Despite starting off mainly sunny on Wednesday, the UAE is set for dust storms and possibly some fog later in the day, and will become humid by evening.
The National Centre for Meteorology forecasts temperatures in Abu Dhabi to range from 31°C to 44°C, and from 33°C to 45°C in Dubai.
The weather bureau says winds will be light to moderate.
Inland and by the coast, humidity could reach 85 per cent, while in mountainous areas it should hit a maximum of 75 per cent.
Conditions are expected to be slight to moderate in the Arabian Gulf and in the Sea of Oman.