East coast North Norfolk Slack
Blakeney to Scolt Head Island: paddling a harbour that empties completely twice a day
North Norfolk has the largest tidal range on the English east coast and a harbour that is dry sand for eight hours in every twelve. The reward is a mile-wide sheltered channel, a seal colony on Scolt Head, and a bird spectacle in winter that is hard to match anywhere else in England.
- Distance
- 7.4 nm
- Tide window
- 3.6-5.1 m springs, 1.8-2.8 m neaps
- Wind limit
- 12 kt
- Grade
- Sheltered
- Published
- 29 Aug 2026
The five-hour harbour
On a 5.1 m spring, Blakeney harbour holds navigable water for roughly five hours around high water. On a 1.8 m neap it is under four. Everything about this paddle follows from that: you launch at Morston on the last of the flood, you are back on the hard before the ebb has dropped below half, and in between you have a channel that wanders between sandbanks.
The channel from Morston to Scolt Head is marked with withies, wooden stakes pushed into the mud and re-cut each spring. They are the only reliable guide. Do not navigate this harbour by line of sight on a fixed landmark: the channel moves 50 to 100 m east or west in a single winter storm.
Scolt Head and its seals
Scolt Head Island is a 4 mile long shingle and dune spit, and its western end holds a common seal haul-out that numbers between 200 and 500 animals depending on the season. There is no landing on the western end between April and August, when the seals are pupped and moulting, and the National Trust wardens are on the island in summer.
The eastern end is a different matter: there is a small landing beach at the far tip which is open year round, and it gives you a view back down the whole harbour. Walk no more than 20 m above the tide line, because the upper beach is nesting habitat for ringed plover and oystercatcher from April.
Reading the wind over the sand
A force 4 anywhere else is a pleasant breeze here, so long as it is not from the northeast. The harbour is so shallow that an easterly over 15 knots raises a short, steep chop within twenty minutes, and in the narrow section between the Harbour and Blakeney Point that chop turns into a standing wave pattern you cannot avoid.
Keep the wind on your beam on the way out rather than on your bow. The outbound leg is the one where you have the tide helping you; the return is where you want the wind behind you. A northwesterly force 3 to 4 is close to ideal for this trip in either direction.
Winter, and the geese
From October to February around 30,000 dark-bellied brent geese feed on the eelgrass on the falling tide, and the harbour becomes one of the most important wildfowl sites in the country. Paddling past a grazing flock at 100 m is fine; paddling into it will put the whole flock up and cost them a feeding tide.
Winter paddling here needs a dry suit and a realistic view of your own cold-water capacity. Air temperature drops to 2 to 6 C and the water sits at 5 to 7 C. The upside is an empty harbour, no motor traffic and the best light of the year on the marshes.
Plan table
Before departure
- 01
Confirm high water at Blakeney, not at Cromer
Blakeney runs about 20 minutes after the standard port. The harbour is not navigable at low water.
- 02
Mark the withies on the chart before you go
The channel changes every winter; last season's GPS track may be over a sandbank now.
- 03
Check the National Trust landing rules for Scolt Head
The western end is closed April to August for pupping.
- 04
Take a drying-out plan for the group
There is nowhere to land and wait in comfort between Morston and the island.
En route
- 01
Follow the withies, not the mud-and-landmarks line
The stakes mark the deepest water at half tide; the banks either side of them change overnight.
- 02
Hold 100 m off any grazing flock and 200 m off the seal haul-out
Getting closer costs the birds a feeding tide and is a disturbance offence.
- 03
Watch for the Blakeney channel on the return
The ebb sets west across the harbour mouth and will push you off the Morston line.
- 04
Be back on the hard by half ebb
After that, the last 300 m to the quay is a mud walk with a loaded boat.
Key numbers
- 7.4 nm return Morston to Scolt Head, 3 to 4 hours within one high water.
- Tidal range up to 5.1 m on springs; the harbour is dry for seven hours in twelve.
- Wind limit 12 kt, and 15 kt is hard work in the narrow section.
- Follow the withies; the channel relocates most winters.
- The western end of Scolt Head is closed to landing April to August.
Bail-outs
- B1 Blakeney quay, reachable on any tide above half flood
- B2 Wells-next-the-Sea, 8 nm east, a deepwater harbour with a lifeboat
Return leg：Come back on the last of the flood rather than the first of the ebb. The ebb drains the harbour over the sand and leaves you walking the boat for the final half mile.