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
Tue
5AM - 9AM
19 May 2026
- SW 16 knots decreasing to 13 knots. Gusts up to 30 knots.
- 12°C
- SW 1.1m at 5s period
- UV Index: 0 - Low
- Chance of showers
Tue
9AM - 1PM
19 May 2026
- SW 15 knots increasing to 17 knots. Gusts up to 27 knots.
- 12°C
- SW 1.1m at 5s period
- UV Index: 2 - Low
- Chance of showers
Tue
1PM - 5PM
19 May 2026
- SW 13–19 knots. Gusts up to 29 knots.
- 12°C
- SW 1.3m at 5s period
- UV Index: 5 - Moderate
- Cloudy