The weather conditions on Sunday will be fair to partly cloudy, the National Centre of Meteorology said.
There is a probability of some convective clouds forming northward and eastward by afternoon, which may be associated with rainfall.
Temperatures are expected to reach 39°C across the UAE, with highs of 35°C in Abu Dhabi and Sharjah and 34°C in Dubai. Lows will range from 25°C in Sharjah to 26°C in Abu Dhabi and Dubai.
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Humidity levels are expected to rise overnight and into Monday morning across some coastal and inland areas, with a chance of fog or mist forming in these areas.
Light to moderate southeasterly winds will shift northwesterly, reaching speeds of 10 to 25 km/h and freshening at times to 40 km/h.
The sea will be slight to moderate in the Arabian Gulf and slight in the Oman Sea.