Hevelius est un cratère de 106 Km et profond de 2000 m qui se trouve au bord occidental de l’Océan des Tempêtes (Oceanus Procellarum). Le cratère Cavalerius (58 Km, 3000 m) est posé sur le mur nordique provoquant la présence de crêtes dans section Nord du plancher d’Hevelius. Directement sur le Versant Sud d’Hevelius on trouve le cratère Lohrmann (31 Km). La muraille d’Hevelius est très érodée, avec une échancrure à l’Est. Le mur occidental est recouvert par plusieurs petits impacts. Le plancher plat du cratère a été inondé par la lave, et comporte un système de petites fissures, entrecroisées sous forme de X, appelées Rimae Hevelius, ainsi qu’une petite montagne centrale excentrée vers le nord et haute de 1 km.

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Hevelius is a low-rimmed lunar crater that lies at the western edge of the Oceanus Procellarum lunar mare. The smaller but prominent crater Cavalerius is joined to the northern rim by low ridges. Due south of Hevelius is Lohrmann crater and the dark-hued Grimaldi basin.

Only a low, eroded rim of Hevelius rises above the surface. The western wall is overlain by several small impacts. The flat floor of the crater has been flooded by lava, and is now cross-crossed by a system of small clefts named the Rimae Hevelius. There is a low, 1 km-high central peak offset to the northwest of the mid-point. The northeastern part of the interior is more irregular and contains a straight ridge running toward the southeast. Along the northwest floor, near the inner wall, is a small crater.

This feature is sometimes referred to as Hevel, a name that was used to refer to Johannes Hevelius.