The climate of Odense is Baltic, that is to say, relatively continental, with cold winters and mild to pleasantly warm summers.
The city is located on the island of Funen, east of southern Jutland.
The average temperature of the coldest month (February) is of 1.3 °C (34 °F), that of the warmest month (July) is of 17.9 °C (64 °F). During the coldest winters, the temperature dropped to -20/-21 °C (-4/-6 °F), as happened in January 1985 and December 2010. In summer, 32 °C (89.5 °F) were reached in 2018. Here are the average temperatures.
Odense - Average temperatures
Min (°C)-1-103610131310530
Max (°C)4471316202322191395
Min (°F)303032374350555550413732
Max (°F)393945556168737266554841

Precipitation amounts to 560 millimeters (22 inches) per year: so, it is at an intermediate level. It ranges from 30 mm (1.2 in) in the driest months (February, April) to 60 mm (2.4 in) in the wettest (October). Here is the average precipitation.
Odense - Average precipitation

The sea temperature ranges between 2 °C (36 °F) and 18 °C (64 °F). So, it never becomes warm for swimming (if not for Northern Europeans). Here are the average sea temperatures.
Odense - Sea temperature
Temp (°C)323610151718161295
Temp (°F)373637435059636461544841


Best Time

The best time to visit Odense is the summer, from June to August, since it is the mildest season. However, you must take into account some rainy days and a bit of cold at night.