Napa Valley · WinterMonth summary
Napa Valley weather in January
⚠️ Fair
🌡️ Temperature min / max
5°C – 13°C
🌧 Rainy days
35% of days
☀️ Sunshine
8.3h per day on average
🌊 🌊 Season
Winter
⭐ ⭐ Weather score
5.1/10
📅 📅 Best month
June (9.4/10)
Quick decision
Should you visit Napa Valley in January?
⚠️ Fair
✅ Yes if: you enjoy winter atmosphere and the lowest prices of the year.
❌ No if: you're looking for sunshine or outdoor activities.
Our take: Not the best window: 35% rain risk and 8.3h of sunshine. June is much safer.
By trip type
Napa Valley in January by trip type
- 🏙️ 🏙️ City break / culture : ⚠️ Possible
- 🚶 🚶 Outdoor activities : ❌ Not recommended
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in January
🎯 Quiet season in the vineyards — intimate tastings and reduced prices In January, Napa Valley sees 13°C during the day with 8.3h of sunshine per day. Expect rain on 35% of days — a light raincoat in the bag is recommended.
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Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | 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
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In January, Napa Valley averages 13°C, 35% rainy days and 8.3h of sunshine per day. Overall weather score: 5.1/10.
See methodology →
Comparison
January vs June (best month)
The best month is June (score 9.4/10). Difference:
- 🌡️ Max temperature : +17°C
- 🌧 Rainy days : -33%
- ☀️ Sunshine : +5.8h/day
FAQ
FAQ — Napa Valley in January
Is January a good time to visit Napa Valley?
January is not recommended for Napa Valley (score 5.1/10). With 35% rainy days and 8.3h of sunshine, consider June (9.4/10) instead.
What's the weather like in Napa Valley in January?
It's cool with 13°C daytime and 5°C at night. 8.3h of sunshine per day. Pack warm clothes and favour indoor visits.
Accommodation
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