Volcan de Fuego, which means "Volcano of Fire", exploded violently on Sunday, shooting thick plumes of ash miles into the sky that rained down on residents and sending superheated pyroclastic and lava flows barreling through nearby towns.
In San Miguel Los Lotes, eight to ten feet of volcanic ash buried homes and people.
The foreign ministry said disaster management agency CONRED would help determine any such request.
Prime Minister Benjamin Netanyahu on Tuesday night spoke with Guatemalan President Jimmy Morales, and offered him condolences for the deaths caused by the country's catastrophic volcanic eruption.
Guatemala's Volcan de Fuego erupted Sunday, killing at least 75 people.
Eddy Sanchez, the head of Guatemala's National Institute of Seismology, had said there would be "no imminent eruption over the next few days".
The toxic flow from Sunday's eruption rushed through areas it had never reached before, surprising and trapping entire neighborhoods, and cutting off access and fresh water to others. The death toll has risen from 69.
A baby miraculously survived after a house was covered in ash.
"In a matter of three or four minutes the village disappeared", Castillo said, smothered in what he described as a "sea" of muck that came crashing into homes, inundating people, pets and wildlife.
Authorities cautiously resumed search and rescue operations Wednesday in towns and villages devastated by the eruption of Guatemala's Volcano of Fire, with time quickly running out to find any survivors.
"It is very hard for us to identify them because some of the dead lost their features or their fingerprints" from the red-hot flows, said Fanuel Garcia, director of the National Institute of Forensic Sciences.
Figures for the dead were tweeted by Guatemala's National Institute of Forensic Sciences. Some 46 people were injured, around half of whom are in serious condition, it said. "There's a lot of people suffering right now because they lost their family, they lost their home, they lost everything they had, and there is a lot of people missing".
The institute said there was a moderate flow of risky volcanic material down the volcano, and warned of the possibility of a strong flow in some areas.