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
Fri
5AM - 9AM
27 February 2026
- W 4–8 knots veering N 4-8 knots.
- 9°C
- SW 1.0m at 8s period
- UV Index: 0 - Low
- Cloudy
Fri
9AM - 1PM
27 February 2026
- N 5–8 knots.
- 8 to 11°C
- SW 0.9m at 8s period
- UV Index: 1 - Low
- Cloudy
Fri
1PM - 5PM
27 February 2026
- N 5–9 knots.
- 9 to 11°C
- SW 0.7m at 9s period
- UV Index: 0 - Low
- Cloudy