The equivalent euro area average rate rose by 13 basis points to 2.21% in August - its highest level since at least August 2017 and almost double the rate this time last year.
France had the lowest average mortgage rate in the euro zone at 1.59%, followed by Luxembourg at 2%. Latvia and Greece had the highest rates. "It's almost a given that the ECB will raise rates by another 0.75% to 2% when it meets at the end of the month and rates may even reach close to 3% in early 2023," Mr Cassidy said.
But he added that the smaller, non-bank lenders such as Avant Money, ICS Mortgages and Finance Ireland have raised their rates by over 2% in some cases in recent months.