A nuchal translucency ultrasound (commonly called a ânuchal scanâ or âNT scanâ) is an ultrasound performed between 11.5 and 13 weeks 6 days gestation. It is usually part of an assessment called combined first trimester screening.he nuchal translucency is the fluid found at the back of your babyâs head and neck, just beneath the skin. The thickness of this fluid can be precisely measured and this is called the nuchal translucency (or NT) measurement.
Weather in Porto in September. The average maximum daytime temperature in Porto in September is a warm 24Â°C (75Â°F). There are usually 8 hours of bright sunshine each day, which represents 60% of the 12 hours of daylight. The average sea temperature in and around Porto in September is 18Â°C (64Â°F). Expect 62mm (2.4 inches) of rainfall across the whole of September with 8 days with some rain falling. Maximum UV levels will be high (6 UV index) at midday when the skies are clear.
It depends the exact time you go, as usually September is hot in the beginning of the month and tends to gets a little bit colder at the end of the month. I would say that in the south (Algarve) the weather should be around 25Â°C, and still probably beach weather. In Lisbon it would probably be colder, probably around 20Â°C, so probably not the right weather to go to the beach. More info here: September Weather Averages for Algarve, Portugal, and September Weather Averages for Lisbon, Portugal.