The average temperature in Mariehamn, Åland Islands, Finland is 5.4 °C (42 °F).
The range of average monthly temperatures is 21.5 °C.
The warmest average max/ high temperature are 21 °C (70 °F) in July.
The coolest average min/ low temperature are -8 °C (18 °F) in February.
Mariehamn, Åland Islands receives on average 558 mm (22.0 in) of precipitation annually or 47 mm (1.8 in) each month
