Barnstable Harbor - Mattakeese Wharf UV IndexUnited StatesMABarnstable CountyBarnstable Harbor - Mattakeese Wharf1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAABarnstable Harbor - Mattakeese Wharf UV forecast issued yesterday at 3:17 pm. Next forecast at approx. 3:17 pm.Get WillyWeather+ to remove ads