The table shows average annual weather statistics in four capital cities: Edinburgh, Paris, Helsinki, and Casablanca. The information given includes annual rainfall, the number of wet days, annual snowfall, the annual temperature range and the hours of sunlight per day.
Overall, the rainiest city of this group is Edinburgh, while the most humid is Helsinki in number of wet days over a year. Helsinki also is the snowiest, with the lowest average temperature range yearly, whereas Casablanca is the warmest and drier with the greatest number of hours of daily sunlight.
According to the table, annual rainfall is higher in Edinburgh, where it rains 550 mm per year and Helsinki is the second rainiest city with 500 mm, while Casablanca only registers 26 mm annually. In terms of humidity, Helsinki exhibits 181 wet days over a year, followed by Edinburgh with 150 days. In contrast, in Paris there are 78 days with humidity per year and just 5 days in Casablanca. Moreover, snowfall is frequent in Helsinki with 450 mm annually, which is contrasting with the other cities. For example, in Edinburgh falls 75 mm of snow per year, in Paris 10 mm and Casablanca has not snow at all.
These weather conditions impact on the temperature range amplitude. For instance, Casablanca reaches 9 to 35°C, while in Helsinki temperature varies between -10 and 18°C. In addition, the number of hours of sunlight are only 4 in Edinburgh, very similar to Helsinki with 4.7 hours, 6.5 in Paris and it climbs to 9 in the dry city of Casablanca.