Thanks Greenjack. I've since found this, and as you say, the concern is mainly for south/southeasterlies:
SPECIAL CONSIDERATIONS
The outcrop of high ground immediately to the S of the Runway causes difficult local wind effects. Winds from the S and SE of 10-15kts cause WINDSHEAR and turbulence. Winds from the S and SE of more than 15kts cause: wind direction and speed to vary along the Runway at a given time (horizontal windshear), wind direction and speed to continuously change at a given point on the Runway (turbulent windshear). Severe turbulence in the final approach, take off and initial climb areas Report windshear and turbulence to ATC.