ST. ANDREWS, Scotland (CNN) -- Rain and strong winds gave way to sunshine Saturday morning at St. Andrews, where the Group of 20 industrialized and developing countries met to discuss economic reform and climate change issues.

British Chancellor of the Exchequer Alistair Darling hosted the G-20 meeting, which also includes the International Monetary Fund and the World Bank.

It is the last time the G-20 plans to meet this year. It has the tricky task of balancing countries that still feel the wrath of recession, like the United Kingdom, and those whose economy is growing, such as Australia, CNN Correspondent Richard Quest said.

The final communique will probably repeat calls not to withdraw stimulus packages too early, a point reinforced by Darling, who called for no complacency among G-20 members, Quest said.

"It's absolutely essential that we take action and we start that process over this weekend," Darling said Friday night. "We need to see measures to support demand and to repair the financial system, because we can't yet be confident that global recovery has sufficient momentum to be sustainable, durable."

Saturday's meetings were taking place at the Fairmont Hotel in St. Andrews, near the famous golf course and overlooking the North Sea.

As golfers made the most of the rare sunshine outside, Darling and the others at the meeting planned to be busy inside.

"We have a lot to get through today," Darling said.

Saturday's agenda will focus on three main areas: structural reform of economies, stimulus and exit strategies for the current downturn, and financing of climate change, Quest said.

The last one -- paying for climate reform -- is an "urgent problem," Darling said.

He said it is important for countries, whether or not they disagree on the issue, to make at least some progress before the United Nations' climate change conference in Copenhagen, Denmark, next month.

"If there isn't an agreement on finance, if there isn't an agreement on contributions to make sure we can deal with this problem, then the Copenhagen agreement is going to be much, much more difficult," Darling said. "We won't have a final word today, because that's properly for the United Nations in Copenhagen, but I do think we need to make progress to show that we're willing to come to the table to play our part and to do whatever we can."

Also Saturday, those at the meeting planned to discuss maintaining support for their respective economies until they can recover from the downturn, Darling said.

"We continue to do that because, whilst clearly confidence levels have returned, we're still in a position where there's a lot of uncertainty, a lot of risks that need to be negotiated," he said.

"Just as we've shown in the last 12 months we can make a real difference when we're determined to do so, we also, I think, need to agree (on) a framework that will allow us to ensure that we have growth over the next decade, because with growth will come jobs and will come the increasing prosperity upon which the people we represent depend," he added.

Darling said G-20 countries must not accept years of low growth and employment, "but instead we raise our sights, we raise our ambition, and we build on what we've been able to do just in 12 short months."

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