the water live with; inland areas are likely drier.

When the dew point outside is 27°C and the room is set to 24°C, every cold surface the air reaches is a place for water to condense.

Where Mould Starts

• Bathroom ceilings, grout and silicone edges
• AC vent grilles and the wall around them
• Window frames and the wall beneath windows
• Behind wardrobes and beds against outside walls

How to Clean It Safely

The US Environmental Protection Agency's guide to mould at home recommends scrubbing mould off hard surfaces with detergent and water, then drying them completely. Absorbent materials such as ceiling tiles and carpet may need replacing if they become mouldy, and larger areas, more than about 1 square metre, call for professional help.

• Wear gloves and ventilate the room.
• Scrub with detergent and water, then dry the surface fully.
• Never mix bleach with ammonia or acid cleaners. The mix releases toxic gas.
• Do not paint over mould. It grows back through the paint.
• Fix the moisture: run extractor fans, keep the AC running on humid days, and leave a gap between furniture and outside walls.

What This Means in Practice

Homes in Al Khor and along the coast at Al Thakhira and Simaisma benefit from a deep clean before summer and another in the autumn. Our deep clean covers surface mould on tiles, grout, silicone, window frames and AC grilles; mould inside walls or ducts is a job for a maintenance specialist, as our guide to AC duct cleaning vs house cleaning explains.

Frequently Asked Questions

How much does a deep clean cost in Al Khor?
House cleaning in Al Khor starts from QAR 50 an hour for regular cleaning, and a deep clean is priced by home size: QAR 400 for a studio, QAR 500 for one bedroom, QAR 650 for two, QAR 850 for a three-bedroom apartment and QAR 1,000 for a three-bedroom villa.

Why is there more mould here than in Doha?
The coast around Al Khor is more humid for more of the year, so surfaces stay damp for longer.

Can you remove black mould from grout?
Surface mould on grout and silicone usually cleans off. Silicone stained right through may need replacing.

Is bleach the best way to kill mould?
Detergent and water, then thorough drying, is the recommended first step on hard surfaces. Never mix bleach with ammonia or acid cleaners.

The Short Version

• The Al Khor coast averages about 64% humidity, with about 101 very humid days a year.
• Summer dew points reach about 27°C, above most AC settings.
• Clean small patches with detergent and water, dry fully, and fix the moisture.
• Regular cleaning in Al Khor starts from QAR 50 an hour; deep cleaning from QAR 400 for a studio.

Laundrykhalas cleans homes and offices across Al Khor and the northern towns. Offices can book commercial cleaning in Al Khor from QAR 60 an hour. Message us on WhatsApp before noon for same-day cleaning.

Source: daily mean relative humidity and dew point, 2015 to 2024, from the ERA5 reanalysis via Open-Meteo, for the model points nearest Al Khor (25.75°N, 51.50°E) and Doha (25.25°N, 51.50°E). ERA5 works on a grid about 25 km wide, so these figures describe areas, not individual buildings. Cleaning advice follows the US EPA's guidance on mould.