Seyva Learn

Practical answers for swimmers and paddlers

Short, plain-English guides to the signals behind Seyva’s live coastal outlooks.

Start with the question you have

Use these guides to understand wind, tides, cold water, rainfall and the character of different coastal settings. Each guide points back to a live forecast so the explanation stays connected to the place and day you are planning.

💨 How do I read a coastal wind forecast?Understand sustained wind, gusts, direction and why the exact shoreline matters.🌊 How do tides affect paddleboarding?See how tide height, movement, launch points and return routes fit together.🌧️ What should I check after heavy rain before sea swimming?Use official water-quality information, rainfall context and local observations carefully.🧥 What should I wear for sea swimming?Think about water temperature, wind, visibility, changing and your own response to cold.🧭 How do I plan a sea-swim route?Choose entry and exit points, allow for tide movement and build in a shorter option.⚓ What changes at a harbour, estuary or pier?Understand why local flow, traffic, structures and access need separate attention.🏄 How much wind is too much for paddleboarding?Why direction, gusts and the return leg matter as much as one wind number.🏊 What is the best tide for sea swimming?How high water, low water and moving tide can change a beach and a plan.💧 How do I check sea-water quality?What official classifications, current warnings and overflow information can tell you.🌡️ How should I think about sea temperature?Cold-water shock, wetsuits, acclimatisation and planning the exit.

Take the next step

When you know which signals matter, choose a location and see today’s weather, tide times, water-quality information and possible activity windows.

Coastal forecastsOpen a permanent page for a UK coastal location.Sea swimmingSee the swimming-specific forecast checks.PaddleboardingSee wind, tide and route-planning checks.

Written and reviewed by Ollie BartlettFounder of Seyva and a sea swimmer and paddleboarder based near Worthing. Reviewed 16 September 2026. Seyva is a planning aid, not professional safety advice.