Origin and production methods have a big influence on the ideal serving temperature. White wines from cooler climates, like Germany or New Zealand, have higher acidity and are at their best when served cold. By contrast, wines from warmer regions, such as southern France or Australia, are often fuller and more intense in flavor, so they taste better at a slightly higher temperature.
Maturation also plays a role. A young white wine can handle a lower temperature well. But a wine aged in oak needs a bit more warmth to show off all its complex aromas.