The best value window is November 10 to December 10
After the half-term spike in late October and before the Christmas market crowds arrive in late November, there is a four-week window where Granada is at its quietest and cheapest outside of January. Hotel prices are at autumn lows, the Alhambra is easy to book, the weather is mild (12–16°C with sun most days), and the city is running on local rhythm rather than tourist volume. This window does not appear in any guidebook's seasonal breakdown because it falls between the usual seasonal narratives. It is the single best value period in the whole calendar.