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Reservoir Grafham Water (Cambridgeshire) — a spot well known among anglers. About 6.1 km² in area. A smart bite calendar — moon phase, atmospheric pressure, and weather combined into an hourly fish-activity forecast for the coming days.
The shoreline is moderately indented: bays and points alternate with even stretches. The largest water around: all 18 neighbours are smaller.
The wind builds its wave along the north-west — south-east axis — 3 mi of open water; along north-east — south-west there is only 2 mi. When it runs down the main axis, the calm water sits against the bank it blows from, while the wave and the silt go to the far one — and the fish follow them there to feed.
Tuesday, November 3
Green check: this species was recorded here by GBIF. Species without a check may still occur in the waterbody.
Chum one spot near a drop-off and wait for fish to arrive — don't chase them.
Grafham Water — Tuesday, November 3
The bite is weak — fish are sluggish. Weather is steady, with no sharp swings — fish behave predictably. Peak 10:00–15:00.
The computed water temperature is around 11 °C — colder than the 14–26 °C comfort range for Bleak: the fish conserves energy and takes more cautiously.
Bleak feeds by day — between sunrise and sunset; their times are in the sun-and-moon card above.
Pressure is dropping 2 hPa over the day — fish are usually more active ahead of a weather change.
One more input — the moon's feeding windows: within their hours the score sits higher than across the rest of the day. The window times are in the “Solunar feeding periods” card below.
November is a slow season for Bleak: the best months fall at another time of year.
These are the same values the bite curve above was computed from. How the forecast works
Cloudy · feels like +8°
The day is 4 min shorter than yesterday.
Sunshine hours count direct sun only — cloud cover cuts it, so it is shorter than daylight.
Geomagnetic fieldquiet, Kp 2
Kp index — NOAA data. Not part of the bite score: catches show no link between geomagnetic storms and the bite.
The windows are set by the moon's transit and rise, and the forecast above already accounts for them: within these hours the bite score sits higher than across the rest of the day, while the day's overall level still comes from the catch-calibrated model.
What are solunar periods?Cambridgeshire: the months when each species peaks and when it goes quiet. The current month is outlined. The bottom row counts the catches logged on this water in each month.
| Fish | January | February | March | April | May | June | July | August | September | October | November | December |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Perch | active | active | fair | fair | active | active | active | active | active | peak | peak | active |
| Dace | slow | fair | active | peak | active | active | active | peak | peak | active | fair | slow |
| European eel | slow | fair | active | active | active | active | active | peak | peak | active | fair | slow |
| Roach | active | peak | peak | peak | active | fair | fair | fair | fair | active | active | active |
| Ruffe | slow | fair | active | peak | active | active | active | peak | peak | active | fair | fair |
| Whitefish | slow | fair | active | peak | peak | active | active | peak | peak | active | fair | slow |
| Bream | slow | fair | active | peak | peak | peak | peak | active | active | fair | slow | slow |
| Pike | fair | fair | fair | fair | active | active | active | peak | peak | peak | active | fair |
| Rainbow trout | slow | fair | active | peak | peak | active | active | active | active | slow | slow | slow |
| Zander | fair | fair | fair | fair | active | active | peak | peak | peak | peak | active | fair |
| Brown trout | slow | slow | active | peak | peak | peak | active | active | fair | slow | slow | slow |
| White bream | fair | active | active | peak | active | peak | active | fair | slow | slow | fair | fair |
| Ide | slow | slow | fair | peak | peak | active | active | active | fair | slow | slow | slow |
| Bleak | slow | fair | peak | peak | active | active | fair | fair | slow | slow | slow | slow |
| Carp | slow | slow | slow | fair | active | peak | peak | active | fair | slow | slow | slow |
| Chub | slow | slow | fair | active | peak | active | active | fair | slow | slow | slow | slow |
| Crucian carp | slow | slow | fair | peak | peak | active | active | fair | slow | slow | slow | slow |
| Rudd | slow | slow | fair | peak | peak | active | active | fair | slow | slow | slow | slow |
| Tench | slow | slow | slow | peak | peak | active | active | fair | slow | slow | slow | slow |
| Wels catfish | slow | slow | slow | fair | peak | peak | peak | active | fair | slow | slow | slow |
| Catches here | 1 | 0 | 0 | 2 | 0 | 2 | 1 | 0 | 0 | 1 | 0 | 1 |
BiteGuideFrom anglers’ reports
This is a summary of anglers' reports, not a proven cause of the bite: conditions lining up does not mean they drove it.
vertical axis — number of catches
| Value | Catches | Share |
|---|---|---|
| Rainbow trout | 5 | 63% |
| Brown trout | 2 | 25% |
| Carp | 1 | 13% |
Green check: this species was recorded here by GBIF. Species without a check may still occur in the waterbody.
Blue check: this species appears as a catch in reports for this waterbody.
Chum one spot near a drop-off and wait for fish to arrive — don't chase them.
Grafham Water — Tuesday, November 3
The bite is weak — fish are sluggish. Weather is steady, with no sharp swings — fish behave predictably. Peak 10:00–15:00.
Other nearby places to fish
Other nearby waters
Biting
Fish in 8 of 8 reports · Mostly Rainbow trout
Anglers have logged 8 fishing reports here. Most commonly caught: Rainbow trout, Brown trout, Carp. Peak season: year-round.