Today's Weather Forecast
On Tuesday, December 30, 2025, San Diego's weather is predominantly cloudy throughout the day. Daytime highs reach 70°F, while nighttime lows settle at 55°F, providing mild comfort.[1]
Precipitation chances are low at 2%, with winds blowing lightly at 4 mph from varying directions. The UV index peaks at 3, suggesting moderate sun protection for any breaks in the clouds.[1]
Compared to last year on this date, today's temperatures are slightly warmer than the 63°F high and 48°F low recorded in 2024, indicating a warming trend.[1]
December 2025 Overview
San Diego's December weather remains consistently mild, with average highs of 66°F and lows around 55°F on December 30 according to extended forecasts.[2] The month typically sees only 2 rainy days and 60mm total rainfall, favoring dry conditions.[2]
Forecast models show variability, with some sources predicting 63°F highs and others up to 74°F later in the month, but today's cloudy setup fits the seasonal norm.[3]
Air quality is currently good, supporting outdoor plans without health concerns from pollution.[1]
Impacts and Planning Tips
The cloudy weather today has minimal impacts on daily life, with no active watches or warnings from the National Weather Service.[5] Light winds pose no travel disruptions at San Diego International Airport or coastal areas.
For beachgoers or hikers, the 70°F daytime temperature is ideal, though evening chills to 55°F call for layers. Precipitation risk remains under 25%, reducing flood concerns.[1]
Looking ahead, expect similar mild patterns through New Year's, with partly cloudy skies and highs in the mid-60s°F.[2][3]