Diablo IV Season 15: Season of Hell's Legacy is estimated to end around December 2, 2026, based on its 78-day season cadence (verified September 16, 2026). Season 15: Season of Hell's Legacy went live on September 15, 2026 at 17:00 UTC, opening Diablo's 30th-anniversary season. For the first time all three Prime Evils — Diablo, Mephisto and Baal — appear together in one season, alongside the return of Deckard Cain and a living-history questline that recreates moments from past Diablo games.
When Does Diablo 4 Season 15 End?
Diablo 4 Season 15: Season of Hell's Legacy is live now — it launched on September 15, 2026 at 17:00 UTC. Blizzard has not yet confirmed the Season 15 end date, so the countdown above tracks the current best estimate and updates the moment an official timestamp is announced.
Diablo IV seasons have averaged roughly 80 days across recent regular seasons, ranging from about 63 to 105 days. Applying that cadence to a September 15 start puts the expected wind-down for Season of Hell's Legacy in late November or early December 2026. Treat that as a planning window, not a hard deadline — Blizzard usually confirms the exact end date once the following season's PTR begins.
Diablo 4 Season End Date
Each Diablo 4 season ends when the next one launches, migrating your seasonal characters to the Eternal Realm and resetting the seasonal ladder. Season 15 began September 15, 2026; based on the typical seasonal window it is expected to run into late 2026 before the next season takes over.
The shortest recent Diablo 4 season was Season 12: Season of Slaughter at 48 days, while Season 6: Hatred Rising ran 105 days. Most modern seasons sit between 63 and 98 days, which is the range this page uses to estimate the Season of Hell's Legacy close until Blizzard confirms it.
When Does Season of Hell's Legacy End?
Season of Hell's Legacy is the theme for Diablo 4 Season 15, the game's 30th-anniversary season. With a September 15, 2026 start and the standard ~80-day cadence, its estimated end lands in late 2026. The end date is not yet officially confirmed, so use the live countdown above rather than a fixed calendar date.
Finish the Season Journey, complete the anniversary questline, and claim any Battle Pass rewards before the season closes — unclaimed seasonal Battle Pass tiers do not carry over once the next season begins.
Season 15: Hell's Legacy Overview
The headline of Season of Hell's Legacy is the return of all three Prime Evils — Diablo, Mephisto and Baal — together in a single season for the first time, alongside the fan-favourite return of Deckard Cain. A living-history questline recreates iconic moments from past Diablo games to mark the series' 30th anniversary.
A new Rebirth feature lets an existing hero start fresh in the Seasonal Realm without rerolling from scratch, while new Unique Charms and the Horadric Post expand buildcrafting. A Witcher crossover with CD Projekt Red is also on the way this season.
Gameplay Updates and Player Strategies
Use Rebirth to carry a favourite character into the Seasonal Realm and skip the early leveling grind, then chase the new Unique Charms and the Horadric Post upgrades to round out your build faster than in a normal fresh start.
Push the Season Journey ranks steadily to bank skill points, paragon, and crafting materials, and knock out evergreen XP and challenge objectives while the anniversary events are live to maximize Battle Pass tier progress before the season resets.