Joselio Weather - A page with weather maps of the Caribbean, Virgin Islands and Puerto Rico, plus hurricane updates during the storm season.
National Weather Service - Local NOAA office provides forecasts and warnings plus satellite and radar images and marine forecast.
Tropical Rainfall - Overview on tropical rain precipitation in the area.
Weather Underground - Puerto Rico - Displays current conditions for all major cities on one page, with five-day forecast and more detailed information for each available.
Weather Underground Tropical - Atlantic satellite map, sea surface temperature and hurricane advisory providing links to weather information around the world.