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is outpacing the capacity of developing nations to cope with its devastating impacts, the Pakistani premier told on Tuesday, as his country reels from historic floods.

Talks at the UN climate conference in have been dominated by calls for wealthier nations to fulfil pledges to financially help poorer nations green their economies and build resilience.

"The world is burning up faster than our capacity for recovery," Prime Minister warned in his speech before the summit in the Red Sea resort of Sharm el-Sheikh.

"The current financing gap is too high to sustain any real recovery needs of those on the frontlines of climate catastrophe."

LIVE: In a Roundtable titled 'Climate Change and the Sustainability of Vulnerable Communities' led by , Prime Minister of Norway, Prime Minister of Pakistan and facilitated by Gim Huay Neo, Managing Director, Centre for Nature and Climate, .

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Sharif argued Pakistan exemplifies the extreme vulnerability of nations in the developing world struggling to grow their economies while confronting a perfect storm of inflation, soaring debt and energy shortages - all compounded by global warming.

Catastrophic floods in Pakistan in August coming on the heels of a crippling two-month heat wave earlier in the year upended the lives of 33 million people and inundated a third of the country, he said.

"Raging torrents" from melting glaciers in northern Pakistan ripped up thousands of kilometres (miles) of roads and railway tracks, Sharif added.

The floods, which also swamped vast areas of key farmland, incurred damages exceeding $30 billion, according to the World Bank.

Pakistan, already facing a cost-of-living crisis, a nose-diving rupee and dwindling foreign exchange reserves, saw inflation surge after the floods.

"We have redirected our meagre resources to meet basic needs of millions of households affected by these devastating floods," Sharif said. "And this all happened despite our very low carbon footprint."

Rich nations historically responsible for rising temperatures have fallen short in delivering climate finance on several fronts, the prime minister said.

A 12-year-old pledge made at COP15 to provide $100 billion a year to poorer countries by 2020 has still not been met and is $17 billion short.

A lightning-rod issue at COP27 is whether or not wealthy nations should commit to a separate financial facility for unavoidable impacts - from storms, heat waves and sea level rise, for example - known as "loss and damage".

"How on earth can one expect from us that we will undertake this gigantic task on our own?" Sharif said.

At a Monday meeting with Sharif, UN chief Antonio Guterres said the world needs to rethink the international financial system to provide debt relief to countries battered by climate impacts.

"Pakistan deserves massive support directly from the international community," Guterres said.