“South-wester at 15 knots.”
That tells you almost nothing about whether to go fishing. It’s the number every weather app leads with, and on its own it’s close to useless to a shore angler.
The same wind, the same speed, the same hour: a gift at one mark and unfishable at the one around the headland. What changed wasn’t the wind. It was which way the beach was pointing.
The number you actually want
What matters is the angle between the wind and your shoreline. Whether it’s blowing onto the beach or off it, and by how much.
That single conversion turns a meteorological fact into a fishing fact:
Onshore pushes water, stirs the shallows, moves sand and food, and dirties the water. It builds surf and puts a churn in the gullies. Often it turns the fish on. It also makes casting miserable and the sea dangerous.
Offshore flattens the surface, cleans the water, and makes casting easy. Sometimes that’s exactly right. Sometimes it’s the reason nothing happened all morning.
Neither is universally good. That’s the point — it depends on your mark, your species, and the season. Which is precisely the kind of question your own record can answer and a general forecast can’t.
Why BitePattern asks which way your beach faces
When you save a mark, the app asks once for its shoreline direction — the compass bearing the beach or ledge faces. You can point your phone at the sea and capture it, or tap one of eight compass buttons.
From then on, every wind reading at that mark is stored as degrees off dead onshore. Zero is straight in your face. A hundred and eighty is straight off your back.
That’s the number the matching engine uses. Not the raw direction. The raw direction is only meaningful once you know where you’re standing.
What happens if you skip it
The app does not guess.
If a mark has no shoreline bearing, wind is simply not rated at that mark — and it says so rather than quietly pretending. You’ll get an answer built on tide, barometer, swell, light, moon and season, with wind absent and flagged.
That’s deliberate, and it’s worth explaining why, because “just estimate it from the GPS position” is an obvious-sounding idea.
A guessed bearing doesn’t produce a slightly-wrong wind number. It produces a confidently wrong one, permanently, on every trip you ever log at that mark, and on every conclusion drawn from them. If the guess is ninety degrees out, the app will cheerfully tell you that you catch well in an offshore breeze when in fact you’ve never fished one there.
Wrong data that looks right is worse than missing data that admits it. So we leave it blank and tell you.
Setting it takes about five seconds and fixes it forever. Edit the bearing later and the app re-reads the conditions for every trip at that mark automatically — nothing is frozen at the moment you logged it.
The bit that surprises people
Most anglers have a rough sense of this already. What they usually don’t have is the ability to check it.
You might be certain you fish better with a light onshore. Your record may agree. It may also show that your best sessions were actually in a cross-shore at forty-odd degrees, and that the dead-onshore mornings you remember fondly were three good trips out of eleven.
Memory is generous about the days that worked. Forty logged trips are not.
That’s not the app being clever. It’s arithmetic you can’t do in your head across a season, done on your own data.
In practice
- Set the shoreline direction when you save a mark. Five seconds, once.
- If you skipped it, go back and add it. Everything recalculates.
- Don’t guess a bearing you’re unsure of. Leave it empty and let the app tell you wind is unrated there.
- Then log trips — including the blanks — and let the wind answer come from your own water rather than from general advice.
Wind speed is the number everyone quotes. Wind angle relative to your beach is the number that decides your morning.