Weather in San Diego in May
San Diego, United States averages a high of 20.1°C (68.2°F) and low of 13.7°C (56.7°F) in May, with 2 rain days and 12.3 hours of daily sunshine. Travel score: 88/100 (Excellent). The best time to visit San Diego is July.
High
20°C68°F
Low
14°C57°F
🌧️
2
rain days
☀️
12.3
hrs/day sunshine
💧
75%
humidity
88— Excellent
May in San Diego is mild and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in San Diego?
How much does it rain in San Diego in May?
San Diego receives an average of 9.9mm of rainfall across 2 rainy days in May. The annual total is 290.5mm.
What should I pack for San Diego in May?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 20°C
🧴
Sunscreen SPF 30+
12 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to United States in May?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31