Sunny weather and temperatures of 30 degrees Celsius or more will prevail in Finland this week.

Blocking highs will cause a heat wave in Finland for this week starting on Tuesday, but temperatures of over 30 degrees Celsius become more widespread Wednesday.

Meteorologist Markus Mäntykannas of Foreca describes the hot weather from Wednesday through Saturday as “uncomfortable” and in some parts as “very uncomfortable.”

The most extreme temperatures of 33 degrees Celsius are likely to occur in southern and central Finland, especially inland.

This week may break the previous hot temperature record measured 85 years ago in Ähtäri, Southern Ostrobothnia, on June 24, 1935. That’s when the temperature climbed to 33.8 degrees Celsius.

Sources: Foreca, the Finnish Meteorologial Institute