Forecasters have predicted a record-breaking heatwave in June and July, which experts believe could lead to a mini baby boom.
Researchers have discovered that men become more virile if they are exposed to more sunlight, explaining why many couples seem to conceive on sun holidays.
A study, published in the Human Reproduction journal, found that a high level of vitamin D, which is produced by the human body when exposed to the sun, produces sperm that are better at swimming towards the egg and are more penetrative.
Scientists at Copenhagen University tested the quality of sperm from 300 men and analysed samples from a further 40 while also measuring the amount of vitamin D in their blood. Sperm moved faster and penetrated better in men with higher levels.
On that basis, the number of conceptions could soar from next month, as forecasters claim we are facing the hottest summer on record, with temperatures possibly topping 30°C.
Even Irish bookies have predicted temperatures will be just as hot in the bedroom as outside.
Yesterday, Paddy Power was offering odds of 6/5 for next year to produce the most live babies on record, as a consequence of a surge in conceptions this summer.
Spokesperson Sharon McHugh said: “I’m sure the scientists are right with their findings, but I think it’s far more likely that the baby boom in the hot weather could come down to the fact that people wear less.
“Everyone is happier and friskier when the sun comes out and so far, everything is pointing, towards this year being a scorcher, so 2012 could notch up the most live births on record.”
Last week, weather experts predicted a heatwave in June and July, adding that the warmest summer ever “is a distinct possibility”.
Although the weather will cool down in August, meteorologists said the blistering heat could be on a par with the summer of 1976, when temperatures in June topped 32°C.
Experts say it’s possible the summer could see the hottest day ever, even beating the record of 33.3°C set on June 26, 1887.