Researchers at Villanova University, led by Patrick Markey have found that interest in sex, at least in the United States appears to peak around both early summer and early winter, specifically during June and December. He and his colleagues came to these conclusions, as they describe in their paper published in the Archives of Sexual Behavior, after studying key terms that people use in online search engines, such as Google. Live Science, in commenting on the research says the researches compiled data from four years of Internet searching and that the peaks and valleys were almost identical each year. In an earlier article in Slate Magazine, contributing writer By J. Bryan Lowder looked into the issue of whether people are more interested in sex during warmer weather in general.
Lowder looked at a variety of research that has been done over the years and concluded that warm weather does appear to cause people to be more interested in sex, but only when it comes about as a change. This jibes with the research done by Markey el who found that searchers for keywords relating to sex in general, searches for a partner, and pornography peaked during the early months of summer just as the hot weather was starting to arrive. Lowder wondered if it had to do with people showing more skin, and found studies that show that people who live in climates such as south Florida, and thus more skin showing, ten to have sex more often on average than those in more northern climes such as Minnesota. This new research seems to agree with that line of thinking showing that the peak occurs when people first start shedding their clothes but then declines as they presumably get used to it.
But none of this can explain why Markey and colleagues found a similar peak in December. Though they can’t say for sure, the researchers theorize that the spikes in interest in sex tend to spike during times when people are pushed into being around more strangers than normal. In the early summer, it’s because people go on vacations, go to the pool or attend summer parties. In December, it’s holiday shopping and parties. This is only partly born out by research, Lowder says, that show an increase in birth rates nine months later, in March (from getting busy in June) but not so much in September (which should occur if people get busy in December).
The end result is that this new research appears to back up earlier reports of heightened interest in sex by the average American during June and December, but still doesn’t adequately explain why.