Sonoma, USA

Sonoma sits along the Mediterranean in USA, and the 2015–2024 weather record gives its sunshine a clear shape: the June peak reaches a 100/100 sun score, with daytime highs around 28°C — a solid base for an outdoors-led escape.

August is the heat peak, averaging 30°C highs; December is the cool end, when nights dip to around 5°C. Rain is most likely in March, when about 36% of days see meaningful rainfall, and least likely in July (0%). If 24°C is your bar for proper warmth, count on June–October.

Averaged by season, sun scores land at 85 for spring, 100 for summer, 88 for autumn and 52 for winter — with typical afternoons of 20°, 29°, 24° and 15°C respectively. In short: plan around summer if you can, keep autumn as the fallback, and go into winter with managed expectations (its season score is 52). A practical compromise is June — the edge of the warm window, averaging 28°C with a 100 sun score.

Best months to visit Sonoma

Ranked purely on sunshine odds, the podium is June at 100/100, then July at 100 and August at 100. In practice you have flexibility — April–November all stay above a 70 sun score. Skip January if sunshine is the point — it bottoms out at 46/100.

For context: in June, Sonoma is drier than 92% of the mediterranean destinations we track.

Month-by-month breakdown for Sonoma → · More destinations for June →

The live forecast backs this up: of the next 16 days, 4 look mostly clear and none carry meaningful rain risk, in a 5–26°C band. Today's cached sun score is 91/100.