Lots of people do seem to travel in Nov, Dec, Jan etc they must go for the daytime temperatures I guess and except that they will need to eat indoors of an evening. I guess if you are clued up it is not such a surprise.
As Doe probably knows already we have been several times in January and are heading back to Sharm again over the New Year and it is indeed mainly for the daytime temperature, going AI we do eat indoors at the hotel some evenings however you will also find us sitting outside down in Sharm where there is a forrest of those gas patio heaters to sit under.
We understand that going away at that time of year in all reality we will be sitting indooors to eat or at the very least having to wear some form of cardigan / jumper and sitting under a heater.
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Mind you similar to what Shell mentions we have always found Luxor to be much warmer in the winter months and have been able to walk along the Kornish or sit outdoors at the hotel easily.
You just can't tell with the weather, first time in Sharm (end of Jan) it was raining when we arrived, cloudy for 4 days, a bit of sun then heavy rain when we left and me complaining that we should have gone back to Luxor instead, our last visit Jan of this year was actually very pleasant and warm with during the day but definitely a cardigan or jumper for evening time.