Is it cold in San Francisco at night during summer?

Yes, San Francisco summers are known for cold nights. Average low is 54°F (12°C) with strong winds making it feel colder.

  • "The coldest winter I ever spent was a summer in San Francisco" (attributed to Mark Twain)

  • Fog and wind chill are significant factors

  • Levi's Stadium (Santa Clara) is slightly warmer but still cool at night

  • Pack layers: t-shirt + long sleeve + fleece or light jacket

  • Late matches (8pm or later kickoff) are coldest, wear pants, not shorts

You may also like: Do I need a jacket for night matches in San Francisco?

Official resource: https://www.weather.gov (San Francisco climate data)

Traveling soon? See our Travel Essentials page.

🏆 FIFA World Cup 2026 Specific 🏆
⚠️ This answer applies to the FIFA World Cup 2026 (USA/Canada/Mexico, June 11 - July 19, 2026).

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