A viticulturist's happy accident (too much Chardonnay!) turned into a Napa darling that went from 1,000 cases to 450,000 in just six years, and their downtown tasting room still brings the fun with wine flights, Syrah rosé Jell-o shots, and live music.
Checked against the winery’s website on September 3, 2026.
When to visit JaM Cellars
Monday10:00 AM - 10:00 PM
Tuesday10:00 AM - 10:00 PM
Wednesday10:00 AM - 10:00 PM
Thursday10:00 AM - 12:00 AM
Friday10:00 AM - 12:00 AM
Saturday10:00 AM - 12:00 AM
Sunday10:00 AM - 10:00 PM
Good to know about JaM Cellars
Yes, JaM Cellars has a tasting room open to visitors. Walk-ins are welcome, though booking ahead is safest on busy weekends.
JaM Cellars focuses on Chardonnay, Pinot Noir, Cabernet Sauvignon, Syrah, Sauvignon Blanc, and more. Signature bottles include Butter Chardonnay, Platinum Chardonnay, Platinum Pinot Noir, Platinum Cabernet Sauvignon, ButterZero non-alcoholic wines. When booking a tasting, ask which current release best represents the estate's style.
A tasting at JaM Cellars costs $45 per person, as listed on the winery's own website on September 3, 2026. Fees change with the season and the experience booked, so confirm the current price when you reserve.
Yes, JaM Cellars has a picnic area. Call ahead to confirm any corkage fee or outside-food policy. Some estates allow you to bring provisions; others have restrictions. Arrive early on weekends to secure a good spot.
Yes, JaM Cellars welcomes dogs. Policies usually cover outdoor areas only and expect dogs on a leash. Call ahead if you're bringing more than one, or if the weather is pushing everyone indoors.
JaM Cellars is in Napa, CA, in the Napa Valley wine region. Phone: (707) 265-7577. Confirm hours before visiting. Winery schedules vary seasonally.
JaM Cellars offers: Wine Tasting. Seated or guided experiences typically include more context about the wines and the estate's approach. Worth booking if you want depth over breadth.
Monday: 10:00 AM – 10:00 PM | Tuesday: 10:00 AM – 10:00 PM | Wednesday: 10:00 AM – 10:00 PM | Thursday: 10:00 AM – 12:00 AM | Friday: 10:00 AM – 12:00 AM | Saturday: 10:00 AM – 12:00 AM | Sunday: 10:00 AM – 10:00 PM Hours may vary seasonally. Confirm by phone or on their website before visiting.
Yes, JaM Cellars has outdoor seating. Availability is weather-dependent. Call ahead to confirm, particularly outside summer months.
