In general you should really serve wine at a no more than the 650F mark. Anything more than that will make the wine taste different. But that’s only in general. Ideally each wine or wine type has a certain wine serving temperatures at which it’s best served and these are what you should be aiming for.
Unfortunately we can’t always hit this mark, so the best advice I can offer you is not to let it go beyond 65 degrees fahrenheit . To ensure this you can always chill the wine beforehand, and if you need to, bring the temperature of it up to the right level before you serve it by leaving out to warm.
The guide I have given in this article is just a small one and by no means contains all the wines or the temperatures needed. These are also only guidelines and to be used as such...more