Nantucket Harbor - Brant Point Lighthouse UV IndexUnited StatesMANantucket CountyNantucket Harbor - Brant Point Lighthouse1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAANantucket Harbor - Brant Point Lighthouse UV forecast issued yesterday at 2:18 pm. Next forecast at approx. 2:18 pm.Get WillyWeather+ to remove ads