1. Choose a location
Search for a UK town or coastal area. Seyva uses the selected coordinates and identifies a nearby tide station.
2. Combine the live data
The service brings together hourly weather, tide events, sea temperature where available, and current water-quality information.
3. Match an activity window
For the public page, paddleboarding uses a 7 mph maximum wind and 12°C minimum air temperature. Swimming uses an 11 mph maximum wind. Both favour high tide, daylight hours and current pollution checks. These are broad starter settings, not personal advice.
4. Show the clearest result
Excellent means a window matches the settings without identified warnings. Good means the window is usable but includes a caution. No match means the available windows did not meet the starter settings.
Forecasts and feeds can be delayed, incomplete or wrong. Always recheck official and local information before entering the water.