 Odense has a temperate oceanic climate , classified as Köppen zone Cfb . Mild summers feature average maximum temperatures exceeding 20 ° C ( 68 ° F ) , while winters are characterised by minimum temperatures dropping just below freezing . The hottest months on average are July and August with highs of 21 ° C ( 70 ° F ) and daily mean temperatures of 17 ° C ( 63 ° F ) and 16 ° C ( 61 ° F ) respectively . These are also the wettest months , with August receiving 80 mm ( 3 @.@ 1 in ) and July 64 mm ( 2 @.@ 5 in ) of rain on average . Extratropical cyclones frequently affect the region , contributing to abundant precipitation . The coldest months are January and February , with a daily mean temperature of 0 ° C ( 32 ° F ) , and lows of − 2 ° C ( 28 ° F ) and − 3 ° C ( 26 ° F ) respectively . It is common for Odense Fjord to contain ice between January and March , and the entrance is kept clear by icebreakers . The tidal range in the fjord varies up to 0 @.@ 6 metres ( 2 ft 0 in ) , and winds from the west and northeast may raise the water level by up to 1 @.@ 8 metres ( 5 ft 11 in ) and winds from the east and southwest may lower it by up to 1 @.@ 5 metres ( 4 ft 11 in ) . Climate data for the city are recorded at Hans Christian Andersen Airport ( ICAO : <unk> ) . 
