Canada鈥檚 annual inflation rate dropped slightly to 6.9 per cent in September but the cost of groceries continues to climb.

In its latest consumer price index report, Statistics Canada said the slight deceleration from 7.0 per cent inflation in August is mostly attributed to lower gas prices, which fell by 7.4 per cent in September.

In a note, BMO chief economist Douglas Porter said the deceleration in headline inflation was smaller than what was expected.

鈥淏luntly, inflation did not ease as much as anticipated last month, even as gasoline costs took a big step back,鈥� he said.

Grocery prices rose at the fastest rate since August 1981, with prices up 11.4 per cent compared with a year ago.

Statistics Canada said food prices have outstripped the overall inflation rate for 10 consecutive months.

The federal agency says the rapidly rising grocery prices are due to weather conditions, higher prices for fertilizer and natural gas and the Russian invasion of Ukraine.

Wages continue to grow, though at a slower rate than prices. According to Statistics Canada, average wages were up 5.2 per cent in September compared with a year ago.

For homeowners or prospective buyers, higher interest rates are pushing up the cost of mortgage interest, while other costs rise at a slower pace.

With September marking the start of the academic year for many students, Statistics Canada said tuition fees were up 2.3 per cent compared with a year ago.

On a monthly basis, the consumer price index rose by 0.1 per cent.

The slight decline in the headline inflation rate is similar to what the U.S. experienced in September, with their headline inflation rate falling from 8.3 to 8.2 per cent.

The Bank of Canada will be monitoring the latest data on CPI ahead of its next interest rate announcement on next Wednesday, paying close attention to its preferred core measures of inflation.

According to Statistics Canada, these measures, which tend to provide less volatile readings, were unchanged from August.

The Bank of Canada is expected to deliver another interest rate increase next Wednesday, with forecasters split between a half and three-quarters of a percentage point hike.

The central bank, which has a mandate to maintain low and stable inflation, has been combating high inflation with higher interest rates.

It has raised its key interest rate five times this year, bringing it from 0.25 to 3.25 per cent.

The interest rate hikes feed into higher borrowing costs for Canadians and businesses, which slow spending in the economy.

The Bank of Canada is aiming to slow spending enough to bring inflation back to its two per cent target, though the full effect of these rate hikes will take time to work its way through the economy.

Still, the effect of higher interest rates is beginning to be felt in the housing market, which has been cooling after home prices reached a peak in February.

鈥擭ojoud Al Mallees, The Canadian Press