Temperatures in Dubai and Abu Dhabi will reach the mid-30s on Saturday, and even the best temperatures are unlikely to break 40°C.
In Dubai and Abu Dhabi, the forecast is for a 36°C maximum.
Along the coast and islands the maximum is likely to be 37°C with 85 per cent humidity, and the mountains are expected to hit 33°C with 65 per cent humidity.
The interior is expected to reach 39°C with up to 80 per cent humidity.
The National Centre of Meteorology said Saturday would be fair in general but with some clouds at times.
The light to moderate winds will be freshening at times.
The sea will be slight to moderate in the Arabian Gulf and in the Sea of Oman.