You're never going to be "guaranteed" good weather in November, but with average temperatures mid 50s to mid 60s, it can be glorious. Have a look at wunderground.com which has weather history for Málaga available, and nerjaweather.com which has details for Nerja, 50 km east, where I live. The other advantage of November, of course, is that it is not as busy as the peak summer months.