Today’s high tides for Cley Next the Sea are 08:26 and 21:00. Low waters are 02:31 and 15:03. Times are shown in BST.
Updated 29 August 2026 at 14:15
Today’s highs and lows
High water08:26 · 5.75 m · 21:00 · 5.53 m
Low water02:31 · 0.14 m · 15:03 · -0.27 m
A spring tide — more range, stronger flood and ebb.
Cley Next the Sea · Tide Times
🌧️
Good tide and wind later — though it'll probably rain
Next high water
21:00
5.53 m
Sailing window
19:00 – 20:24
Sunset 19:48 · Twilight 20:24
ⓘ
Sunset is when the sun dips below the horizon. Twilight is a little later — when the sun is 6° below the horizon and usable light for navigating the harbour effectively stops. When the tide is still in after sunset, the sailing window runs until twilight.
It’s a spring tide (HW 5.53 m) — stronger flood and ebb than on a neap. Forecasts suggest light rain possible during the high tide.
Forecast conditions
High Water
21:00
5.53 m
South-westerly
5 kn
Gusts 11 kn
Waves
0.4 m · Slight
Wind · Met Office · 14:15
·
For a harbour or village site. The board stays current — with a quiet link to the app.
Every high and low water at Cley Next the Sea for the next 14 days. Cley follows Blakeney Quay — about 15 minutes after the harbour clock. Heights on Chart Datum at Blakeney Bar. Planning only.
14-day tide times for Cley Next the Sea
Date
Tide
Time
Height
Sat 29 Aug
Low
02:31
0.14 m
Sat 29 Aug
High
08:26
5.75 m
Sat 29 Aug
Low
15:03
-0.27 m
Sat 29 Aug
High
21:00
5.53 m
Sun 30 Aug
Low
03:06
0.00 m
Sun 30 Aug
High
09:01
5.91 m
Sun 30 Aug
Low
15:35
-0.38 m
Sun 30 Aug
High
21:32
5.58 m
Mon 31 Aug
Low
03:39
-0.06 m
Mon 31 Aug
High
09:37
6.00 m
Mon 31 Aug
Low
16:06
-0.40 m
Mon 31 Aug
High
22:05
5.57 m
Tue 1 Sept
Low
04:11
-0.04 m
Tue 1 Sept
High
10:13
5.98 m
Tue 1 Sept
Low
16:39
-0.31 m
Tue 1 Sept
High
22:39
5.46 m
Wed 2 Sept
Low
04:45
0.09 m
Wed 2 Sept
High
10:53
5.82 m
Wed 2 Sept
Low
17:13
-0.08 m
Wed 2 Sept
High
23:15
5.26 m
Thu 3 Sept
Low
05:22
0.33 m
Thu 3 Sept
High
11:37
5.50 m
Thu 3 Sept
Low
17:53
0.31 m
Thu 3 Sept
High
23:58
4.94 m
Fri 4 Sept
Low
06:07
0.68 m
Fri 4 Sept
High
12:29
5.05 m
Fri 4 Sept
Low
18:46
0.81 m
Sat 5 Sept
High
00:51
4.58 m
Sat 5 Sept
Low
07:12
1.06 m
Sat 5 Sept
High
13:38
4.59 m
Sat 5 Sept
Low
20:03
1.28 m
Sun 6 Sept
High
02:11
4.30 m
Sun 6 Sept
Low
08:48
1.25 m
Sun 6 Sept
High
15:19
4.37 m
Sun 6 Sept
Low
21:40
1.44 m
Mon 7 Sept
High
03:57
4.31 m
Mon 7 Sept
Low
10:27
1.02 m
Mon 7 Sept
High
16:49
4.58 m
Mon 7 Sept
Low
23:05
1.23 m
Tue 8 Sept
High
05:10
4.68 m
Tue 8 Sept
Low
11:44
0.49 m
Tue 8 Sept
High
17:58
5.03 m
Wed 9 Sept
Low
00:08
0.83 m
Wed 9 Sept
High
06:07
5.19 m
Wed 9 Sept
Low
12:44
-0.05 m
Wed 9 Sept
High
18:53
5.44 m
Thu 10 Sept
Low
00:58
0.42 m
Thu 10 Sept
High
06:55
5.65 m
Thu 10 Sept
Low
13:33
-0.48 m
Thu 10 Sept
High
19:39
5.73 m
Fri 11 Sept
Low
01:40
0.10 m
Fri 11 Sept
High
07:39
5.98 m
Fri 11 Sept
Low
14:18
-0.72 m
Fri 11 Sept
High
20:20
5.87 m
How these tide times are calculated
Data source
WorldTides harmonic predictions for the North Sea.
Reference station
Immingham (53.6183°N, 0.1817°W).
Prediction point
Morston Quay, Blakeney Harbour — the same clock as Blakeney, with no extra creek offset.
Datum
Chart Datum (CD) at Blakeney Bar. Heights are 1.4 m below the raw Immingham feed so a typical high water reads around 5 m.
Timezone
Europe/London — BST in summer, GMT in winter.
This harbour
Cley uses the Blakeney Quay offset: +15 minutes on the Blakeney baseline for high and low water. Heights remain Chart Datum at Blakeney Bar. There is no extra Cley-only shift.
Local knowledge adjustment
Immingham times are shifted so they match the harbour clock used on this coast. Real tides still vary with wind and pressure.
About these Cley Next the Sea times
Cley Next the Sea sits on the Glaven, east of Blakeney. Morston does not invent a third clock for Cley. It follows Blakeney Quay: about fifteen minutes after the Pit, the Bar, and Morston Quay.
That is the useful distinction. The BHA booklet is the harbour. Cley is not the harbour. If you read a Blakeney Harbour high water and stand at Cley, you are on the quay clock’s cousins — late by a quarter of an hour, and in much less water.
There is not a Pit here. The channel is narrower, the marshes take over, and a small neap does not give you harbour sailing. The window is still daylight around this later high water, for the people who do use the Glaven — not a promise of deep water under the village.
Common questions
Why does Cley match Blakeney Quay, not Blakeney Harbour?
Both sit up the Glaven from the Pit. The harbour clock is Bar and Pit. Quay and Cley share the +15 minute shift. Use the harbour page only if you mean the Pit.
Can you sail at Cley?
Some do, on the right tide, in the right boat. It is not Morston Quay. This page gives the clock and the daylight window. The water is yours to judge.
Are Cley and Blakeney village the same time?
On this site, yes — both on the Quay clock. They are not the same place. The channel between them is its own walk.
Is this for navigation?
No. The Glaven and the marshes are not a marked harbour. Planning only.
Cley Next the Sea · Tide Times