National Network of Regional Coastal Monitoring Programmes

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Note that these are real-time data and are not quality-controlled. Long-range graphs are plotted from a randomised subsample of half-hourly data.

Bideford Bay


Additional Information

 Wave buoy location  51° 03.48' N  004° 16.62' W
 WMO code  6201024
 Approximate water depth  11 m CD
 Approximate spring tidal range  8.4 m
 Storm alert threshold  5.04 m


Wave data are measured using a Datawell Directional WaveRider Mk III buoy. The buoy was deployed on 17 June 2009, at which time the magnetic declination at the site was 3.3° west, changing by 0.15° east per year. Wave direction is reported following the nautical convention, meaning that the direction is where the waves come from, measured clockwise from magnetic north.

The shore station is kindly hosted by RNLI Appledore.


13/07/2024 The buoy went adrift. It has been recovered and is currently moored in Clovelly harbour. It will be redeployed as soon as feasible.
30/11/2023 Scheduled service
09/06/2023 The BT visit to repair the line fault has been pushed back to 30/06/2023.
03/06/2023 Transmission from the shore station has been interrupted by a fault in the BT line. A site visit is planned for 08/06/2023.
03/05/2023 Scheduled service
12/11/2022 There is an issue with the shore station computer, it will be replaced asap. Update: the computer was replaced on 15/11/2022 and data has resumed.
11/10/2022 Scheduled service
14/05/2022 Scheduled service
02/02/2022 No buoy data since 01/02 due to issue with RX-CE. The latter was swapped. 
22/01/2022 Scheduled service
20/03/2021 The buoy was redeployed.
16/03/2021 The buoy was recovered due to no HF signal. The HF antenna had snapped at the base. 
22/09/2020 Scheduled service
23/03/2020 The buoy was redeployed
27/02/2020 The buoy was recovered due to HF issues. The HF antenna had snapped. 
03/07/2019 Scheduled service
19/04/2019 Due to issues with the internet connection at the shore station, data transmission to the website is intermittant. 
10/01/2019 Scheduled service
19/05/2018 Scheduled service
11/01/2018 The buoy has been redeployed. 
03/01/2018 Due to the rough sea conditions, the buoy had come off its mooring and was recovered. A replacement will be deployed as soon as conditions permit. 
20/09/2017 Schedule service
21/11/2016 Due to a powercut, no data was received between 12:30 and 20:00. 
20/10/2016 Scheduled service
19/08/2016 Due to maintenance works at the shore station the power supply was disrupted over the last couple of days but data should be coming through from now on.
19/04/2016 Scheduled service
02/09/2015   Scheduled service
11/02/2015 Scheduled service. Buoy replaced.
03/04/2014 Scheduled service
04/06/2013 Scheduled service
12/12/2012 Buoy re-deployed
14/11/2012 The buoy came adrift around midnight but was recovered later in the day. It will be inspected prior to re-deployment.
29/08/2012 Braddick's Holiday Park has kindly hosted the shore station since the buoy's deployment in 2009, but is no longer able to do so due to refurbishments.  We much appreciated the co-operation of Mr Braddick and his staff.  RNLI Appledore have kindly agreed to host the new shore station.  The buoy will be offline briefly while the shore station is moved.
28/05/2012 Scheduled service, buoy replaced.
28/10/2011 Buoy re-deployed
17/10/2011 The buoy has been recovered but the weather is too rough for re-deployment.
15/10/2011 The buoy has come adrift; a boat is en route to recover
13/12/2009 Scheduled service
24/10/2009 There is a major problem with the electrics at the shore station so no data are being received.  Engineers have been called.
30/08/2010 Scheduled service
07/01/2011 Refurbishment works at the shore station meant the computer was turned off, should be back online 08/01/2011
21/02/2011 Continued refurbishment works at the shore station has caused loss of power.