Preparing your outing in the Chablais
Check the weather before you go. :Local weather with Chamonix Météo by telephone on 08 99 71 02 74 (voice weather report) or on the website + the excellent Swiss Weather app Find out about roadworks in progress. These are usually carried out in spring or autumn, and some passes may be closed or difficult to negotiate, particularly on the way down. For more information: 04 50 66 10 74 or visit our website Some high-altitude passes close in winter. Click here to find out when these passes are open.