If you planning to travel to Santiago do Cacem Castle, Santiago de Cacem, Portugal, 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 7:27 AM. The temperature feels like 55.7 with a humidity level of 70 so dress accordingly. Cloud coverage is 2 percent with visibility at 14.9 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling east at a speed of 6 MPH. At the end of the day don’t miss the sunset at 5:15 PM.