The period when summer starts is June 20 or 21 in the Northern Hemisphere. It concludes on the 23rd of September. In the Southern Hemisphere it begins around December 22 and ends on March 23.
Its most conspicuous element is that days are longer and it is very warm. It is the hottest of all four seasons. The reason is that as the Earth tilts, one half (the Northern or Southern Hemisphere) is fully exposed to the sun. The result is the warm weather and climate. Depending on the region, the period may also reduce the moisture in the air. The end result is that when summer starts, the air will have a “dry” feel to it.
Because they are on opposite ends, the summer or hottest months in one hemisphere will be the coldest in the other. So the warm months of June, July and August in the United States are the coldest in lower South America and Australia. The metrological aspects of summer usually begin earlier than the astronomical one.
It is also worth noting that the midway point is marked by the equinoxes and solstices. This is contrary to most solstices are the beginning. Aside from the equinoxes and the solstices, special occasions mark its beginnings. This is exemplified in the US. The time when summer starts “officially” is on Memorial Day. This takes place on the final Monday of May.
Effects on Plants and Flowers
There are various signs that the season is at hand. Flowers and fruits bloom or reach their peak. Among flowers, the elderflowers emerge fully. So do the Zepherine Drouhin, a kind of rose. This flower is one of the fastest to blossom during the season.
Among plants, the Geraniums spread very quickly. They can easily cover a wide surface quite easily. The tomato grows the fastest at this time. Depending on the region it can grow several inches in a few weeks. Irises also expand rapidly.
Effect on Animals
Birds generally flourish and come together when summer starts. Blackbirds spend the time caring for and nurturing the young. It is also common to see sparrows gather at the honeysuckle. Other birds that thrive in this period are starlings. In the United States, it is common to hear robins chirping until past eight in the evening. They are usually around lilacs and other flowers which are blooming.
Trees and Foliage
In parts of the Northern Hemisphere the season can experience some rainfall. In the forests most of the animals, from coyotes to foxes and deer frolic. Usually the leaves and foliage appear in various shades.
In terms of human activity it is the time when people go to beaches or venture to island resorts for vacations. In cultural terms, it is the period when most people go to the movies and relax.
A lot of activities take place when summer starts. These include summer school, going on trips or other sporting events. Whatever the variations in duration, its arrival heralds a period of activity for man and nature.