How long does wine last after opening?

Once a bottle of wine is opened, it starts to oxidize, causing its flavor and aroma to deteriorate over time. The lifespan of an opened bottle of wine depends on various factors, including the type of wine and storage conditions. On average, lighter white wines like Sauvignon Blanc or Pinot Grigio can last about 3-5 days in the refrigerator before losing their freshness. Heavier white wines like Chardonnay or Viognier can last a bit longer, around 5-7 days. Red wines generally have a longer shelf life after opening, usually lasting 3-7 days. Fortified wines, like Port or Sherry, can typically last up to 28 days. However, it's crucial to reseal the bottle tightly, refrigerate it, and consume it as soon as possible to preserve the wine's quality.