The primary Roman gods of the sun were Sol (especially Sol Invictus in the later Empire) and Apollo, who was also the god of light, music, and prophecy. While Sol embodied the sun itself as a divine force, Apollo, originally a Greek import, became the most culturally prominent solar deity in Roman religion and art.
Sol: The Original Sun God
Sol was the native Roman sun god, though his worship was relatively minor in the early Republic. He was part of an old agricultural and celestial triad with Luna (the Moon) and Aurora (the Dawn). Sol had a temple near the Circus Maximus, and his festivals, the Sol Indiges and Augustalia, were tied to the agricultural year.
Unlike the elaborate myths of Apollo, Sol had little mythology in early Rome. He was more of an abstract personification of the sun’s daily journey across the sky. His chariot, drawn by four horses, was a standard image borrowed from Greek Helios, with whom he was often identified.
Sol Invictus: The Unconquered Sun
The most famous solar deity of the late Roman Empire was Sol Invictus, meaning “Unconquered Sun.” This cult was formalized by the emperor Aurelian in 274 AD, who built a grand temple to him in Rome and established games held every four years. The worship of Sol Invictus was state-sponsored and became a unifying imperial cult.
Sol Invictus was depicted as a youthful, radiate-crowned god (with sun rays emanating from his head) driving a four-horse chariot. His birthday was celebrated on December 25, the date of the winter solstice in the Julian calendar, when the sun’s light begins to return. This date was later adopted for Christmas, though the exact relationship remains debated among historians.
Apollo: The Sun God from Greece
Apollo was introduced to Rome from Greece, likely through the Etruscans, and was officially adopted during a plague in 433 BC, when a temple was built to him. As a god of healing, he was invoked to stop the disease. Over time, his role as a sun god grew, largely because he was conflated with Helios.
In Roman literature and art, Apollo is often shown with a lyre, laurel wreath, and bow. He was the patron of music, poetry, and prophecy—his oracle at Delphi was one of the most important in the ancient world. The emperor Augustus claimed Apollo as his patron deity, building a temple on the Palatine Hill and associating himself with the god’s image of order and light.
Other Solar Deities and Conflations
Roman religion was syncretic, and several other deities were connected with the sun:
- Helios: The Greek sun god, often identified with Sol and Apollo. In Roman art, Helios and Sol are visually indistinguishable.
- Mithras: A Persian god whose mystery cult became popular in the Roman army. Mithras was often depicted as a sun god, and his followers believed he was the mediator between the sun and humanity.
- Jupiter: As the supreme sky god, Jupiter was sometimes given solar attributes, especially in the later Empire, when he was called Jupiter Sol Invictus.
- Serapis: A Greco-Egyptian god who was sometimes identified with Helios, particularly in the eastern provinces.
How the Romans Worshipped the Sun
Sun worship in Rome was not as elaborate as that of the state gods like Jupiter or Mars, but it had several distinct practices:
- Temples: The most important were the Temple of Sol in the Circus Maximus and the Temple of Sol Invictus built by Aurelian.
- Festivals: The Sol Indiges was celebrated on August 9, and the Dies Natalis Solis Invicti (Birthday of the Unconquered Sun) on December 25.
- Daily Rituals: Ordinary Romans might greet the sun at dawn with a prayer or salute, a practice noted by the philosopher Seneca.
- Imperial Connection: Emperors often associated themselves with the sun god to legitimize their rule. Nero had a colossal statue of himself with a solar crown, and later emperors like Elagabalus and Aurelian promoted sun worship as a central imperial cult.
Common Misconceptions
One common misconception is that the Romans only had one sun god. In reality, they had several, each with different roles and histories. Another is that Sol Invictus was a new invention; in fact, the cult had roots in earlier Syrian and Persian sun worship, and Aurelian merely formalized it. Also, the idea that Christmas was “originally” a pagan festival for Sol Invictus is an oversimplification—the date had multiple associations, and the Christian adoption was a complex process.
Frequently Asked Questions
Who was the main Roman sun god?
There was no single “main” sun god. Sol was the native deity, Apollo was the most culturally significant, and Sol Invictus became the official imperial sun god in the late Empire.
Did the Romans worship the sun every day?
Not as a formal daily ritual, but many Romans would offer a brief prayer or gesture to the sun at dawn. The state calendar included specific festival days for solar deities.
Is Sol Invictus the same as Apollo?
No. Sol Invictus was a distinct deity, though both were sun gods. Apollo was a multifaceted god with many domains, while Sol Invictus was specifically the unconquered sun, a more abstract and imperial concept.
Why was Sol Invictus popular among Roman soldiers?
Mithras, a sun god popular in the military, was often conflated with Sol Invictus. Soldiers valued the idea of an invincible sun that triumphed over darkness, which paralleled their own ideals of victory and loyalty.
Did the Romans have a sun god before Apollo?
Yes, Sol was worshipped in early Rome, though his cult was small. Apollo was introduced later, in the 5th century BC, and gradually absorbed many solar attributes.
What happened to Roman sun worship after Christianity?
Christianity absorbed some solar symbolism—Christ was called the “Sun of Righteousness”—but the pagan cults were suppressed by the late 4th century. The last official festival of Sol Invictus was likely celebrated in the 380s AD.
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