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.