Following are some resources that you might find useful before heading off to the field.

OzWind - Melbourne

BOM - Melbourne forecast
BOM - Port Phillip WIND forecast
BOM - Melbourne Weather Radar image
BOM - Current Weather observations

Monash Uni (Frankston) - Weather station
CSIRO Aspendale - Weather station
Cranbourne - Weather station
Parkdale WebCam and Current Wind

Notes:   
1 m/s = 3.6 km/hr
1 knot = 1.852 km/hr