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 6:12 AM. The temperature feels like 68 with a humidity level of 62 so dress accordingly. Cloud coverage is 10 percent with visibility at 14.9 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling north-northwest at a speed of 11 MPH. At the end of the day don’t miss the sunset at 6:46 PM.