Japan's monetary base grew 20.6 percent in October from a year earlier, marking the 33rd straight month of growth, the Bank of Japan said Wednesday.

The rise marked the 26th consecutive month of a double-digit increase, though the monetary base grew at a slightly slower pace than it did in September, when it rose 20.9 percent.

The average daily balance of the monetary base -- cash in circulation plus money in current accounts held at the central bank by financial institutions and Japan Post -- came to 103.601 trillion yen, the BOJ said.