If you planning to travel to Sao Martinho do Porto Beach, Caldas da Rainha, 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 7:30 AM. The temperature feels like 66.55 with a humidity level of 71 so dress accordingly. Cloud coverage is 69 percent with visibility at 9.7 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southeast at a speed of 22 MPH. At the end of the day don’t miss the sunset at 5:14 PM.