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
Wed
5AM - 9AM
29 April 2026
- NE 7–11 knots. Gusts up to 32 knots.
- Increasing from 5 to 11°C
- SE 0.4m at 6s period
- UV Index: 0 - Low
- Sunny
Wed
9AM - 1PM
29 April 2026
- E 10–16 knots. Gusts up to 28 knots.
- Increasing from 12 to 18°C
- SE 0.5m at 5s period
- UV Index: 4 - Moderate
- Sunny
Wed
1PM - 5PM
29 April 2026
- E 15–17 knots. Gusts up to 30 knots.
- 17 to 21°C
- E 0.6m at 4s period
- UV Index: 4 - Moderate
- Sunny