San Diego · SpringMonth summary
San Diego weather in May
✅ Good
🌡️ Temperature min / max
14°C – 20°C
🌧 Rainy days
10% of days
☀️ Sunshine
11.7h per day on average
🌊 🌊 Season
Spring
⭐ ⭐ Weather score
8.0/10
📅 📅 Best month
July (9.1/10)
Quick decision
Should you visit San Diego in May?
✅ Good
✅ Yes if: you want good weather with lower prices than peak season.
❌ No if: you need guaranteed perfect weather — some mixed days are possible.
Our take: May is a good time to visit San Diego. July remains slightly better (+1.1 pts).
By trip type
San Diego in May by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ⚠️ Possible
- 💰 💰 Budget : 🌿 Shoulder
Local context
What to expect in May
🎯 Quiet uncrowded beaches — ideal for coastal walks Spring marks the start of the good season in San Diego. Temperatures rise (20°C) and tourists have not yet arrived en masse. Rain is virtually absent (10% of days) — ideal for planning without a backup. A good balance between weather and crowds, even if July (9.1/10) remains theoretically better.
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All months for San Diego
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 8°C | 17°C | 20% | 2.4 | 9.9h | 7.2/10 |
| ⛅ February | 9°C | 17°C | 18% | 2.0 | 10.0h | 7.2/10 |
| ⛅ March | 10°C | 17°C | 28% | 2.1 | 11.2h | 7.2/10 |
| 🌤️ April | 13°C | 19°C | 12% | 0.7 | 12.0h | 7.8/10 |
| 🌤️ May | 14°C | 20°C | 10% | 0.4 | 11.7h | 8.0/10 |
| 🌤️ June | 16°C | 22°C | 2% | 0.1 | 12.0h | 8.6/10 |
| 🌤️ July | 18°C | 24°C | 0% | 0.1 | 12.5h | 9.1/10 |
| ☀️ August | 19°C | 25°C | 2% | 0.2 | 12.0h | 9.1/10 |
| 🌤️ September | 18°C | 24°C | 4% | 0.5 | 11.3h | 8.8/10 |
| 🌤️ October | 15°C | 23°C | 7% | 0.4 | 10.8h | 8.5/10 |
| 🌤️ November | 12°C | 21°C | 11% | 1.2 | 9.8h | 7.9/10 |
| 🌤️ December | 9°C | 18°C | 16% | 1.8 | 9.5h | 7.3/10 |
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, San Diego averages 20°C, 10% rainy days and 11.7h of sunshine per day. Overall weather score: 8.0/10.
See methodology →
Comparison
May vs July (best month)
The best month is July (score 9.1/10). Difference:
- 🌡️ Max temperature : +4°C
- 🌧 Rainy days : -10%
- ☀️ Sunshine : +0.8h/day
FAQ
FAQ — San Diego in May
Is May a good time to visit San Diego?
May is an excellent time to visit San Diego (score 8.0/10). With 20°C, 11.7h of sunshine and 10% rain, conditions are very favourable.
What to do in San Diego in May?
With 20°C and 11.7h of sunshine, all outdoor activities are possible: hiking, sightseeing and terraces.
Accommodation
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Activities & tours
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