Simple Tides / Guides / Moon Phase & Fishing

Moon Phases and Fishing: What the Calendar Really Tells You

"Fish the full moon" is common advice, but the moon influences a fishing trip through two separate channels: tide range and solunar timing. Here's how they fit together.

The moon drives tide range

Near new and full moons, tide range is at its largest (a spring tide), meaning faster-moving water and often more pronounced feeding windows around tide changes. Near quarter moons, tide range is smaller (a neap tide), and water moves more gently. This is the most concrete, well-documented way the moon phase affects a trip.

The moon also drives solunar timing

Separately, solunar theory ties fish and wildlife activity to the moon's position overhead or underfoot (major periods) and to moonrise and moonset (minor periods), regardless of tide. New and full moons are traditionally considered the strongest solunar days, since the sun and moon's pull align most directly.

So does the moon phase actually matter?

The tide-range effect is on solid physical footing: bigger tides genuinely mean more water movement. The solunar effect has real anecdotal support among experienced anglers but weaker formal scientific backing, and results vary a lot by species and location. Treat moon phase as a useful planning input, layered with tide movement and weather, rather than the single deciding factor.

Using this practically

When possible, aim trips around new or full moon phases if your priority is bigger tide swings and stronger current-driven feeding, and check the specific major/minor solunar windows for your day if you want to fine-tune timing further. Simple Tides shows moon phase, illumination, and solunar activity together, and folds all of it into the Smart Bite Score.