Researchers compared the current high temperatures with historical records from seven weather stations, in different parts of Europe.
Their preliminary report found that the "signal of climate change is unambiguous," in this summer's heat.
They also say the scale of the heatwave in the Arctic is unprecedented.
The scale and breadth of the current heat being experienced across Europe has prompted many questions about the influence of global warming on extreme events.
To try and see if there is a connection, researchers looked at data from seven weather stations, in Finland, Denmark, Ireland, the Netherlands, Norway and Sweden.
They chose these locations because they all had digitised records dating back to the early 1900s, unlike the UK. The team also used computer models to assess the scale of human-influenced climate change.
The researchers found that in the weather stations in the Netherlands, Ireland and Denmark, climate change has generally increased the odds of the current heatwave by more than two-fold.