Hungrier? Exercising in much colder temperatures

[PamNY]

I always feel like I burn a lot more calories in the cold. The first winter I cycled a lot, my weight dropped and I had to force myself to eat more.

There could have been other variables, and I didn't keep track of mileage. It's possible I traveled farther when I wasn't stopping to watch birds, chat with friends, etc.

[Crankin]

Although my appetite does increase from long, hard rides in the warm weather, I do notice this much more at this time of year. Last Saturday, I did a measly 8-10K x country skiing, and maybe another 8K of snow shoeing. I was famished the rest of the day, despite eating a sandwich for lunch and a Luna Bar. I tried fighting it, but did succumb to a couple of healthier type snacks.
Perhaps this is why my weight is up a little. I am ravenously hungry...

[Anelia]

Of course there is a link between appetite and cold weather. The unit "calorie" is used for the amount of energy needed to HEAT 1 gr of water by 1 kelvin. You can be sure that you need more energy to keep your body warm in winter. My coach said to increase the food intake by 10% in cold weather. But we do not ride in SUCH cold weather. Maybe when it's -5 or 0, but more than that...I use the trainer
Your body is telling you that it needs more energy, don't neglect its signals

[Eden]

Pretty sure that is actually that is incorrect.... You don't burn significantly more when it's cold. I haven't found the full study that I read yet, but here is a summary of one that is, if not the same one, similar.

Many people feel extremely hungry after immersion in cold water. As a result they simply replace all the calories they’ve burned with a large post-exercise meal, completely wiping out any potential weight loss benefits of the swimming.

In a University of Florida study, a group of men exercised for 45 minutes in both neutral (33 degrees Celsius) and cold (20 degrees Celsius) water temperatures. They were then allowed to eat as much food as they wanted.

The men burned a similar number of calories in the cold and neutral water conditions, averaging 505 and 517 calories, respectively. However, calorie intake after exercise in the cold water averaged 877 calories, which was 44% more than for the neutral temperature.

Granted the 10% your coach recommends isn't a huge amount more intake, but certainly much more than the difference in what was observed, which was only around 2% more, 10-12 calories, not 50.