The NBA championship series, known as the NBA Finals, is typically held every year in June. For the 2025–26 NBA season, the league’s official key dates list the NBA Finals as starting in early June and running through late June if the series goes a full seven games.

In practical terms, that means:

  • The NBA championship usually begins in the first week of June.
  • The decisive “championship game” (Game 7, if needed) usually falls in the third week of June.

Because exact dates can shift slightly from year to year, the most accurate way to know “when is the NBA championship” for a specific season is to check that season’s key dates page on the NBA’s official site as the playoffs approach.