Late May in Norfolk range from low 70s to low 80s. It is mostly sunny with medium humidity and occasional rain. The water temperature is typically in the high 60s. Wind speed is typically 8-12 knots, bearing is frontal driven with South being the prevailing direction. It could rain, or it might not. Storms are quick to form with a passing cold front, approaching from the northwest and passing quickly. Nor'easters tend to hang on a little longer and make for some sporty conditions.
Tidal fluctuation is about 3.5'. Currents run faster the further out you go, however do not tend to have a large impact on the racing area. Wind, moon and frontal systems all have an impact on the amount of water in the basin, which in turn impacts the current. After the tide comes in, it usually goes out.