Season guide · Napa Valley · United States
Napa Valley in summer
June–August: weather, crowds, prices and the best things to do this time of year.
Updated By the AMZBooking editorial team
Pictured: Chateau Montelena, Napa Valley · Photo: Grendelkhan, CC BY-SA 4.0
Quick answer
Warm to hot, dry days with cool nights; ideal for balloon flights and outdoor dining, busy at weekends. Expect highs up to 31°C (88°F) and lows around 11°C (52°F), with about 1 rainy days across June–August. June is among the best months of the year to visit.
Key facts
- Months
- June–August
- Temperatures
- 11°C (52°F) to 31°C (88°F)
- Rainy days in the season
- About 1
- Crowds
- Busy
- Hotel prices
- High
Plan a trip to Napa Valley
Compare flights, places to stay and rental cars, then book with the provider you choose.
Weather in summer
| Month | High | Low | Rainy days | Daylight | Crowds |
|---|---|---|---|---|---|
| June | 29°C (84°F) | 11°C (52°F) | 1 | 14.8 h | 4/5 |
| July | 31°C (88°F) | 12°C (54°F) | 0 | 14.6 h | 4/5 |
| August | 31°C (88°F) | 12°C (54°F) | 0 | 13.6 h | 4/5 |
Compared with the rest of the year: average highs of 30°C (86°F) against a yearly 23°C (73°F), and 1 of the year's roughly 55 rainy days fall in these 3 months. Crowds rate 4/5 and hotel prices 4/5 on average.
What's on in summer
Recurring events; dates move from year to year, so confirm with the organiser.
- June: Auction Napa Valley charity wine auction (usually early June)
- July: Fourth of July celebrations in Napa towns
- August: Harvest begins (usually mid-to-late August)
Make the most of the weather
Nature · Calistoga
Old Faithful Geyser of California
Ask at the entrance about the expected time of the next eruption so you do not miss it.
- Time needed
- 1 hour
- Cost
- Low cost
- Kids
- Nature
- Outdoors
Historic site · St Helena
Bale Grist Mill State Historic Park
A water-powered mill built in 1846 with a large wooden waterwheel, among the oldest of its kind in California.
- Time needed
- 1 hour
- Cost
- Low cost
- History
- Kids
- Outdoors
- Off the beaten path
Experience · Yountville
Hot-air balloon flight
Plan the flight early in your trip so it can be rescheduled if winds cancel it, and dress in layers for the chilly pre-dawn start.
- Time needed
- 3–4 hours with transfers
- Cost
- Expensive
- Views
- Couples
- Photo spot
- Iconic
Experience · Downtown Napa
Napa Valley Vine Trail
A paved walking and cycling path that runs from Napa's Kennedy Park through downtown to Yountville, passing vineyards along the way, with further sections being built up-valley.
- Time needed
- 2–4 hours
- Cost
- Free
- Active
- Free
- Outdoors
- Kids
Nature · Calistoga
Robert Louis Stevenson State Park
Start early in summer because there is little shade, and turn around at the halfway viewpoint if time or heat runs short.
- Time needed
- 4–5 hours
- Cost
- Free
- Active
- Views
- Outdoors
- Free
Day trips in summer
- San Francisco (About 1.5 hours by car, or bus and ferry) — The Golden Gate Bridge, the Ferry Building, cable cars and Chinatown are a day trip away.
- Healdsburg and the Russian River Valley (About 1 hour 15 minutes by car) — Healdsburg's plaza is lined with tasting rooms, restaurants and shops, and nearby Dry Creek and Russian River valleys are known for Zinfandel, Pinot Noir and Chardonnay.
What to pack
- Light, breathable clothes, a sun hat and high-factor sunscreen
- Comfortable walking shoes
Other times of year
Questions travellers ask
+Is summer a good time to visit Napa Valley?
Yes: June is among the best months. Warm to hot, dry days with cool nights; ideal for balloon flights and outdoor dining, busy at weekends.
+What is the weather like in Napa Valley in summer?
Highs of up to 31°C (88°F) and lows around 11°C (52°F), with about 1 rainy days over the season.