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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Public Journal weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above for San Diego’s current conditions, then plan ahead – the city enjoys a mild Mediterranean climate with warm, dry summers and cooler, wetter winters, thanks to its position on the southern California coast.
What is the typical climate of San Diego?
San Diego’s weather is defined by its coastal setting, with the Pacific Ocean moderating temperatures year-round. Summers are generally warm and sunny, with average highs around 24°C (75°F) in August, while winters are mild, with December highs near 19°C (66°F). Rainfall is sparse, most falling between November and March, and the region experiences around 260 sunny days per year. For a month-by-month breakdown of san diego weather by month, the live forecast above gives a reliable snapshot of current trends.
How does San Diego’s weather compare with the UK?
Unlike the UK’s changeable conditions, San Diego offers far more consistency. Where British summers can be unpredictable, San Diego’s summer heat is dry and stable, with very little rain. Winters are also significantly milder than even southern England, with no frost or snow. If you’re checking weather in san diego 10 days ahead, the forecast above will show steady temperatures, usually well above UK averages. For a 14-day outlook, see weather in san diego 14 days in the live forecast. Temperatures are measured in fahrenheit locally, but the live forecast above provides celsius equivalents too – so you can easily compare san diego weather fahrenheit or san diego weather in celsius.
Does San Diego ever get cold?
Cold by San Diego standards means overnight lows of 7–10°C (45–50°F) in winter. Frost is extremely rare, and snow is almost unheard of in the city itself, though nearby mountains may see some.
When is the rainy season in San Diego?
Rainfall is concentrated from November through March, with January and February usually the wettest months. The rest of the year is mostly dry, with little precipitation from May to September.
How does the marine layer affect San Diego weather?
A low cloud layer known as “May Gray” or “June Gloom” often blankets the coast in late spring, burning off by midday. This can keep temperatures cooler than inland areas, especially during spring and early summer.
Sources
For more UK-focused forecasts, see our UK weather hub or check the 10 Day Weather Forecast UK. Also visit Bristol Weather for local updates.