The Sudanese army and the Rapid Support Forces (RSF) have agreed to a 24-hour ceasefire starting at 6pm local time (16:00 GMT).
The United Nations says more than 180 people have been killed since the fighting began on Saturday.
Many hospitals in Khartoum remain out of service, and medical personnel have been unable to reach healthcare facilities.
Nearly 2,000 people have been injured across the capital Khartoum and other regions.
The UN's envoy to Sudan says the warring sides are not open to talks.
Meanwhile, fighters have shelled hospitals, homes and power stations.

Al Jazeera’s Al Jazeera’s Raheela Mahomed reports.

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