Napa weather by month
Napa Valley, renowned for its world-class wines, rolling hills, and charming towns, is a destination that beckons visitors year-round. But to truly enjoy everything Napa has to offer, understanding the weather is key. This guide breaks down the Napa Valley weather by month, helping you plan the perfect trip, no matter your preference.
January: Cool & Cozy
January in Napa Valley is the heart of winter. Expect cool temperatures, averaging highs in the mid-50s (°F) and lows in the upper 30s (°F). Rainfall is common, contributing to the lush green landscapes. While not ideal for outdoor activities every day, it’s a fantastic time for wine tasting in cozy tasting rooms, enjoying fireside dinners, and taking advantage of lower accommodation rates. It’s also pruning season in the vineyards, offering a unique glimpse into the winemaking process.
February: Continued Winter Rains
February mirrors January in many ways – cool temperatures (highs around 57°F, lows in the low 40s °F) and frequent rainfall. The vineyards remain dormant, and the valley takes on a tranquil, peaceful atmosphere. This is a great month for indoor activities like spa treatments, cooking classes, and exploring the Oxbow Public Market in Napa.
March: Spring Begins to Bloom
March marks the transition from winter to spring. Temperatures begin to rise, with average highs reaching the low 60s (°F). Rainfall decreases, and the first signs of new growth appear in the vineyards. Wildflowers start to bloom, adding splashes of color to the landscape. It’s a beautiful time to visit, though still potentially wet.
April: Vibrant Springtime
April is arguably one of the best months to visit Napa Valley. The weather is mild and pleasant, with average highs in the mid-60s (°F) and lows in the upper 40s (°F). The vineyards are bursting with new growth, creating a stunning visual spectacle. It’s perfect for biking through the vineyards, picnicking amongst the vines, and enjoying outdoor wine tastings.
May: Warm Days & Gentle Breezes
May continues the trend of warm, sunny weather. Average highs climb into the low 70s (°F), and the evenings are comfortably mild. The valley is in full bloom, and the landscape is vibrant and lush. This is a popular time to visit, so booking accommodations and tours in advance is highly recommended.
June: Summer Arrives
June officially ushers in summer in Napa Valley. Temperatures consistently reach the 80s (°F), with warm, dry days and pleasant evenings. It’s an ideal time for outdoor activities like hot air balloon rides, hiking, and enjoying concerts in the vineyards.
July & August: Peak Summer Heat
July and August are the hottest months in Napa Valley, with average highs in the low 90s (°F). While the days are warm and sunny, evenings cool down slightly. It’s important to stay hydrated and seek shade during the hottest part of the day. Many wineries offer shaded tasting areas and air-conditioned spaces.
September: Harvest Season Begins
September marks the beginning of harvest season, a particularly exciting time to visit Napa Valley. The weather remains warm and dry, with average highs in the upper 80s (°F). The vineyards are buzzing with activity as grapes are harvested and transported to the wineries. It’s a busy time, so expect crowds and higher prices.
October: Harvest Continues & Fall Colors Emerge
October continues the harvest festivities, with the valley bathed in the golden hues of fall. Temperatures are mild, averaging in the low 70s (°F). The air is crisp and clear, and the landscape is breathtaking. This is a popular time for wine tasting, vineyard tours, and enjoying the fall foliage.
November: Cool & Colorful
November brings cooler temperatures (highs in the mid-60s °F) and the final stages of harvest. The vineyards display stunning fall colors, creating a picturesque backdrop for wine tasting. Rainfall begins to increase, but there are still plenty of sunny days to enjoy.
December: Return to Winter
December sees a return to winter-like conditions, with cool temperatures (highs in the low 50s °F) and occasional rainfall. The vineyards are dormant, and the valley takes on a quiet, peaceful atmosphere. It’s a good time to enjoy the holiday festivities in Napa Valley’s charming towns.
Napa Weather by Month: A Quick Reference
| Month | Avg. High (°F) | Avg. Low (°F) | Rainfall (inches) |
|---|---|---|---|
| January | 54 | 39 | 4.2 |
| February | 57 | 41 | 3.8 |
| March | 62 | 44 | 3.2 |
| April | 66 | 48 | 2.4 |
| May | 72 | 52 | 1.5 |
| June | 78 | 57 | 0.7 |
| July | 85 | 61 | 0.3 |
| August | 86 | 62 | 0.3 |
| September | 84 | 60 | 0.5 |
| October | 74 | 53 | 1.4 |
| November | 64 | 46 | 2.6 |
| December | 52 | 39 | 3.7 |
Frequently Asked Questions (FAQ)
Q: What is the rainiest month in Napa Valley?
A: January is typically the rainiest month.
Q: What is the hottest month in Napa Valley?
A: July and August are the hottest months.
Q: When is harvest season in Napa Valley?
A: Harvest season generally runs from September through October.
Q: Is Napa Valley crowded during harvest?
A: Yes, harvest is a very popular time to visit, so expect larger crowds.
Q: What should I pack for a trip to Napa Valley in the spring?
A: Layers are key! Pack light jackets, sweaters, and comfortable walking shoes.
Resources
- Visit Napa Valley: https://www.visitnapavalley.com/
- National Weather Service – Napa: https://www.weather.gov/sto/
- Wine Country Weather: https://winecountryweather.com/
- Napa Valley Vintners: https://napavalleyvintners.com/
- California Grape Foundation: https://www.californiagrapes.org/
