The prevailing wind is predominantly westerly, so launching from the clubhouse is usually straightforward. North-easterly winds make the slipway a lee shore however, and launching may be difficult if winds are strong or gusty.
Clywedog - in common with many inland waters - "enjoys" considerable variation in wind strength and direction, over quite short periods - hours.
The positive side is that sailors can experience a wide range of conditions all in the same day. The downside that you set out kitted for sunshine and end up blue with the cold
Bouys are placed at the points shown below and racing takes place over courses selected from these by the OD (Officer of the Day)