Southwest Australia Wine Regions: Pemberton, Geographe, Manjimup & Peel

Pemberton, Geographe, Manjimup, and Peel each hold their own GI status within the South West Australia Zone, with Pemberton and Manjimup formalizing that recognition in February 2006. The regions share a broad southwestern location but differ markedly in topography, elevation, and climate. Pemberton sits between 6 and 317 meters elevation; Manjimup ranges from 108 to 345 meters; Peel stretches from sea level to 592 meters inland. Together, they represent some of the most geographically diverse wine country in Western Australia.

• All four regions fall under the South West Australia Zone GI
• Pemberton and Manjimup operate jointly through the Southern Forests Wine Association
• Peel is the closest to Perth, approximately 45 minutes south
• Geographe is an emerging region building its national reputation

The Indian Ocean is the defining moderating force across all four regions, with Pemberton and Manjimup also drawing influence from the Southern Ocean. Pemberton records 276mm of rainfall during the growing season and is recognized as one of Australia's premier cool-climate wine regions. Manjimup has a more continental character with cold winters. Geographe runs warm and Mediterranean, while Peel offers mild winters but hot summers along its Mediterranean-influenced corridor. Soils vary just as widely: Pemberton and Manjimup share vivid red loams and gravelly soils, Geographe transitions from sandy loams to gravelly clay, and Peel ranges from coastal limestone sands to ancient inland granite.

• Pemberton growing season rainfall: 276mm; cool maritime character
• Manjimup: continental influence with cold winters and red loam soils
• Geographe: warm Mediterranean climate with varied topography creating distinct microclimates
• Peel: limestone sands near the coast, ancient granite further inland

Each region has developed a grape identity shaped by its climate and soils. Chardonnay is the most widely planted variety in Pemberton, where it produces cool-climate whites alongside Semillon, Pinot Noir, and sparkling wines. Manjimup focuses on Bordeaux-style blends built around Cabernet Sauvignon and Merlot, with Verdelho also planted. Geographe grows the widest variety: Shiraz, Cabernet Sauvignon, Merlot, Tempranillo, Chardonnay, Sauvignon Blanc, and Semillon, producing full-bodied fruit-driven reds and crisp whites. Peel takes a broad approach with Chardonnay, Shiraz, Chenin Blanc, Semillon, Verdelho, Merlot, and Cabernet Sauvignon, yielding styles from sparkling to elegant reds.

• Pemberton: Chardonnay leads, with Pinot Noir and sparkling wines also notable
• Manjimup: Bordeaux-style reds from Cabernet Sauvignon and Merlot
• Geographe: widest varietal range, including Tempranillo alongside classic varieties
• Peel: most diverse styles, from Chenin Blanc and Verdelho to Shiraz and Cabernet

Pemberton's viticultural story began with experimental plantings in 1977, followed by commercial vineyards from 1982. Manjimup's potential was identified through research in the mid-1970s, with development following gradually. Peel carries the most striking historical arc: it once produced 95% of all Western Australian wine but has experienced a severe contraction in production since then. Geographe is the most recently developed of the four, currently building its national reputation. The formation of the Southern Forests Wine Association by Pemberton and Manjimup reflects a practical decision to pool resources and promote the subregion jointly.

• Pemberton: first experimental plantings 1977, commercial vineyards from 1982
• Manjimup: research identifying viticultural potential dates to the mid-1970s
• Peel: historically dominated Western Australian wine production; now significantly diminished
• Pemberton and Manjimup granted separate GI status February 2006