Lihou Island
49°27'75N 2°40'0W
Every year the Guernsey Met Office produce an annual report that includes data gathered from the weather station situated on Lihou Island. Worth a read as it also includes data on tides and astronomical events for 2017.
Here is a detailed list of the ormering tides this year. Lihou is as popular as ever for ormering but please observe the causeway times carefully.
Here is a link to the official States of Guernsey causeway times. These times are also published at either end of the causeway.