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Average air temperatures in May are a low of 66°F (19°C) andhigh of 82°F (28°C).The racing time (11AM-3PM) temperatures average75-80°F(24-27°C),with average water temperature of 77°F(25°C).
This chart shows the average wind strength at HYC from 11AM-3PM over a 6-year period from April 15 to May 15. This is not a24-hour average, but zoomed into our racing times. The southeasterly sea breeze is quite reliable this time of year, andwe should be past the time for major cold fronts, which would come from the north-northeast. They tend to fizzle out by late April.
The bay averages 10-12 feet deep, and if the southeasterly sea breeze has been going for some time, there will be chop. If we get an unlikely cold front, then it can be flatter depending onthe strength of the wind.The early fleet on the race course typically will be in flatter and somewhat lighter conditions than in the later afternoon. The tides are less than 2 feet, so the current flow is negligible.