Summer 2024: what weather forecasts for the season ?

“And 2024: what are the weather forecasts for the season?”

SUMMER SOLSTICE. The first day of summer 2024 occurred this Thursday, June 20. Will the good weather be there this year? We take stock of the weather that awaits us in the coming weeks.

Summer 2024 in France has begun this Thursday, June 20 à 10:50 p.m., with the astronomical phenomenon of the summer solstice, which occurs when the position of the sun reaches its maximum distance of the equator and thus corresponds to the longest day of the year in the northern hemisphere (in the northern hemisphere). the opposite of the winter solstice which will occur on December 21 and designates, still in our hemisphere, the shortest day of the year). This year the weather has been bad. It was a lovely first day of summer. in certain regions with thunderstorms, such as in Brittany. What weather has in store for us on this first day of summer? Despite a rainy spring and a still unstable episode throughout the year come, the summer period promises to be very hot… You will find out more below.

And if not, did you know that unlike &agrav; what we believe, this astronomical event of the summer solstice is true. does "fall" not always a June 21: it can happen on a "22", or even a "19" (although the next one will be in 2488…). Regularly, it takes place on June 20 like this year. As explained by the Sciences et Avenir website, during the 20th of June, it takes place on June 20th. In the 21st century, this event will occur 47 times on June 20. In short, its date is worth paying attention to in order to understand, precisely, why it does not always take place on the same day. This is also what our special page offers.

According to forecasts from Météo France, we must expect for the months of June, July and August&nbsp ;2024, à average temperatures above seasonal norms, which will make up for the difference in temperatures this spring, particularly in the south -West and the Mediterranean regions and Corsica which will have to face very dry weather, 50% more than normal. "For several years, consistent with the planetary trend of change climatic conditions, summers are more frequently above seasonal norms, explains Météo France. No other trend ;#39;is favored for the moment in the rest of the territory, and we still do not know whether we will have to face this threat. a summer scorching.

In the meantime, for the forecasts for the next 4 weeks according to Meteo Consult, if "the first 30°C can be reached in half of the year north by the middle of the week (…) this improvement will only be very temporary since a new cold drop should plunge near France and bring unstable and stormy weather again, followed by a drop in temperatures" up to 'à mid-July, throughout the territory & with the exception of the extreme southeast which will be preserved. and will experience fully summer weather.

How to define the summer solstice ? It corresponds to the time of the year when the trajectory of the Sun, seen from Earth, reaches its northern maximum (in the northern hemisphere) or southern maximum (in the northern hemisphere) ;egrave;re south). In other words, during the summer solstice, & our latitudes, the Sun "passes" à its zenith, at the level of the Tropic of Cancer. In reality, it is not a movement of our star which produces this phenomenon, but rather the revolution of the Earth around the Sun. Indeed, the axis of our planet is tilted. of 23 degrees relative to the plane of the ecliptic, that is to say the plane on which the Earth stands out. position in relation to the sun. We therefore have the illusion of a movement of the Sun in the sky. But a good diagram is sometimes better than a long speech…

< img alt = "Summer solstice" SRC = "https://img-4.linternaute.com/3tvziyppdqbqgkajc_3mjo7uoz0=/1080x/smart/adbf40d7565846138ad98bba13d56047/ccmcms- PG " /> The summer solstice is representedé &agrav; LEFT. © Graphies.thèque – Fotolia

Concretely, this phenomenon has numerous consequences that can be easily seen in the future. the naked eye (and with a clock in hand). It is at the time of the solstice that the sun passes highest in the sky. the moment of its zenith: the shadows shorten as much as possible. The star can then pass, for example, through 65° altitude relative to the the horizon. For comparison, at the time of the winter solstice, the sun does not rise until the winter solstice. 18° compared to &agrav; the horizon. Another consequence: it's this moment when the star rises and sets most towards the north (northeast in the morning, northwest in the evening).

