With an average temperature of 18.1 degrees Celsius in De Bilt, this past June was the warmest ever June in the Netherlands since temperature measurements started in 1901. The previous record was held jointly by June 1976 and 2017, with an average temperature of 18.0 degrees, meteorological institute KNMI reported.
Temperatures climbed to 20.1 degrees in De Bilt on Sunday, making Sunday the 116th official warm day in the Netherlands this year. Maximum temperatures are expected to climb to 22 degrees in De Bilt on Monday, which means that the 116 warm days record from 2003 will be broken, Weeronline reports.
Up to and including Thursday, the record number of official warm days is expected to climb to 120, according to the weather service. An official warm day is when temperatures climb to over 20 degrees at the national weather station in De Bilt.
So far this year the Netherlands had 51 summer days - days on which temperatures climbed to 25 degrees or higher in De Bilt, according to Weeronline. 2006 also had 51 summer days, but spread over the entire year.
Sunday was the 51st summer day of 2018. Only one more hot day is needed to break the 2006 record. This may happen on Wednesday or Thursday, when maximums of around 25 degrees are expected. Temperatures also often climb to above 25 degrees in late August and September, according to Weeronline. In 2006 the 51st summer day only happened on September 22nd.