Do we want sex more in summer? The answer to this question, like almost all questions in life, is: "it depends." It is true that, on the one hand, increasing daylight hours activates hormones and neutrotransmitters related to pleasure.
Heat can help you enjoy sexual relations more because, on the one hand, it stimulates the production of oxytocin, endorphins and serotonin, which causes an increase in sexual desire and, on the other, it causes vasodilation of muscle fibers, which leads to a further increase in blood flow to the genitals.
Another positive effect of high temperatures on sexual activity is that more testosterone and estrogen are released, which contribute to improving libido and arousal.
However, one of the most recent studies on the relationship between heat and sexual desire reveals that sexual relations increase in summer, but only if the temperatures are not excessive. The researchers concluded that births increased during the ten months after summer in countries with temperate or cold climates with summers of high but not torrid temperatures, while the number did not increase in that same period in countries with warm or tropical climates, with extreme summer seasons and excessive temperatures. In conclusion, in this case too, virtue is in the middle.