Abu Dhabi, Dubai, Sharjah and Ajman are set for temperatures between 39°C and 40°C in the day and between 22°C and 27°C at night.
The mercury is expected to drop slightly throughout the week, with temperatures as low as 17°C and 19°C expected at night in Ras Al Khaimah and Umm Al Quwain.
The National Centre of Meteorology said it will be humid at night and early in the morning in most areas.
The centre said the weather would continue to be “fair to partly cloudy at times” for the remainder of week.
It is expected to be moderately windy with estimated speeds of between 10 kilometres an hour to 30kph.
Clouds could form over eastern areas of the Emirates between Tuesday and Friday.
Al Ain and parts of Sharjah emirate have been hit by rain in recent days.