Why haze matters more here than weather
It almost never rains. What changes is how far you can see.
It is not about rain. It is about how far you can see, and that is worst in the afternoon.
In most places the question about a scenic flight is whether it will be cancelled. In Dubai it very rarely is, because the weather is overwhelmingly clear and dry.
What changes through the year is visibility. In the hot months, heat rising off the desert and the city produces haze and shimmer that softens everything beyond a couple of miles. You will still see the Palm perfectly, because it is directly beneath you. What you will lose is the sharpness of the Marina and the skyline in the distance, and that is exactly the part of the photograph people care about.
In winter the air is dry, cool and stable, and on a good January morning the definition from the air is remarkable — you can pick out individual buildings twenty kilometres away.
Which produces one practical rule that works all year: if the pictures matter, take the earliest flight of the day. Haze builds as the ground heats, in every season.