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The most obvious consequence of the phenomenon of the summer solstice is the maximum elongation of the length of the visible day. From the next day, the length of the day will begin to gradually decrease. At first imperceptibly, then more and more quickly until the autumnal equinox. The Latin typology of the word solstice also translates this progression: sol (sun) and sistere (stop) remind us that it’s à This period is when the length of the day changes the least rapidly.

If the length of the day reaches its maximum at On the occasion of the solstice, it is not the same everywhere. The closer we get to the Arctic Circle, the more it increases. In the north of Norway, the Sun hardly goes below the horizon: there is no night outside. strictly speaking. Down there, the Sun completely stops setting at night. starting from the summer solstice at the Arctic Circle. In the southern hemisphere, the phenomenon is reversed. At the time of the summer solstice In our regions, Antarctica is submerged. in the darkness. Be careful though: if it's theoretically at the time of the summer solstice, it's a good idea. Whether the sun rises earliest in the morning or sets latest in the evening, this principle is not always strictly exact. The cause is the slightly elliptical path of the Earth around the Sun, marked by accelerations and slowdowns. The irregular shape of our planet also plays a role.

This is simply explained by the Gregorian calendar, as explained on the Numerama site. adopted in 1582 and it provides that a year lasts 365 days, except for leap years which occur every four years and during which there are 366 days with the addition of February 29. In fact, more than 365 days are needed to complete the process. For the Earth to make one revolution around the Sun, it takes precisely 365 days, 5 hours and 48 minutes. ;The decision to include leap years in the calendar was made taken to erase the gap between the duration of a year and the time of revolution. And this explains the d' timing of the summer solstices. 

While the phenomenon also falls on the day of the music festival, the summer solstice also occurs on the day of the music festival. traditionally gives rise to à the great fire festival of Saint John, which is then celebrated every June 24. This festival honors the summer season by drawing inspiration from the cult of the sun during Antiquity. An initially pagan practice of celebrating the harvests taken up by the Catholic Church, which Christianized it. e to celebrate it as a celebration of light, in particular thanks to the famous fires of Saint-Jean lit at night. nightfall.

In our northern hemisphere, the summer solstice corresponds to the longest days of the year. eacute;e. The time between sunrise and sunset can exceed 16 hours, compared to just 8 hours at the end of December at the time. of the winter solstice. The name Ph ne stems from the natural inclination of the Earth relative to the plane on which it orbits the Sun. Without this shift, the seasons as we know them on our planet would not exist! In our regions, the summer solstice takes place. therefore marks the start of the summer season. Halfway between the spring and autumn equinoxes, when night and day have exactly the same duration. Enough to make it a very special date.

The next autumnal equinox will take place on September 22. © Aleksandr Prokopenko_123RF

The date of the summer solstice This is generally the first piece of information we look for. know among gardeners, lovers of the hottest days or simply among those who like to be fixed on the ball of the seasons. On this point, it's relatively simple: the summer solstice' usually takes place on June 21. But be careful, there are still exceptions like this year 2024. He arrived Also in 2008, 2012 or 2020, as the summer solstice begins intervenes on June 20.

The calendar year (365 days) does not correspond to the calendar year (365 days). the tropical year, that is to say the exact duration that our star takes turn around our star © Vadim Sadovski_123RF

This phenomenon can also occur on June 22, as was the case in 1975 (the next occurrence will be in Hellip ; 2203). Even rarer, the summer solstice is even rarer. can, finally, arrive on June 19. It will be in 2488. Because the exact moment of the solstice changes each year. It is a matter of carefully evaluating the trajectory of the Earth in relation to the Sun, and our capacity to &agrav; model our time system and our calendar on these astronomical movements. Indeed, the calendar year (365 days) does not correspond to the calendar year (365 days). the tropical year , that is to say & the exact duration that our star takes revolve around our star (365 days, 5 hours, 48 ​​minutes and 45 seconds). If this "offset" is corrected by leap years, the elliptical trajectory of the Earth also plays a role which shifts the solstice each year. 

Here à what dates will the summer solstices take place? of the following years:

• Summer Solstice 2025: June 21
• Summer Solstice 2026: June 21
• Summer Solstice 2027: June 21