Napa Valley, United StatesQuick decision
When to visit Napa Valley?
🌞 Best time overall
June
🌡️ Optimal temperature
13°C–30°C in June
🌧 Least rain
2% rainy days in June
🌧 Wettest month
January (35%)
📅 Best score
9.4/10
By trip type
Best time by type of trip
Wine tastingYear-round — 400+ wineries, Cabernet Sauvignon, Opus One.
Hot air balloon rideApr–Oct — sunrise flight over vineyards, valley views.
Michelin-starred diningYear-round — French Laundry, farm-to-table, wine-pairing menus.
BudgetNov–Mar — crush season over, tasting fees reduced, fewer crowds.
Monthly climate data
Napa Valley weather month by month
| Month | Min °C | Max °C | Rainy days (%) | Precip. mm/d | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 5°C | 13°C | 35% | 4.8 | 8.3h | 5.1/10 |
| ⛅ February | 5°C | 14°C | 25% | 4.4 | 10.0h | 7.0/10 |
| ⛅ March | 6°C | 15°C | 36% | 3.6 | 11.0h | 7.0/10 |
| 🌤️ April | 8°C | 20°C | 16% | 1.0 | 12.4h | 7.9/10 |
| ☀️ May | 10°C | 25°C | 10% | 0.7 | 13.9h | 9.2/10 |
| ☀️ June | 13°C | 30°C | 2% | 0.1 | 14.1h | 9.4/10 |
| ☀️ July | 14°C | 33°C | 0% | 0.0 | 14.0h | 8.4/10 |
| ☀️ August | 15°C | 33°C | 0% | 0.0 | 13.1h | 8.2/10 |
| ☀️ September | 14°C | 30°C | 4% | 0.2 | 12.0h | 8.9/10 |
| ☀️ October | 11°C | 25°C | 11% | 1.4 | 10.3h | 8.5/10 |
| ⛅ November | 7°C | 17°C | 20% | 2.3 | 9.6h | 7.1/10 |
| ⛅ December | 5°C | 13°C | 32% | 4.0 | 8.0h | 5.3/10 |
Ideal
Fair
Challenging climate
Source: Open-Meteo · 10 years
Seasonal breakdown
What to expect each season
🌸 Spring (Mar–May) — Good time
Average 20°C, 21% rainy days, 12.4h sunshine/day. Score: 8.0/10.
☀️ Summer (Jun–Aug) — Excellent time
Average 32°C, 1% rainy days, 13.7h sunshine/day. Score: 8.7/10.
🍂 Autumn (Sep–Nov) — Good time
Average 24°C, 12% rainy days, 10.6h sunshine/day. Score: 8.2/10.
❄️ Winter (Dec–Feb) — Acceptable
Average 13°C, 31% rainy days, 8.8h sunshine/day. Score: 5.8/10.
Accommodation
Find a place to stay in Napa Valley
Check availability during the recommended period
Tip : February, March offer a good weather/price balance — decent score with fewer crowds.
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Activities and tours in Napa Valley
Guided tours, skip-the-line tickets and local experiences.
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Flights
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Monthly weather
Detailed weather by month
FAQ
Frequently asked questions
June is ideal with 2% rainy days and 30°C.
January is the wettest month with 35% rainy days.
Yes, June is the best month with an average of 30°C.
In winter, the average score is 5.8/10. Acceptable conditions for cultural visits.
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