Puigdemont moved to Belgium after the Catalan parliament unilaterally declared independence on October 27 following a banned referendum on the Spanish region's secession.
He is in Geneva this weekend to attend a human rights film festival.
Asked by the Tribune de Geneve newspaper if he would have done anything differently in the tension-filled days that followed the October 1 referendum, Puigdemont said he would not have waited until the 27th to make the independence call.
"There is one thing I would have done differently. On October 10, we had planned to proclaim independence, but I decided to suspend the definitive move to leave a door open for dialogue with the Spanish government," he said.
He explained that he was urged to do so by sources within the Spanish government.
"So I acted responsibly, even risky because everyone expected a clear proclamation. I chose to give a chance to dialogue.
"Unfortunately, it was a trap because there was no positive reaction from the government. If I were to do it over again, I would not have suspended the independence declaration," he said.
In a separate interview with Switzerland's public broadcaster aired earlier this week, Puigdemont said that a majority of Catalans might accept being part of a Swiss-style federal system in Spain, an apparent departure from the separatist bid for full independence.
He repeated that on Sunday, while clarifying that he had not travelled to Geneva to ask Swiss authorities to help facilitate talks with Madrid.
But he added that "anything that can be done abroad to support dialogue is in the interests of the Catalans, the Spanish and all Europeans."
Puigdemont faces arrest if he returns to Spain over his role in Catalonia's separatist push.
Spanish Prime Minister Mariano Rajoy's conservative government has dissolved Catalonia's parliament and imposed direct rule over the region.
The government in Madrid and Spain's highest court insist it is illegal and against the constitution for autonomous regions to declare independence.
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