No surprise: Google searches for all wines peak annually in December. White wines show increased interest in Summer as well.
General interest in red wine was lower during the peak of the financial crisis. White wine was hardly affected.
Cabernet Sauvignon wine is back in favor with the American public. Merlot however shows a steady decline in interest, and is now overtaken by Pinot Noir and Cabernet Sauvignon. Effect of the Sideways movie (2004) worn off?
Most sought after wine on the Internet is Pinot Noir.
Zinfandel fans seem the most loyal, as interest since 2004 has remained stable.
For the white varietals, Chardonnay is unbeaten as the USA white wine of choice, but interest in other varietals, like Riesling and Sauvignon Blanc is growing.