This graph shows the tide height in Guernsey along with daylight and twilight times and forecasted wind, weather and temperature for the next few days. The current time is shown as a vertical red line. Times are automatically adjusted for GMT / BST.
Heights at which specific piers will cover are shown, along with the heights at which specific slipways / steps begin to cover, for those that prefer sand-free swimming!
This site also hosts a weather graph which shows up-to-the-minute wind, temperature & pressure data - here.
Tidal data © Crown Copyright. Reproduced with permission of the UK Hydrographic Office.