Kim Annetta

When Does Summer Officially Start Uk 2024. Summer officially begins in the northern hemisphere today (june 20), marking the longest day of the year. The seasons are defined as spring (march, april, may), summer (june, july, august), autumn.

For example ‘june 21, summer begins’, but this leads to confusion when, in many european countries, june 24 is celebrated as midsummer day. The first day of summer is also known as the summer solstice, and in 2024 it happens on thursday, june 20 at 4:51 p.m.