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
Sun
5AM - 9AM
15 March 2026
- SW 9 knots increasing to 14 knots. Gusts up to 22 knots.
- 4 to 8°C
- SW 0.6-0.9m at 5s period
- UV Index: 0 - Low
- Cloudy
Sun
9AM - 1PM
15 March 2026
- S 13–19 knots veering W 13-19 knots. Gusts up to 28 knots.
- 7 to 10°C
- SW 0.9-1.4m at 5s period
- UV Index: 0 - Low
- Chance of showers
Sun
1PM - 5PM
15 March 2026
- W 13–18 knots. Gusts up to 27 knots.
- 8 to 10°C
- SW 1.2m at 5s period
- UV Index: 0 - Low
- Cloudy