12 months * 7 continents = 84 observations.
84 divided by 300 is approximately 1/3. (OK, a bit less.)
And this is very crude probability, I know.
My point is only that somewhere in the world at some point during the year it's likely be hot, hot, hot. This headline, 'hottest in 300 years,' is not at all as impressive as it seems at first. I'd wager that if you add Hawaii and a few other places to the mix, you'd find at least one spot in the world most every year that breaks a 300-year old record.
Let me put this even more simply. It's a big planet and a year is a long time. Somewhere on the planet somebody is likely going to have the hottest month in three centuries. The observation that Denmark is hot means exactly nothing.