If you planning to travel to Alcaldia, San Juan, Puerto Rico, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 10:23 AM. The temperature feels like 85.85 with a humidity level of 89 so dress accordingly. Cloud coverage is 78 percent with visibility at 7 percent. Today’s UV index is 6, don’t forget the sunscreen if you need it! Today’s winds are traveling east-southeast at a speed of 6 MPH. At the end of the day don’t miss the sunset at 9:44 PM.