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 7:24 AM. The temperature feels like 66.75 with a humidity level of 69 so dress accordingly. Cloud coverage is 75 percent with visibility at 14.4 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southeast at a speed of 19 MPH. At the end of the day don’t miss the sunset at 5:16 PM.