Thematic analysis
The film has been interpreted in many ways by different groups. Rubin has said that he did not set out to write the film as a spiritual allegory. He simply wanted to tell a story about human life and periods when a person becomes trapped in a cycle that they cannot escape. He said it was not "just about a man repeating the same day but a story about how to live. Whose life isn't a series of days? Who doesn't feel stuck from time to time?" In the bowling alley scene, Phil asks two Punxsutawney residents if they understand what it is like to be stuck in a place where nothing they do matters. He is referring to his own situation, but the two men, trapped in their own small-town lives, know exactly what he means.
While Rubin and Ramis discussed several of the philosophical and spiritual aspects of the film, they "never intended [it] to be anything more than a good, heartfelt, entertaining story." Murray saw the original script as an interpretation of how people repeat the same day over and over because they are afraid of change. Rubin added that at the start of the loop, it is the worst day of Phil's life. By being forced to change who he is, to embrace the world around him, and each moment of his day, it becomes the best day of his life; the day he falls in love. In a 2017 interview, Murray said he believed Groundhog Day still resonated because it is about "the idea that we just have to try again... it's such a beautiful, powerful idea."
Rubin has been contacted throughout the years by different experts providing their own interpretations. It has been seen as a Christian allegory with Punxsutawney Phil representing Jesus Christ, an example of the Nietzschean concept of eternal return, the spirit of Judaism, and the essence of homeopathy. It has also been interpreted as an adaptation of the Greek mythological figure Sisyphus who is also condemned to an eternal, daily punishment. Others have found significance in the numbers present in the film. Ramis himself was fascinated by Rubin's original draft and its concepts of reincarnation. The date of Groundhog Day also has implications. It is set between the end of winter—characterized in the film as a period of satire and the end of things—and spring—a season represented by comedy and connected with themes of renewal and redemption.
Buddhist leaders commended the representation of the ideologies of regeneration. Phil can be interpreted as a bodhisattva, someone who has reached the brink of Nirvana and returns to Earth to help others to do the same. His loops can represent saṃsāra, a cycle of suffering from which he must escape. In the Jewish faith, Phil's escape or reward can be seen as him being returned to Earth to perform moral deeds or mitzvot—the precepts and commandments of God. In Christianity, his journey can be interpreted as a form of resurrection or a means of securing a place in heaven. In Falun Gong religious philosophy, the film has been interpreted as a message that the spiritual self cannot evolve until it learns from past mistakes. In Catholicism, Phil's situation can be identified as a form of purgatory, escaped only by embracing selflessness. MacDowell said "Wouldn't it be great if we had that kind of experience and learn something from it? We go through life and are not always conscious of it... whatever religion you want to base yourself in, that's ultimately why we're here." Groundhog Day can also be interpreted as a secular tale in which Phil is experiencing an existential crisis where primal self-indulgence is no longer satisfying, causing him to fall into a depression that he escapes by taking ownership of his own self-improvement; he then uses his improved persona to benevolently help others.
Phil initially compares himself to a god, declaring that as a weatherman, he makes the weather. After several loops, he comes to believe he is a god, asserting that omnipotence may be mistaken for having lived so long one simply knows everything. Using his knowledge he is able to manipulate events in his favor. The repetition gives Phil an opportunity to escape from his own narcissistic self-confinement. Unwilling to change himself, the means to do so are forced upon him. After constant rejection by Rita and his idea of love, Phil hits an emotional low and repeatedly commits suicide. At one point, he suggests that he has killed himself enough times to no longer exist. It is at this point, Ramis suggests, that Phil becomes ready to change.
It is only when Phil stops using the loops to indulge his own desires and instead uses them to selflessly help others that he is freed. In repeatedly failing to save the old homeless man, Phil is also forced to accept that he is not a god. Similarly, regardless of how much knowledge he gains about Rita, and despite his accomplishments learned throughout the loops, he is unable to impress her enough to earn her love. He wins her over only once he stops trying to do so, and instead demonstrates genuine care for others without fakery or self-interest, will likely reset, and it will have all been for naught. Only then does Rita return his affections. The aspects of Rita that Phil mocked at the start of the film have become qualities he admires and respects, and in turn, Phil receives Rita's love not because he desires it, but because he has genuinely become the type of person that Rita could love. This demonstrates the redeeming power of love, something Ramis wanted to emphasize. For him, Groundhog Day represents having the strength and knowledge to make a change when faced with the opportunity to repeat previous mistakes.
Rick Brookhiser argues that it is because Phil fully appreciates every facet of the day that he is rewarded by the day being taken from him. He said, "loving life includes loving the fact that it goes." John Seamon said that where other films use memory as a means of reflection or escape, Phil effectively lives within his memories, repeating them indefinitely; he has no hope for a future because everything will reset. By remembering and appreciating new details, Phil is able to grow as a person and becomes the agent of his own change. Rubin said Phil will not return to his old ways after his experiences, but might suffer disappointment that no day will ever live up to his final, perfect February 2, after which he essentially loses his superpowers.