AFP-- Sweden and Kuwait presented the measure that would also demand an immediate end to sieges, including in Eastern Ghouta where a bombing campaign by government forces has killed more than 240 civilians in five days.
The proposed measure came a day after the council failed to back an appeal by UN aid officials for a month-long pause in fighting.
Russian Ambassador Vassily Nebenzia said it was "not realistic" to impose a ceasefire because armed groups fighting Syrian President Bashar al-Assad's forces were unlikely to uphold it.
Negotiations on the proposed measure are to begin on Monday and diplomats said it could quickly come to a vote at the council.
It remained unclear whether Russia would resort to its veto to block the draft resolution proposing the 30-day truce, diplomats said.
The measure would decide "that all parties to the Syrian conflict shall immediately abide by a humanitarian pause and cessation of violence throughout Syria, for a period of 30 consecutive days," according to the text.
The draft demands that all sides allow medical evacuations 48 hours after the start of the humanitarian pause.
Convoys carrying food, medicine and other vital supplies would be authorized to make weekly deliveries to civilians in need, in particular to the 2.9 million Syrians living under siege or in hard-to-reach areas.
The UN humanitarian coordinator in Syria, Panos Moumtzis, on Tuesday called for the month-long ceasefire across Syria as fighting in Eastern Ghouta and Idlib escalated.
UNICEF said dozens of children have reportedly been killed this week and that life under such heavy violence had turned into a "living nightmare" for children.
The draft resolution expresses "outrage at the unacceptable level of violence escalating in several parts of the country," in particular in Eastern Ghouta and Idlib.
Sweden and Kuwait, two non-permanent council members, are leading efforts to address the humanitarian crisis in Syria at the top UN body.
More than 13.1 million Syrians are in need of humanitarian aid, including 6.1 million who have been displaced within the country during the nearly seven-year war