cloudy and characterised by low amounts of sunshine, ranging from only 20.7 hours of sunshine per month in December to 58.8 hours in February. Spring starts out cool, with freezing temperatures common in March and April, but gradually becomes warmer in May, when daytime temperatures average , although nighttime temperatures still remain cool, averaging from March to May. Snowfall is common in March and can occur in April. Summers are mild with daytime temperatures hovering around and nighttime temperatures averaging between from June to August. The warmest month is usually July, with an average of . During summer, partly cloudy or clear days are common and it is the sunniest season, ranging from 255.6 hours of sunshine in August to 312.1 hours in July although precipitation is higher during these months. As a consequence of its high latitude, at the summer solstice, daylight lasts for more than 18 hours and 30 minutes. Fall starts out mild, with a September average daily mean of and increasingly becomes cooler and cloudier towards the end of November. In the early parts of fall, temperatures commonly reach and at least one day above in September. In late fall, freezing temperatures become more common and snowfall can occur. Tallinn receives of precipitation annually, which is evenly distributed throughout the year although March, April and May are the driest months, averaging about , while July and August are the wettest months with of precipitation. The average humidity is 81%, ranging from a high of 89% to a low of 69% in May. Tallinn has an average windspeed of with winters being the windiest (around in January) and summers being the least windy at around in August. Extremes range from on 10 January 1987 to on 30 July 1994. According to a 2021 study commissioned by the British price comparison site Uswitch.com, Tallinn is the most unpredictable of European capitals in terms of weather conditions, with a total score of 69/100; the high score is mainly due to the high number of rainy days in the city and the variation in the duration of sunshine. Riga and Helsinki took second and third places. Administrative districts Tallinn is subdivided into eight administrative linnaosa (districts). Each district has a linnaosa valitsus (district government) which is managed by a linnaosavanem (district elder) who is appointed by the city government. The function of the "district governments" however is not directly governing,