San Diego, USA

There are 110 mediterranean destinations in our catalog, and San Diego's numbers hold their own: a 100/100 sun score at its June peak, when rain interrupts barely 1% of days. For a sand-and-sea holiday in the Mediterranean basin, the data is a good starting point.

The year runs from average lows of 9°C in January to highs of 26°C in August. Rain is most likely in March, when about 27% of days see meaningful rainfall, and least likely in July (1%). Beach-warm afternoons (24°C and up) hold through July–September.

Season by season (on the northern calendar), spring brings 19°C highs with 16% rain-day odds, summer 24°C at 1%, autumn 23°C at 7%, and winter 18°C at 18%. Summer wins on the numbers and winter loses them; everything in between is a trade-off between warmth and crowds. For warmth without the densest crowds, the shoulder play is July: still 25°C highs, with a sun score of 100.

Best months to visit San Diego

Ranked purely on sunshine odds, the podium is June at 100/100, then July at 100 and August at 99. The dependable window is wider than the podium, though: January–December all score 70 or better. At the other end, January scores just 74, the weakest month of the year.

For context: in June, San Diego is drier than 94% of the mediterranean destinations we track.

Month-by-month breakdown for San Diego → · More destinations for June →

The live forecast backs this up: of the next 16 days, 8 look mostly clear and one carries meaningful rain risk, in a 16–27°C band. Today's cached sun score is 89/100.