My wife and I will be exploring Istanbul for 10 days in January in celebration of our 15th wedding anniversary! The city has always been on my bucket list of places to visit and I am sure I will have plenty of questions over then next few months as I do my research here but I thought to first ask about travel in January.
From what I gather the weather is wintery but not extremely cold (like London or Paris which we have done in the past). We don't plan on going anywhere where we would need to dress to formally and we tend to be pack casual clothing that can be layered, jeans or slacks, shirt, a sweater, polarfleece, light rain jacket and a scarf, etc. Will the proximity to water make it seem colder at that time of year to bring a heavier jacket?
We also usually enjoy winter travel because there are less tourists and long lines for entry to places or restaurants. Will this be the case in Istanbul? Should we be aware of anything then like winter hours for attractions or local holidays. Are any major sights closed at that time of year?