COPENHAGEN, Denmark — Fire authorities in Denmark have banned the use of open fires across the country because of dry forests and grass as Scandinavia sees an unusual long stretch of very warm weather.

The ban, which entered into force Wednesday, came after weeks with little rain. Denmark's Meteorological Institute has said this year saw the warmest June in 26 years. Institute spokesman Mikael Scharling said no precipitation was in sight.

The institute recorded an average of 15 degrees Celcius (59 F) for May, breaking a previous record of 13.8 C (56.8 F) for May from 1889.

Similar fire risk warnings have been made in southern parts of Sweden and Norway.