San Diego Weather in May: A Detailed Overview

San Diego weather in May is mild and pleasant, with average temperatures ranging from 61°F to 69°F (16°C to 21°C). Expect some morning clouds (‘May Gray’) clearing to sunny afternoons. Rainfall is minimal, with only 0.12 inches on average.

Temperature:

• Average high: 69°F (21°C)
• Average low: 61°F (16°C)
• Record high: 93°F (34°C)
• Record low: 50°F (10°C)

Precipitation:

• Average rainfall: 0.12 inches (3 mm)
• Rain days: 2-3 days on average

Humidity:

• Morning average: 78%
• Afternoon average: 67%

Sunshine:

• Average sunshine hours: 8 hours per day
• Daylight hours: 13.5 hours

Water Temperature:

• Average ocean temperature: 64°F (18°C)

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San Diego Weather in May: What to Pack for

• Light layers (sweaters or light jackets for cooler evenings)
• Sunglasses and sunscreen
• Comfortable walking shoes
• Swimwear and beach essentials
• A light raincoat or umbrella (for possible drizzle)

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Best Outdoor Activities in San Diego During May:

1. Hiking in Torrey Pines State Natural Reserve
2. Visiting the San Diego Zoo or Safari Park
3. Exploring Balboa Park and its museums
4. Enjoying water sports like kayaking or paddleboarding
5. Attending outdoor events like the Gator By The Bay festival

Tips for Dealing with “May Gray”:

1. Plan flexible itineraries to adapt to changing weather
2. Visit inland areas for warmer, sunnier conditions
3. Take advantage of fewer crowds at popular attractions
4. Enjoy indoor activities during overcast mornings
5. Be prepared for beautiful, clear afternoons

Comparison to Other Months in San Diego:

• May is slightly cooler than June and July
• More stable weather compared to spring months (March-April)
• Less crowded than peak summer months
• Ocean temperatures are warming up but still cool

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