Weather-based grades are not available for these dates. Lunar indicators describe moon phase and feeding-period timing.
Choose a location to get local times and weather-based grades where available. Select a date for its timing details.
Planning for September
September is when the year turns back in the angler's favor. Cooling water pulls fish out of their summer depths, baitfish begin their autumn movement, and feeding windows widen back through the middle of the day. It is one of the most consistent months on the calendar, particularly in the north where the change arrives first.
Fall tactics and species
Fall triggers aggressive feeding as fish prepare for winter. Follow baitfish migrations and target transition zones. Cooling water pushes fish shallow again. Some of the best fishing of the year.
Lunar indicators describe moon phase and feeding-period timing, not fishing conditions. Weather and water temperature are not included. National timing uses a Central US reference.
Get the full A+ to F grade for your water at bestdaystofish.com
Moon Phase Calendar
🌑New Moon
September 29
Top moon-phase score in our rating
🌕Full Moon
September 15
Top moon-phase score in our rating
Major & Minor Feeding Periods
Major Periods (about 2 hours)
Centered on the moon passing overhead or underfoot. Solunar theory treats these as the strongest feeding windows of the day; our full forecast uses them to shape the best hours.
Minor Periods (about 1 hour)
Centered on moonrise and moonset. Solunar theory's secondary feeding windows.
Best Fishing Days in September 2027
The strongest lunar dates in September 2027 are September 29, September 15, September 30, September 16, September 14, ranked by solunar activity, moon phase, and the strength of each day's major and minor feeding periods. Those are the factors a national calendar can actually know. Water temperature moves a fishing grade far more than the moon does, and it depends entirely on where you fish, so enter your location for a full grade that adds water temperature, weather, and barometric pressure.
September is when the year turns back in the angler's favor. Cooling water pulls fish out of their summer depths, baitfish begin their autumn movement, and feeding windows widen back through the middle of the day. It is one of the most consistent months on the calendar, particularly in the north where the change arrives first.
Want it on the boat or the fridge? This page doubles as a free printable fishing calendar for September 2027. Use the Print or Save as PDF button at the top and your browser produces a clean one-page PDF of the whole month, grades and moon phases included.
Chinook Salmon, Snook spawn during September. Fish on beds are harder to tempt, so a forecast for one of these species lowers the grade while the water says the fish are spawning. Target pre-spawn and post-spawn species instead, or fish deeper staging areas nearby. Some species appear in both lists because spawning runs across the month, with northern waters lagging southern ones by several weeks.
Red Snapper, Snook, Wahoo are recovering from the spawn in September. Expect a short lull before they return to normal feeding, and favor slower presentations near spawning flats.