Library

The Why — when to fish

The reasoning behind the best window on each water — why the fishing turns on heat, oxygen, light, the moon and the season. Every call is graded for how sure we are, with the sources to check.

Solid settled scienceMixed evidence pulls both waysFolkloretradition we can't yet back

The shape of a fishing day

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Illustrative — the shape of a warm day, not a live forecast.

Low light at dawn and the evening cool-down carry most of the sport; the hot middle of a summer day is best left alone. The cards below explain why.

Temperature & oxygen

Water temperature & thermal stressWhy heat shuts the fishing downSolidDissolved oxygen & the dawn lowThe catch in 'fish at first light'MixedCold water & the winter slow-downWhy winter is a midday gameSolid

Light & daily rhythm

Light & the crepuscular windowWhy dawn and duskSolid

Weather

Wind & the rippleWhy a good wave helpsMixedBarometric pressure & frontsWhy the barometer is a red herringFolklore

The moon

The moon & solunar theoryWe show it, we don't trust itFolklore

The season

The season & the hatch yearWhy the calendar sets the tableSolid