TOKYO, Oct 31 (Reuters) - Japan's Nikkei share average ended at a six-week high on Monday, tracking a strong finish on Wall Street in the previous session, with technology shares leading the charge.

The Nikkei index rose 1.78% to 27,587.46, its highest since Sept. 20, and marked its biggest one-day gain since Oct. 14. The broader Topix index climbed 1.6% to 1,929.43.

A robust, broad-based rally sent Wall Street to a sharply higher close on Friday, as encouraging economic data and sunnier forecasts fuelled investor risk appetite ahead of the Federal Reserve's much-anticipated policy meeting later this week.

"Japanese shares tracked the robust finish of the U.S. market and they are strong. But we can't be optimistic," said Shuji Hosoi, senior strategist at Daiwa Securities.

"There is speculation that a peak of Fed fund rates could be higher than expected and the U.S. Treasury yields rose on Friday. It is still uncertain how the Treasury yields will move, which is negative to equities."

U.S. Treasury yields rose on Friday after data showed underlying inflation pressures remain elevated, suggesting to the bond market that the Fed will stick with its aggressive interest rate hikes.

Japan's electrical appliances sector rose 2.78%, the most among the 33 industry sub-indexes on the Tokyo Stock Exchange, after its components gave robust forecasts.

Hitachi jumped 6.04 % after the conglomerate raised its profit forecast.

A similar move by Alps Alpine sent the car navigation systems maker surging about 15.5% to the top of the Nikkei.

Keyence jumped 8.92% after the sensor maker boosted its annual dividend payouts as it reported profit gains.

Technology investor SoftBank Group provided the biggest gain to the Nikkei, rising 6.21%. Uniqlo clothing store operator Fast Retailing gained 0.9% and chip-equipment maker Tokyo Electron climbed 1.31%.

There were 206 advancers on the Nikkei index against 15 decliners. (Reporting by Junko Fujita; Editing by Savio D'Souza)