Dubai with Kids: What Works in Summer, and What to Skip
Dubai is one of the easier cities in the world to visit with children — everything is air-conditioned, connected, spotless and set up for families — with one enormous caveat, which is the heat.
Between June and September, outdoor plans with young children do not work between about ten in the morning and five in the evening. This is not a matter of stamina; the temperature is genuinely dangerous for small bodies. Plan around it rather than through it: outdoors early, indoors in the middle, outdoors again at dusk.
The good news is that Dubai has more genuinely good indoor attractions than almost anywhere, and several of them are better for children than for adults.

