Everything you need to know about the dog days: definition, effects, and tips

  • The dog days are the hottest period of the year and occur between July 15 and August 15 in Spain.
  • Temperatures can exceed 40 degrees Celsius and have serious effects on health and the environment.
  • It is recommended to stay hydrated and avoid going out during the hottest hours.
  • The term is related to the star Sirius and its historical influence on the perception of weather.

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It seems that this week the dreaded dog days of summer have finally arrived, so we'll have to be patient and use fans and air conditioners to cope with such high temperatures.

The dog days refer to the hottest time of the year, when temperatures easily exceed the sweltering 40 degrees.

According to various statistics, the dog days of summer are the hottest period of the year, when temperatures reach their highest levels. This period typically lasts from July 15th to August 15th, although it varies depending on the location. There is no exact start date due to several factors, such as the sun's high altitude at the beginning of summer and the intense solar radiation that causes the Earth to overheat.

heat

Thus, the dog days of summer begin later in Spain, while in other parts of Europe and Africa they start earlier. During this period, hot, dry air masses from North Africa are common. In these cases, it is important to take certain precautions to avoid dangerous heatstroke, as it can sometimes be fatal.

According to weather forecasts, this heat wave will last three to four days with temperatures exceeding 40 degrees Celsius. However, the heat is here to stay, and there are areas of the peninsula where the average temperature during these weeks will be around 38 degrees Celsius. Given this, the only option is to stay cool and protect oneself as much as possible from the extremely high temperatures typical of summer.

What is the Dog Day?

In meteorology , the term "dog days" refers to the period of the year with the highest temperatures. This phenomenon occurs in the Northern Hemisphere and typically takes place between mid-July and early August. During this time, temperatures can exceed 40 degrees Celsius, causing extreme heat, especially in southern Spain.

An interesting point to note is that the dog days of summer in Spain have a start and end date that can vary depending on the geographical location . For example, in coastal areas, the sea acts as a moderator of temperatures, unlike what happens inland, where the heat is more intense. If you would like to learn more about this phenomenon, you can consult the information on the dog days of summer for further details.

Origin of the Term Canícula

The word "dog days" comes from the Latin word "canicula ," meaning "little dog." This term is associated with the star Sirius , which is part of the constellation Canis Major . In ancient times, the heliacal rising of this star coincided with the beginning of the hottest period of the year, which was often interpreted as an omen of extreme heat.

In ancient times, our ancestors associated the brightness of Sirius with rising temperatures, since every time the star appeared on the horizon, the heat intensified. However, due to the precession of the equinoxes, today Sirius appears in the morning sky long after the dog days have begun.

Weather Conditions During the Dog Days

In Spain, the dog days of summer are characterized by a series of weather phenomena that raise local temperatures. During this period, heat waves caused by high pressure systems associated with masses of warm air from North Africa are common. This situation not only causes an increase in temperature but also a decrease in humidity, intensifying the feeling of heat.

Furthermore, the days during the dog days of summer are usually dry with clear skies , adding another element to the extreme weather conditions. During this time, temperatures can be extremely dangerous, especially for at-risk groups such as the elderly, children, and people with chronic illnesses.

Heat wave in Europe, 2003
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Highest Temperatures Recorded During the Dog Days

An alarming aspect of the heatwave is the extreme temperature records reached in recent years. On July 23, 1995 , the highest temperature ever recorded in Spain was registered, reaching 46,6 degrees Celsius at the airports of Córdoba and Seville . This figure not only marks a record but also highlights the impact of climate change, which has allowed heat waves to become increasingly intense and prolonged.

Another notable event occurred on August 1, 2003 , when temperatures reached 45 degrees Celsius in the city of Badajoz , an event still remembered as one of the most extreme in recent history. Further north, in Amieva-Camporriondi (Asturias) , a temperature of 42 degrees Celsius was recorded on July 31, 2013 , setting a new record for the region.

Effects of the Heatwave on Health and the Environment

The heat wave not only affects temperatures but also has serious consequences for people's health. Heatstroke is common and can be fatal if not treated properly. Dehydration is another major risk, and it is crucial to take preventative measures, such as drinking enough water and avoiding sun exposure during the hottest hours of the day.

From an environmental perspective, high temperatures contribute to drought , affecting agricultural crops. Water scarcity can lead to decreased agricultural production and an increased likelihood of wildfires, as dry land becomes much more susceptible to burning. For more information on this topic, you can visit the article on wildfires.

Wildlife is also affected by the heat wave, as the scarcity of water and pasture can lead to increased mortality among various species. It is essential to adopt conservation measures to protect local fauna and flora from this climatic phenomenon.

Tips for Coping with the Heatwave

During the dog days, it's vital to take precautions to mitigate their effects. Here are some recommendations:

  • Constant hydration: Drink water regularly to avoid dehydration.
  • Avoid going out during the hottest hours: Limit physical activity and direct sun exposure between 12 and 18 p.m.
  • Wear light clothing: Opt for light-colored clothing and breathable materials.
  • Protect yourself from the sun: Wear hats and sunglasses to protect your skin and eyes.
  • Light meals: Prefer fresh foods such as salads and fruits that contain higher water content.

Below are images that represent the dog days and their effects:

Canicula

The heat wave, although a seasonal phenomenon, is increasingly impacted by climate change . As global temperatures rise, the duration and severity of the heat wave also tend to increase, highlighting the urgent need for more effective environmental policies. On a personal level, we must be mindful of our habits and make small changes that can have a significant impact on our health and well-being during these hot months.

Dog days and summer heat

Prado
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