Napa Valley · SpringMonth summary
Napa Valley weather in May
✅ Excellent
🌡️ Temperature min / max
50°F – 77°F
🌧 Rainy days
10% of days
☀️ Sunshine
13.9h per day on average
🌊 🌊 Season
Spring
⭐ ⭐ Weather score
9.2/10
📅 📅 Best month
June (9.4/10)
Quick decision
Should you visit Napa Valley in May?
✅ Excellent
✅ Yes if: you want to combine beach, sightseeing and hiking — versatile weather (25°F, little rain).
❌ No if: you want to avoid tourist crowds — this is the busiest period.
Our take: Visiting Napa Valley in May is a safe bet: great weather, only 10% chance of rain.
By trip type
Napa Valley in May by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in May
Spring marks the start of the good season in Napa Valley. Temperatures rise (25°F) and tourists have not yet arrived en masse. Rain is virtually absent (10% of days) — ideal for planning without a backup. This is one of the best times of year to visit Napa Valley.
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All months for Napa Valley
Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 41°F | 55°F | 35% | 0.2in | 8.3h | 5.1/10 |
| ⛅ February | 41°F | 57°F | 25% | 0.2in | 10.0h | 7.0/10 |
| ⛅ March | 43°F | 59°F | 36% | 0.1in | 11.0h | 7.0/10 |
| 🌤️ April | 46°F | 68°F | 16% | 0.0in | 12.4h | 7.9/10 |
| ☀️ May | 50°F | 77°F | 10% | 0.0in | 13.9h | 9.2/10 |
| ☀️ June | 55°F | 86°F | 2% | 0.0in | 14.1h | 9.4/10 |
| ☀️ July | 57°F | 91°F | 0% | 0.0in | 14.0h | 8.4/10 |
| ☀️ August | 59°F | 91°F | 0% | 0.0in | 13.1h | 8.2/10 |
| ☀️ September | 57°F | 86°F | 4% | 0.0in | 12.0h | 8.9/10 |
| ☀️ October | 52°F | 77°F | 11% | 0.1in | 10.3h | 8.5/10 |
| ⛅ November | 45°F | 63°F | 20% | 0.1in | 9.6h | 7.1/10 |
| ⛅ December | 41°F | 55°F | 32% | 0.2in | 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 May, Napa Valley averages 77°F, 10% rainy days and 13.9h of sunshine per day. Overall weather score: 9.2/10.
See methodology →
Comparison
May vs June (best month)
The best month is June (score 9.4/10). Difference:
- 🌡️ Max temperature : +5°F
- 🌧 Rainy days : -8%
- ☀️ Sunshine : +0.2h/day
FAQ
FAQ — Napa Valley in May
Is May a good time to visit Napa Valley?
May is an excellent time to visit Napa Valley (score 9.2/10). With 77°F, 13.9h of sunshine and 10% rain, conditions are very favourable.
What to do in Napa Valley in May?
With 77°F and 13.9h of sunshine, all outdoor activities are possible: hiking, sightseeing and terraces.
Accommodation
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Activities & tours
Activities and tours in Napa Valley
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