(Recasts paragraph 1, updates with closing prices)

TOKYO, March 31 (Reuters) - Japan's Nikkei share average

closed near an eight-month low on Monday, following sharp losses

on Wall Street in the previous session, as investors assessed

the risk of imminent U.S. trade tariffs.

The Nikkei fell 4.05% to 35,617.56, its lowest close

since August 6, the day after the index posted its biggest

single-day rout since the 1987 Black Monday crash.

The index posted its biggest daily decline since September

30.

The broader Topix fell 3.5% to 2,658.73.

"Investors' sentiment was weakened as there is so much

uncertainty ahead of the announcement on reciprocal tariffs,"

said Hiroyuki Ueno, chief strategist at Sumitomo Mitsui Trust

Asset Management.

"They were in a risk-off mode and offloaded what they had

bought. But this week is the toughest, and they will start

buying them back once the outlook becomes clear."

U.S. President Donald Trump has promised to unveil a massive

tariff plan on Wednesday, which he has dubbed "Liberation Day."

He has already imposed tariffs on aluminum, steel and autos,

along with increased tariffs on all goods from China.

Trump said on Sunday reciprocal tariffs that he is set to

announce will include all nations, not just a smaller group of

10 to 15 countries with the biggest trade imbalances.

Wall Street stocks ended sharply lower on Friday, with

sell-offs in tech giants such as Amazon ( AMZN ) and Microsoft ( MSFT )

, after U.S. data fuelled fears of weak economic growth

and high inflation as the Trump administration ratchets up

tariffs.

In Japan, Uniqlo-brand owner Fast Retailing ( FRCOF )

lost 3.67% on Monday, while chip-related Tokyo Electron ( TOELF )

and Advantest ( ADTTF ) slipped 6.57% and 7.65%, respectively.

Shares of Mitsubishi UFJ Financial Group ( MUFG ) and

Sumitomo Mitsui Financial Group ( SMFG ) lost 4.62% and 3.58%,

respectively.

Automakers fell, with Toyota Motor ( TM ) and Honda Motor ( HMC )

losing 3.13% and 3.97%, respectively.

All 33 industry sub-indexes on the Tokyo Stock Exchange

declined, while the Nikkei volatility index surged 5.8

points to 28.15, marking its largest gain since September 4.

All but one of 225 components of the Nikkei index fell, with

chipmaker Renesas Electronics ( RNECF ) tanking 11.21%.

Home interior goods retailer Nitori Holdings ( NCLTF ) rose

2.28%.