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
04 July 2026
- W 12 knots. Gusts up to 19 knots.
- 21 to 24°C
- Sunny
Sat
5PM - 9PM
04 July 2026
- W 12 knots. Gusts up to 19 knots.
- Decreasing from 22 to 16°C
- W 0.6m at 4s period
- UV Index: 0 - Low
- Mostly fine
Sat
9PM - 5AM
04 July 2026
- W 9 knots decreasing to 4 knots. Gusts up to 17 knots.
- 13 to 17°C
- W 0.6m at 5s period
- UV Index: 0 - Low
- Cloudy