San Diego weather
Loading live data…Cloudy,rain likely tomorrow
NWS, the American and the European model put San Diego's high today between 82° and 94°, a 12° split. Tomorrow looks light drizzle around 89°, with a 39% chance of rain, and the models disagree, so treat it as uncertain.
The weather map: all three models at once
NWS, American, European side by side around San Diego and nearby towns.Live rain radar →Next 14 hours
consensus of the three models14-day forecast
where the models agree, and where they splitSan Diego, CA. Below we compare what NWS, American, European forecast for San Diego right now and flag exactly where they disagree, then break down San Diego's weather month by month and which forecast model has been most accurate here.
We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.
San Diego weather by month
what to expect in San Diego through the yearHere is San Diego's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to San Diego by season.
What San Diego's weather is like through the year
San Diego runs from warm summers, with August highs near 77°F, to cold winters, when January lows sit around 46°F (a swing of about 31°F across the year). January is usually the wettest month, and San Diego sees roughly 19 inches of precipitation annually.
Best time to visit San Diego
The most comfortable time to visit San Diego is usually February, March, April and May, when daytime highs sit in the pleasant 60-78°F range and the heaviest January rain is behind you.
Which forecast is most accurate in San Diego?
CheckWeather Score — graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.
Bottom line: over the last 30 days the American model has been the most accurate forecast for San Diego, scoring 88/100 on our CheckWeather Score, ahead of the European at 63. See the full US accuracy scoreboard for exactly how every model is tested.
Where the models disagree
temperature and rain, judged separatelyThe models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.