To determine the best temperature to serve your bottle, here is a summary table:

Temperature according to serving time (in °C)
Type of Champagne For aperitif For a meal For dessert
Brut Non VIntyage 8 to 10 10 to 12 10
Rosé 8 to 10 10 to 12 10
Blanc de Blancs 8 to 10 10 to 12 10
Blanc de Noir 10 12 10
Vintage 12 12 to 14 12 to 14
Demi-sec 8 10 8

In any case, assume that without any cooling method (ice bucket, ice bag, etc.), your wine will gain approximately 2°C every 10 minutes in a room where the average temperature is 25°C. So, don't hesitate to serve it a little colder.

You probably have other questions; here are our answers in the following links:

How to chill Champagne?

What type of glass should you use to enjoy Champagne?

I customize my bottle I ask for tailormade service