The article does the right thing connecting the dots:

The world has warmed by about 1.4C because of fossil fuel pollution, which forms a heat-trapping blanket around the Earth, and the destruction of nature, which sucks carbon dioxide from the air.

In Europe, which has warmed nearly twice as fast as the global average, a warm and dry air mass hanging over much of the Iberian peninsula and France has coincided with high levels of summer sunshine that have pushed temperatures even higher.

I’ll also note that land in general has warmed much more than sea surface temperatures. Unless you’re living on a not-too-big island in a temperate location (eg: where The Guardian writers live) you’re encountering this.