That is probably because most places and tides vary quite a bit, but I have found the following to work well. In Cape Town we are lucky as we have two sides of ocean to dive on any particular day, one being cleaned by a NW wind and the other by a SE.
So the general rule I have here is this, for water to be clean and relatively flat you want winds to blow offshore, from land into the sea, for a few days. This cleans it out nicely but it also tends to make the water cold, causing fish to hole up or go deeper after warmer water, so your better wind needs to go down about a day or so before your dive for everything to settle and the water temps to rise a bit.
On moon phases a few days before and a few days after full moon often works better as tides are too big and water normally too rough on full moon and the day before and after.
Weather wise, its more fun to go out when the sun is shining but just because its raining it dont mean that there wont be any fish about, if you find water to be colder than normal look in holes and caves as the fish in the area will probably be holed up. After big weather when the sea has been churned up good, wait for it to clear and settle down as fish will be feeding on the loose bits from the rough water and make good targets while food is out there as they eat whenever they can...
Hope this helps a bit
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Dive safe and shoot straight
- Hénré -
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"Thinking is the hardest work there is, which is probably why so few engage in it"
- Henry Ford -
