Sacramento-Delta shifts into fall mode under a full moon

What's next

Expect this transition to keep building over the next few days. As surface temperatures continue easing off late-summer highs, fish activity should concentrate more tightly into early morning and evening low-light windows rather than spreading evenly through the day.

The full moon overhead can push feeding periods toward first and last light, and moonlit overnight windows are worth planning around for anglers fishing after dark. Heading into the weekend, look for the pattern to hold steady rather than shift abruptly. Early fall in the Delta is typically a gradual transition, not a sudden turnover.

Context

Late September sits early in the Sacramento-Delta's fall transition. Regionally, this stretch of the calendar typically marks the start of a shift from summer patterns toward the cooler-water fall bite that builds through October and November, as fish reposition ahead of winter. That puts conditions on schedule for the season, neither early nor late relative to a typical year, with the more pronounced fall push still generally a few weeks out.