Wonder Woman's body is a mystical creation made from the clay surrounding Themyscira. Through divine means, her disembodied soul was nurtured in and retrieved from the Cavern of Souls. Once the soul was placed into the body it immediately came to life, and was blessed with metahuman abilities by six Olympian deities.
Demeter, the Goddess of agriculture and fertility, blessed Diana with strength drawn from the Earth spirit Gaea, making her one of the physically strongest heroes in the DC Universe . She has been observed assisting in preventing large chunks of the Moon from crashing onto the Earth, supporting the weight of bridges,, hefting entire railroad trains and she has even managed to physically overpower Supergirl.
While not invulnerable, she is quite durable , capable of shrugging off high powered rifle fire with some pain but no injury, and even capable of surviving a warp core explosion. She is even durable enough to survive the depths of space for a period of time before running out of breath. As noted, while her superhuman stamina affords her great resistance to blunt force trauma, her skin can be cut by weapons if they are sharp enough.
Aphrodite, the Goddess of love and beauty, blessed Diana with great beauty and a loving heart.
Pallas Athena, the Goddess of wisdom and war, granted Diana great wisdom, intelligence and military prowess. It is Athena’s gift that has enabled Diana to master over a dozen languages (including those of alien origin), multiple complex crafts, sciences and philosophies, as well as her amazon legacy of over 3000 years of leadership, military strategy, and armed and unarmed combat. More recently Athena bound her own eyesight to Diana's, granting her increased empathy.
Artemis, Goddess of the hunt, animals and the Moon, graced Diana with the Eyes of the Hunter and Unity with Beasts. The Eye of the Hunter ability gives Diana a full range of enhanced senses. Unity with Beasts grants her the ability to communicate with all forms of animal life, as well as to calm even the most ferocious of beasts.
Hestia, Goddess of Hearth and Home, granted Diana "sisterhood with fire, that it might open men's hearts to her." This power has been shown to control the "Fires of Truth," which Diana wields through her lasso, making anyone bound by it unable to lie. This ability also grants her some resistance to both normal and supernatural fire.
Hermes, the messenger God of speed, granted Diana superhuman speed, and the ability to fly. Through the an act of concentration, Diana can mystically defy the laws of gravity and propel herself through the air to achieve flight. She is capable of flying at speeds approaching half the speed of light. She is swift enough to deflect bullets, lasers and other projectiles with her virtually impenetrable bracelets.