It feels like the summer has already started, if you feel the temperatures outside. Yet the astronomical summer only starts on Saturday, June 21. Beerend van Straten, meteorologist at WEATHER Onlinelooks ahead to this weekend: “Summer kicks off in style this year.”
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First of all, Berend looks at this weekend. In many places it can be above 30 degrees on Saturday, he says. Sunday it is even hotter, with temperatures up to 35 degrees. In the evening there might come thunderstorms, until that time the sun will work overtime.
Longest day
Saturday, June 21 is the longest day in the Netherlands. The sun will only drop after 10 p.m. and it keeps shining until midnight. “That also means that it cools very slowly in the evening. Around 7 p.m. it is even tropical warm in many places with 30 degrees!”
After sunset the temperature drops slightly, but it doesn’t really cool down at night. According to Berend, it will be a real tropical night, where the mercury remains above 20 degrees.
Astronomical summer
The meteorological summer already started on June 1, the astronomical summer starts on June 21. What exactly is that? It KNMI explains That the meteorological seasons have been established in international agreements, so that meteorologists can compare the seasons in different countries. The astronomical summer is determined by the position of the sun.