However, the jury is still out on many of these issues, as there is a lack of comprehensive studies. According to data collected by NCSL : -Twenty-one states currently have school districts (with public schools) operating on a four-day week.
In the capital Lisbon average temperatures range from 8 degrees Centigrade in January to 29 degrees Centigrade in July. But it is not unusual to get temperatures well over 30 degrees Centigrade in some summers particularly at the holiday resort of Faro in far south of Portugal.
Summer Weather. Summer in Lisbon is always sunny and hot. With average temperatures varying between the high teens and high 20s, sometimes it can get much hotter and temperatures in the mid 30s are not uncommon, especially in August. The Atlantic breeze ensures that the temperatures don't get toooo high and uncomfortable.