KAPOLEI, Hawaii — More than 1,100 National Guard soldiers and airmen in Hawaii — and thousands in other states — will be living with 20 percent less pay over the next three months as the Defense Department carries out automatic federal budget cuts.
Guard members will be furloughed for one day a week starting Monday, so helicopter pilots and mechanics, pay and finance clerks and others who keep the guard operating will have eight hours less each week to do their jobs.
It is not clear precisely what effects the unprecedented cuts will have. They could, however, make it more difficult for the guard to fly helicopters to help put out wildfires or rush to the scene of natural disasters.
‘‘Our general sense is that short-term, it’s going to be a terrible hardship for those soldiers, airmen and their families. But if it goes on for any length of time, that may have a negative impact on our readiness and our ability to respond,’’ said Hawaii National Guard spokesman Lieutenant Colonel Chuck Anthony.
The military’s furloughs were only supposed to involve civilians, but large numbers of National Guard members who wear Army and Air Force uniforms full time will experience them as well. The National Guard added military technicians to the furlough list in May, after Defense Secretary Chuck Hagel gave official notice to begin furloughs for civilians.
It is not immediately clear how many uniformed personnel will be affected nationwide.
Florida Governor Rick Scott said the furloughs, which will affect nearly 1,000 guardsmen in his state, are his biggest concern for this summer’s hurricane season.
Some units will be exempt, such as the 169th Aircraft Control and Warning Squadron responsible for tracking aircraft in the skies above Hawaii. The 199th Fighter Squadron, which protects Hawaii airspace with F-22s, will be somewhat shielded from the effects of the cuts because it has a large number of active duty airmen.
But many others will have to squeeze 40 hours of work into 32 hours, and receive one-fifth less pay.
‘‘We don’t know what will fall by the wayside because we’ve never had to do this before,’’ Anthony said.