About Swansea Marina
In Swansea Bay tidal streams flow anti-clockwise for 9.5 hours (Swansea HW -3.5 to +6), with at times a race off Mumbles Hd. From HW -6 to -3 the stream reverses, setting North past Mumbles Hd towards Swansea. Keep seaward of Mixon Shoal. When North of SW Inner Green Grounds (SWIGG) SCM It buoy, Q (6) + LFI 15s keep to West of dredged channel and clear of commercial ships. Yachts must motor in harbour and approach, maximum speed 4 knots.

Facilities
COORDINATES
51.61635 N, -3.93418 E
Port Information
Weather Forecast
Sat
1PM - 5PM
13 June 2026
- W 8–10 knots.
- 17°C
- Cloudy
Sat
5PM - 9PM
13 June 2026
- W 9 knots decreasing to 6 knots.
- Decreasing from 18 to 14°C
- W 0.5m at 5s period
- UV Index: 0 - Low
- Partly cloudy
Sat
9PM - 5AM
13 June 2026
- W 2–6 knots veering N 2-6 knots.
- 8 to 14°C
- Calm sea
- UV Index: 0 - Low
- Partly cloudy