Shamal season: dust is the enemy of a good finish
The shamal — the north-westerly wind that carries fine desert dust across the Gulf — blows hardest in early summer, typically late May through July, with a lesser winter season around December and January. For painters, shamal days are a quiet disaster. Airborne dust settles on tacky paint and reads as a gritty, sandpaper texture under raking light; it contaminates wet edges on exterior work; and it finds its way indoors through window seals and door gaps faster than most residents expect.
On dusty days a careful interior crew will wipe walls down with a damp cloth immediately before cutting in, keep windows shut with the AC filtering the air, and tack-rag any surface that has sat overnight between coats. On exteriors, an honest vendor will simply pause. If a crew is happy to roll a boundary wall while visibility on Sheikh Zayed Road is down to a few hundred metres, that tells you something about the finish you will get.