The solstice around the 21st gives June the longest days of the year, though at 25 degrees north the swing is smaller than in Europe: about 13 hours 45 minutes of daylight against 10 hours 20 minutes in December. What June 2030 delivers instead is heat — readings in the middle forties inland by the end of the month, and overnight lows that stop falling below 30°C on the coast.
The 30 days of June 2030 contain no holiday fixed to a date, so the count rests on the weekends unless the Hijri New Year falls inside the month, in which case one day comes out. That single day is either useful or invisible depending on the weekday it takes, and there is no mechanism anywhere in UAE law to move it.
The move from June into July takes the UAE into its quietest weeks. June 2030 hands over the longest days of the year — already shortening, imperceptibly, from the solstice onwards — to the month that empties the schools, the roads and half of every office in the country.