Temperatures in Dubai and Abu Dhabi will reach the mid-20s on Thursday, and even the best temperatures are unlikely to break 30°C.
In Dubai the maximum is forecast to be only 23°C while Abu Dhabi will reach 25°C.
Along the coast and islands the maximum is likely to be 27°C with 90 per cent humidity, and the mountains are expected to hit 22°C with 70 per cent humidity.
The interior is expected to reach 29°C with up to 90 per cent humidity.
The National Centre of Meteorology said Thursday would be fair to partly cloudy in general.
There will be light to moderate winds.
The sea will be slight in the Arabian Gulf and in the Oman Sea
A humid night and into Friday morning brings probability of fog or mist formation over some coastal and internal areas.