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The mean relative humidity exceeds 50% throughout the year at most Tasmanian stations, the exceptions being inland stations in summer. Relative humidity is generally higher in the morning than the afternoon, and higher in coastal areas than inland. Days of high temperature combined with uncomfortably high humidity are rare, and usually associated with a north-easterly airstream. In the east, south-east and the Fingal Valley, warm dry winds from a west or north-west direction may occasionally have a relative humidity as low as 10%. This is a result of air descending from just above mountainous terrain into lowlands.