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 7:08 AM. The temperature feels like 54.55 with a humidity level of 88 so dress accordingly. Cloud coverage is 9 percent with visibility at 14.3 percent. Today’s UV index is 5, don’t forget the sunscreen if you need it! Today’s winds are traveling east at a speed of 4 MPH. At the end of the day don’t miss the sunset at 6:29 PM.