Several southern French towns set records for May on Wednesday, s temperatures, while the month as a whole is on track to be the hottest since records began, according to the national weather service.

On Wednesday, towns in southern France such as Albi, Toulouse, and Montelimar set records of 33.4-33.9 degrees Celsius (92.1-93.0 degrees Fahrenheit), while areas on the west and northern coasts also set records, according to Meteo-France.

The country has been in the grip of an extraordinary warm spell for this time of year, with the last 37 days in a row featuring temperatures above the average.

It was “highly probable” that May 2022 would be the hottest since records began, surpassing the previous high set in May 2011, Meteo-France said.

“It’s a warm period, long-lasting, wide-reaching and intense, that is exceptional for this time of year,” meteorologist Matthieu Sorel from Meteo-France told AFP.

The warm spell did not meet the technical definition of a heatwave — when average nation-wide temperatures need to surpass 25.3C for three consecutive days.

But it is causing major problems for farmers and warnings that it might affect France’s wheat crop which enters a crucial growth stage in May.

Wheat prices are at record levels globally, mostly due to the war in Ukraine, which was a major exporter of the cereal before Russia’s attack began in February.

According to a new academic report released last week by experts in the World Weather Attribution (WWA) consortium, all heatwaves today bear the unmistakable and measurable fingerprint of global warming.

Temperatures in India and Pakistan have recently broken records, and Spain has issued extreme heat warnings in some southern areas this week.