Thanks for your Link:

Sun hours:
Nürnberg: 1698 hours
Kobenhagen: 1540 hours

Raindays:
Nürnberg: 114 days
Kobenhagen: 112 days

Tmax average in Mai-sept
Nürnberg: 21,6°C
Kobenhagen: 18,2°C

Tmax year average
Nürnberg: 13,41°C
Kobenhagen: 11,08°C

Tmin year average
Nürnberg: 4,25°C
Kobenhagen: 5,08°C

Tmax average Nov-March
Nürnberg: 5°C
Kobenhagen: 4°C

Tmin average Nov-March:
Nürnberg: -1,6°C
Kobenhagen: -0,4°C

So i sum up:

Nürnberg Tmax 3,4°C warmer in summer each day in winter Tmax 1°C warmer than Kobenhagen.
Only the Tmin in winter is warmer ( difference 1,2°C) in the North at the sea.
We have also 140 sun hours more than Kobenhagen... ;)
Not to forget the felt Temperature because of the stronger sun... we have not so much windy so the city centre is often sweltering.
Not saying that this is better than sea climate.