Napa Valley · SpringMonth summary
Napa Valley weather in May
✅ Excellent
🌡️ Temperature min / max
10°C – 25°C
🌧 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°C, 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
🎯 Open terraces and outdoor markets — best season for al fresco dining Spring marks the start of the good season in Napa Valley. Temperatures rise (25°C) 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.
Browse by month
All months for Napa Valley
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 May, Napa Valley averages 25°C, 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°C
- 🌧 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 25°C, 13.9h of sunshine and 10% rain, conditions are very favourable.
What to do in Napa Valley in May?
With 25°C and 13.9h of sunshine, all outdoor activities are possible: hiking, sightseeing and terraces.
Accommodation
Find a place to stay in Napa Valley
Find places to stay in Napa Valley in May
Search on Hotels.com
Activities & tours
Activities and tours in Napa Valley
Guided tours, skip-the-line tickets and local experiences.
Browse activities on GetYourGuide
Flights
Find a flight to Napa Valley
Compare flights from all airlines.
Search flights
←
Explore also
Similar destinations in May
Rhodes
Paphos🌍 Top destinations
Other top destinations in May
Cabo San Lucas
Djerba
Sal
DakarWeather rankings
Compare destinations by weather
Best in EuropeGuides & comparisons