In July / August daytime temperatures usually range between 18 to 28 °C (65° - 82° F). It is always recommendable to bring a sweater, sunglasses, a compact umbrella and/or a light rain coat and to check current weather conditions and forecasts here
The voltage in Switzerland, as in most of Europe, is 220-230V/50 Hz. Switzerland uses type C CEE 7/16 (2-pin) and Type J SEV 1011 (3-pin) plugs. The standard continental type plug with two round pins, applied for many electrical travel products, may be used without problem.