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  in January 1987 to  in July 1994.