The nation will top out in the mid-30s on Sunday with the interior enjoying the highest temperatures.
Abu Dhabi and Dubai are both expected to hit 33°C.
Along the coast and islands the maximum is likely to be 33°C with 85 per cent humidity, and the mountains are expected to hit 31°C with 60 per cent humidity.
The interior is expected to reach 35°C with up to 75 per cent humidity.
The National Centre of Meteorology said Sunday would be partly cloudy at times over some areas, especially Eastward and Westward with a chance of rainfall.
There will be light to moderate winds, freshening at times and causing blowing dust.
The sea will be moderate in the Arabian Gulf and slight to moderate in the Oman Sea
