Here is the current NWS forecast for the area immediately north of the event site. The site is near the dividing line of two zones. The southern forecast zone is similar. EXPECT the forecast and actual wind conditions to change some more over the next few days:
Overnight...East winds 10 knots. Seas 1 to 2 feet with a dominant period 7 seconds. Mostly smooth on the intracoastal waters.
Friday...East winds 10 to 15 knots. Seas 1 to 2 feet with a dominant period 7 seconds. A moderate chop on the intracoastal waters.
Friday Night...Southeast winds 15 knots. Seas 3 to 4 feet with a dominant period 4 seconds. A light chop on the intracoastal waters.
Saturday...South winds 15 to 20 knots. Seas 3 to 4 feet. Choppy on the intracoastal waters. Showers likely and chance of thunderstorms.
Saturday Night...Southwest winds 15 knots becoming west 10 to 15 knots after midnight. Seas 3 to 5 feet. A light chop on the intracoastal waters. Chance of showers in the evening.
Sunday...North winds 15 to 20 knots. Seas 5 to 6 feet. Choppy on the intracoastal waters. Slight chance of showers.
Sunday Night...Northeast winds 10 to 15 knots. Seas calm.
http://www.srh.noaa.gov/mfl/marine/
North winds are side onshore in Jupiter. True south winds are side offshore in Jupiter. It is possible that they may not be true south winds, could bend parallel to the coast nearshore, creating side shore winds. This despite the wider area forecast. Fingers crossed. May bring some nice swells in for the SUP portion of the event as well.
Watch the forecasts, have fun.