Today, a person can entertain themselves for an hour just by watching Ronald Reagan tell jokes on YouTube. Reagan was very effective as a speaker. He used humor to make sure that the U.S.S.R. understood that the Americans were not afraid of communism. He had high approval ratings and he accomplished his agenda.
Most people are afraid of speaking in public, but effective oral communication is a key skill and is clearly evident because of his wide variations of careers. Reagan has been recognized for this particular skill and he did use it in his political pursuits.
Some would not be able to distinguish him apart from politics but the question, as put forth, is not about politics.
President Reagan was a good speaker--he was also known as the great communicator. Reagan had a gift for speaking. He was a natural in front of the camera and in front of audiences. Some of Reagan's speeches have become famous moments in history. His speech at the Berlin Wall will live the test of time.
We have had Presidents who were good speakers and those who were not. Ronald Reagan was not the greatest speaker of our time. That does not mean he wasn't a good President. He had a tendency to pause or stumble a bit in his speeches. Also, from time to time he seemed to lose his place during a speech.