A good weather indicator for fishing I use is the Satellite and radar pages on environment canada weather site. Also intellicast for these pics.
You can get a pretty good idea of the major fronts moving in as well as whats in store for the day.
Another page thats useful is sunrise/set and moonrise/set for your area. It will give you key hrs to be on the water - good for planning in advance, you can pull up those facts well ahead of your trip.
I have found in general, full moon and new moon days, ( 2 or 3 days around it) usually have a bigger number of active and cruising fish in the water body. Fish tend to be feeding a little more than usual. As long as weather does'nt affect them. The weather patterns of the day seem to outway moon activity, but it can still mean the only bite hr(s) on a slow day.
"Wind from the East fish bite the least" I think comes from abnormal weather. Normal winds are predominantly from the west and fish definately like stable (normal) weather. The longer the weather has been the same (fairly steady temperature, smae type of day for 2 or 3 or more - sunny,overcast, drizzly etc.) the better the fishing gets.
If its been sunny and 25 degrees every day for a week get out there and hit the water - fishing will be awesome. Same if its rained every day for a week.
When the weather flip flops a lot it usually slows down the bite.
When a front is moving in though, the few hours before its arrival usually really turn on the fish. Carry a barometer in your boat or tackle box. If it starts to really move while your fishing, you can bet the bite will be hot until the front arrives. Watch for storms though when this happens, sometimes it means the fish are really gone a bite, but you gotta run for cover.
GL MIKE
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