Leading up to the U.S. presidential election, Hawking was cheekily asked on "Good Morning Britain" whether he could explain Trump's rise to presidential candidacy.
"I can't," Hawking said last May. "He's a demagogue who seems to appeal to the lowest common denominator."
Asked now about that statement, Hawking elaborated on Trump's victory and his first two months in office.
"Trump was elected by people who felt disenfranchised by the governing elite in a revolt against globalization," Hawking said Monday. "His priority will be to satisfy his electorate, who are neither liberal nor that well-informed. We have already seen this in the promise to build a wall along the Mexican border and the sanctioning of two oil pipelines and the appointment to the Environmental Protection Agency of Scott Pruitt, a man who does not believe carbon dioxide causes climate change."
Indeed, Hawking was especially critical of Pruitt's appointment.
When the British journalist Piers Morgan then asked what he most wanted to say to Trump, Hawking said he would tell the president that Pruitt should be replaced as the EPA chief, adding that "climate change is one of the great dangers we face, and it's one we can prevent."
Hawking also expressed concerns about Trump's travel ban, calling it "inefficient" and explaining how it should be done.
"His travel ban brands as Islamic State terrorists all citizens of six mainly Muslim countries, but not including America's allies such as Iraq, Saudi Arabia and Qatar, which allegedly help finance Islamic State," he said. "This blanket ban is inefficient and prevents America recruiting skilled people from these countries. To be effective, it should be replaced by a more selective, intelligence-based approach.
"But again, I fear this may not happen, as Trump continues to appease his electorate."
During the 11-minute interview, Hawking was asked for his opinion on a wide range of topics, including the true meaning of life, gender equality and artificial intelligence, a topic about which he has expressed grave concerns.
"Ever since the start of the industrial revolution, there have been fears of mass unemployment, as machines replaced humans," he said Monday. "Instead, a demand for goods and services has risen in line with the increased capabilities. Whether this can continue indefinitely is an open question, but there is a greater danger from artificial intelligence if we allow it to become self-designing, for then it can improve itself rapidly, and we may lose control."
Hawking called himself a feminist, saying: "I have always supported women's rights."
Morgan brought up Britain's most powerful people - many of whom are women, including Queen Elizabeth, Prime Minister Theresa May, politicians Nicola Sturgeon and Amber Rudd, and Cressida Dick, commissioner of the Metropolitan Police Service.
Morgan asked Hawking whether this was scientific evidence of gender equality.