
The increase was above the 2.6% forecast by 17 economists who responded to a Reuters poll.
The index rose 2.3% in April, according to a Reuters report.
The latest increase also surpassed the average rate of 1.9% for the period from January 2011 to May 2022.
Chief statistician Mohd Uzir Mahidin said food inflation continued to rise, reaching a new high of 5.2% — the highest since November 2011 — with 93% of all items in the group recording increases. Click here for more on food price increases
The transport index rose 3.9%, followed by restaurants and hotels at 3.7%, furnishings, household equipment and routine household maintenance (2.9%), miscellaneous goods and services (1.9%), and recreation services and culture (1.8%).
Housing, water, electricity, gas and other fuels registered an increase of 1.2%, while education edged up 1%.
The rate for alcoholic beverages and tobacco as well as health declined by 0.4% while the communications group remained unchanged from the same period of the preceding year.
Uzir said the increase in the transport group was largely due to the 63.8% increase in the price of RON97 unleaded petrol to RM4.26 per litre from RM2.60 in May 2021.
The increase in fuel prices was a direct impact from the 65.2% increase in the price of Brent crude oil to US$112.37 per barrel in May 2022.