San Diego Weather Year Round — What to Expect

Overview

San Diego, USA — San Diego boasts some of the most consistently pleasant weather in the US — warm, sunny, and mild virtually every day of the year. Whether you are planning a holiday or a business trip, understanding the weather helps you pack right and make the most of your time.

Temperature

Daytime highs reach 22°C (72°F) while nights cool to 14°C (57°F). Expect around 10 hours of sunshine per day.

Rainfall

San Diego sees about 25mm of rainfall across 3 days during this period. Rain is uncommon, though a light sprinkle is not out of the question.

Humidity and Comfort

Average humidity sits at 65%. Most visitors find this comfortable, though midday can feel slightly muggy.

What to Pack

• Light layers — t-shirts plus a jacket for cooler evenings
• Sunscreen and sunglasses
• Comfortable walking shoes suited to the terrain

Best Things to Do

• Spend a day at Balboa Park exploring museums and gardens
• Relax at La Jolla Cove and watch the sea lions bask on the rocks
• Visit the world-famous San Diego Zoo
• Stroll the Gaslamp Quarter for craft breweries and rooftop dining

Travel Tips

• May Gray and June Gloom bring morning fog that clears by midday
• The San Diego Trolley connects the airport, downtown, and the border
• Craft beer is huge here — visit a few of the 150+ local breweries

Quick Summary

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Plan your trip with the live San Diego forecast on Weather Tomorrow.