Chile's southernmost and coolest major wine valley, in the Region de Bio-Bio. Bio-Bio is the frontier of Chilean viticulture — where the continental climate gives way to maritime conditions from the Pacific and where temperatures are cool enough for Pinot Noir, Riesling, Gewurztraminer, and Muscat. The indigenous Pais grape (Mission) survives here in old-vine plantations dating to the 17th century Spanish missions. A new generation of natural wine producers is discovering the valley's potential.
| Year | Rating | Notes |
|---|---|---|
| 2023 | — | Cool Pacific-influenced season; exceptional Pais and Muscat freshness; emerging quality from the valley |
| 2022 | — | Outstanding cool vintage for Bio-Bio; finest old-vine Pais and Riesling in recent memory |
| 2021 | — | Good vintage with reliable cool-climate character; natural wine producers particularly rewarded |
| 2020 | — | Long, cool season; exceptional freshness in all varietals planted in the valley |
| 2019 | — | Benchmark Bio-Bio vintage; increasing critical attention as the valley's quality becomes undeniable |